/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/watermelon.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:07:40,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:07:40,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:07:40,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:07:40,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:07:40,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:07:40,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:07:40,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:07:40,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:07:40,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:07:40,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:07:40,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:07:40,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:07:40,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:07:40,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:07:40,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:07:40,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:07:40,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:07:40,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:07:40,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:07:40,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:07:40,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:07:40,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:07:40,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:07:40,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:07:40,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:07:40,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:07:40,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:07:40,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:07:40,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:07:40,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:07:40,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:07:40,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:07:40,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:07:40,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:07:40,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:07:40,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:07:40,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:07:40,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:07:40,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:07:40,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:07:40,728 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 00:07:40,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:07:40,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:07:40,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:07:40,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:07:40,752 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:07:40,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:07:40,752 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:07:40,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:07:40,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:07:40,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:07:40,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:07:40,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:07:40,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:07:40,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:07:40,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:07:40,754 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:07:40,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:07:40,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:07:40,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:07:40,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:07:40,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:07:40,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:07:40,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:07:40,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:07:40,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:07:40,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:07:40,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:07:40,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:07:40,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:07:40,756 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 00:07:41,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:07:41,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:07:41,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:07:41,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:07:41,072 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:07:41,073 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/watermelon.c [2020-10-15 00:07:41,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3822f5803/a474f40c367b4ab98e60b89abc5ed762/FLAG016093b13 [2020-10-15 00:07:41,527 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:07:41,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/watermelon.c [2020-10-15 00:07:41,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3822f5803/a474f40c367b4ab98e60b89abc5ed762/FLAG016093b13 [2020-10-15 00:07:41,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3822f5803/a474f40c367b4ab98e60b89abc5ed762 [2020-10-15 00:07:41,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:07:41,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:07:41,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:07:41,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:07:41,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:07:42,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:07:41" (1/1) ... [2020-10-15 00:07:42,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed69f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:42, skipping insertion in model container [2020-10-15 00:07:42,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:07:41" (1/1) ... [2020-10-15 00:07:42,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:07:42,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:07:42,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:07:42,202 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:07:42,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:07:42,235 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:07:42,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:42 WrapperNode [2020-10-15 00:07:42,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:07:42,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:07:42,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:07:42,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:07:42,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:42" (1/1) ... [2020-10-15 00:07:42,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:42" (1/1) ... [2020-10-15 00:07:42,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:42" (1/1) ... [2020-10-15 00:07:42,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:42" (1/1) ... [2020-10-15 00:07:42,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:42" (1/1) ... [2020-10-15 00:07:42,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:42" (1/1) ... [2020-10-15 00:07:42,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:42" (1/1) ... [2020-10-15 00:07:42,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:07:42,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:07:42,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:07:42,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:07:42,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:42" (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 00:07:42,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:07:42,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:07:42,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 00:07:42,427 INFO L138 BoogieDeclarations]: Found implementation of procedure correct_version [2020-10-15 00:07:42,427 INFO L138 BoogieDeclarations]: Found implementation of procedure student_version [2020-10-15 00:07:42,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:07:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:07:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-15 00:07:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 00:07:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure correct_version [2020-10-15 00:07:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure student_version [2020-10-15 00:07:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:07:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:07:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:07:42,654 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:07:42,654 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-15 00:07:42,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:07:42 BoogieIcfgContainer [2020-10-15 00:07:42,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:07:42,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:07:42,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:07:42,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:07:42,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:07:41" (1/3) ... [2020-10-15 00:07:42,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612fbd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:07:42, skipping insertion in model container [2020-10-15 00:07:42,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:07:42" (2/3) ... [2020-10-15 00:07:42,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612fbd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:07:42, skipping insertion in model container [2020-10-15 00:07:42,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:07:42" (3/3) ... [2020-10-15 00:07:42,670 INFO L109 eAbstractionObserver]: Analyzing ICFG watermelon.c [2020-10-15 00:07:42,684 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:07:42,692 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:07:42,711 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:07:42,746 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:07:42,746 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:07:42,747 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:07:42,747 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:07:42,747 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:07:42,747 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:07:42,747 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:07:42,758 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:07:42,787 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-15 00:07:42,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 00:07:42,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:42,795 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] [2020-10-15 00:07:42,796 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:42,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:42,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2139742967, now seen corresponding path program 1 times [2020-10-15 00:07:42,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:42,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665366006] [2020-10-15 00:07:42,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:42,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:43,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:43,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:07:43,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:43,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-15 00:07:43,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:43,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:43,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:07:43,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 00:07:43,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:07:43,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 00:07:43,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:43,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:43,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:43,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:43,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:43,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:07:43,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:43,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:43,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:43,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:43,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:43,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 00:07:43,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:43,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 00:07:43,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:43,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:43,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:43,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 00:07:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:43,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:43,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:43,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 00:07:43,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:43,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 00:07:43,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:43,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:43,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:07:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:43,807 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 00:07:43,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665366006] [2020-10-15 00:07:43,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:07:43,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 00:07:43,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656031290] [2020-10-15 00:07:43,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:07:43,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:43,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:07:43,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:07:43,835 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 13 states. [2020-10-15 00:07:44,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:44,542 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2020-10-15 00:07:44,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:07:44,544 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-15 00:07:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:44,556 INFO L225 Difference]: With dead ends: 91 [2020-10-15 00:07:44,557 INFO L226 Difference]: Without dead ends: 42 [2020-10-15 00:07:44,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:07:44,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-15 00:07:44,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-15 00:07:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-15 00:07:44,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-15 00:07:44,612 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 25 [2020-10-15 00:07:44,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:44,613 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-15 00:07:44,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:07:44,613 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-15 00:07:44,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 00:07:44,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:44,616 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] [2020-10-15 00:07:44,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:07:44,617 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:44,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:44,617 INFO L82 PathProgramCache]: Analyzing trace with hash -951333161, now seen corresponding path program 1 times [2020-10-15 00:07:44,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:44,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640225427] [2020-10-15 00:07:44,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:44,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:44,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:44,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:44,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:44,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-15 00:07:44,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:07:44,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-15 00:07:44,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:44,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:07:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:07:44,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:07:44,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:44,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:44,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:44,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:44,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:44,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:07:44,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:44,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:44,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:44,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:44,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:44,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:44,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 00:07:44,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 00:07:44,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:44,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:07:44,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:44,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 00:07:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:44,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:44,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:44,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:44,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:44,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 00:07:44,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:07:44,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 00:07:44,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:44,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:07:44,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:44,965 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 00:07:44,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640225427] [2020-10-15 00:07:44,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:07:44,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:07:44,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242450333] [2020-10-15 00:07:44,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:07:44,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:44,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:07:44,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:07:44,969 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 8 states. [2020-10-15 00:07:45,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:45,191 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-10-15 00:07:45,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:07:45,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-15 00:07:45,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:45,194 INFO L225 Difference]: With dead ends: 54 [2020-10-15 00:07:45,194 INFO L226 Difference]: Without dead ends: 43 [2020-10-15 00:07:45,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:07:45,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-15 00:07:45,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-10-15 00:07:45,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-15 00:07:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-15 00:07:45,206 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 27 [2020-10-15 00:07:45,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:45,206 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-15 00:07:45,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:07:45,206 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-15 00:07:45,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 00:07:45,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:45,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:45,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:07:45,208 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:45,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:45,209 INFO L82 PathProgramCache]: Analyzing trace with hash 438513435, now seen corresponding path program 1 times [2020-10-15 00:07:45,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:45,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091975552] [2020-10-15 00:07:45,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:45,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:45,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-15 00:07:45,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:07:45,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-15 00:07:45,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:45,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:45,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:07:45,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:07:45,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:45,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:45,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:45,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:45,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:45,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:45,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:07:45,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:45,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:45,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:45,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:45,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:45,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 00:07:45,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:07:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-15 00:07:45,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:45,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:07:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:45,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 00:07:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:45,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:45,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 00:07:45,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:45,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 00:07:45,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:45,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:45,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:45,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:45,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:07:45,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:45,480 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 00:07:45,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091975552] [2020-10-15 00:07:45,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:07:45,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:07:45,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023611165] [2020-10-15 00:07:45,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:07:45,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:45,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:07:45,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:07:45,483 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 8 states. [2020-10-15 00:07:45,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:45,666 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-10-15 00:07:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:07:45,667 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-15 00:07:45,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:45,668 INFO L225 Difference]: With dead ends: 49 [2020-10-15 00:07:45,668 INFO L226 Difference]: Without dead ends: 40 [2020-10-15 00:07:45,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:07:45,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-15 00:07:45,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-15 00:07:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-15 00:07:45,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-15 00:07:45,678 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 27 [2020-10-15 00:07:45,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:45,678 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-15 00:07:45,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:07:45,679 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-15 00:07:45,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 00:07:45,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:45,680 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] [2020-10-15 00:07:45,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:07:45,680 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:45,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:45,681 INFO L82 PathProgramCache]: Analyzing trace with hash 551084075, now seen corresponding path program 1 times [2020-10-15 00:07:45,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:45,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310300812] [2020-10-15 00:07:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:45,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:45,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 00:07:45,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:07:45,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-15 00:07:45,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:45,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-15 00:07:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:07:45,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:45,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:45,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:45,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:45,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:45,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:45,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:45,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:45,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:45,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:45,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:45,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:45,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:45,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:45,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 00:07:45,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:45,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:07:45,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:45,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:07:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:45,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 00:07:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:45,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:45,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 00:07:45,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:45,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 00:07:45,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:45,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:45,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:45,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:07:45,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:07:45,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:45,848 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 00:07:45,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310300812] [2020-10-15 00:07:45,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:07:45,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:07:45,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315482804] [2020-10-15 00:07:45,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:07:45,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:45,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:07:45,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:07:45,851 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 5 states. [2020-10-15 00:07:45,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:45,953 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-10-15 00:07:45,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:07:45,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-15 00:07:45,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:45,955 INFO L225 Difference]: With dead ends: 72 [2020-10-15 00:07:45,955 INFO L226 Difference]: Without dead ends: 44 [2020-10-15 00:07:45,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:07:45,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-15 00:07:45,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-15 00:07:45,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-15 00:07:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-15 00:07:45,964 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 29 [2020-10-15 00:07:45,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:45,964 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-15 00:07:45,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:07:45,965 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-15 00:07:45,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-15 00:07:45,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:45,966 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 00:07:45,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:07:45,966 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:45,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:45,967 INFO L82 PathProgramCache]: Analyzing trace with hash 938493323, now seen corresponding path program 1 times [2020-10-15 00:07:45,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:45,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333467830] [2020-10-15 00:07:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:45,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:45,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-15 00:07:46,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:07:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-15 00:07:46,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:07:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 00:07:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 00:07:46,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:46,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:46,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:46,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:46,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:46,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:07:46,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:46,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 00:07:46,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:07:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:07:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 00:07:46,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:46,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:07:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:07:46,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:46,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 00:07:46,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:07:46,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:07:46,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:07:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:46,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333467830] [2020-10-15 00:07:46,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:46,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:07:46,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519934546] [2020-10-15 00:07:46,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:07:46,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:46,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:07:46,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:07:46,313 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 7 states. [2020-10-15 00:07:46,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:46,474 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2020-10-15 00:07:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:07:46,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-15 00:07:46,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:46,476 INFO L225 Difference]: With dead ends: 77 [2020-10-15 00:07:46,476 INFO L226 Difference]: Without dead ends: 48 [2020-10-15 00:07:46,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:07:46,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-15 00:07:46,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-15 00:07:46,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-15 00:07:46,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-15 00:07:46,485 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 33 [2020-10-15 00:07:46,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:46,485 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-15 00:07:46,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:07:46,485 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-15 00:07:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-15 00:07:46,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:46,487 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] [2020-10-15 00:07:46,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:07:46,487 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:46,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:46,488 INFO L82 PathProgramCache]: Analyzing trace with hash -645254165, now seen corresponding path program 2 times [2020-10-15 00:07:46,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:46,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134836548] [2020-10-15 00:07:46,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 00:07:46,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:07:46,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-15 00:07:46,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:07:46,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:07:46,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:07:46,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:46,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:46,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:46,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:46,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:46,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:46,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:46,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:46,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:46,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 00:07:46,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:46,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:46,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:07:46,823 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 20 [2020-10-15 00:07:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:46,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:46,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-15 00:07:46,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:46,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:46,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:07:46,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:47,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134836548] [2020-10-15 00:07:47,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:47,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 00:07:47,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896374189] [2020-10-15 00:07:47,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:07:47,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:47,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:07:47,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:07:47,052 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 14 states. [2020-10-15 00:07:47,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:47,485 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-10-15 00:07:47,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:07:47,486 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-10-15 00:07:47,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:47,489 INFO L225 Difference]: With dead ends: 72 [2020-10-15 00:07:47,489 INFO L226 Difference]: Without dead ends: 66 [2020-10-15 00:07:47,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:07:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-15 00:07:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-10-15 00:07:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-15 00:07:47,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-10-15 00:07:47,502 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 37 [2020-10-15 00:07:47,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:47,502 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-10-15 00:07:47,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:07:47,503 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-10-15 00:07:47,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-15 00:07:47,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:47,504 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] [2020-10-15 00:07:47,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:07:47,505 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:47,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:47,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1106457817, now seen corresponding path program 1 times [2020-10-15 00:07:47,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:47,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670593899] [2020-10-15 00:07:47,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:47,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:47,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 00:07:47,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:07:47,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-15 00:07:47,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:47,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:07:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:07:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:07:47,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:47,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:47,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:47,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:47,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:47,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:47,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:47,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:47,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:47,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 00:07:47,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:47,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:07:47,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:47,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:07:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:47,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:48,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:48,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:48,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:48,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-15 00:07:48,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:48,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:07:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:07:48,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:48,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:48,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670593899] [2020-10-15 00:07:48,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:48,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 00:07:48,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038116261] [2020-10-15 00:07:48,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:07:48,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:48,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:07:48,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:07:48,183 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 14 states. [2020-10-15 00:07:48,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:48,638 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-15 00:07:48,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:07:48,638 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-10-15 00:07:48,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:48,640 INFO L225 Difference]: With dead ends: 77 [2020-10-15 00:07:48,641 INFO L226 Difference]: Without dead ends: 63 [2020-10-15 00:07:48,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:07:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-15 00:07:48,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2020-10-15 00:07:48,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-15 00:07:48,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-15 00:07:48,657 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 37 [2020-10-15 00:07:48,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:48,657 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-15 00:07:48,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:07:48,658 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-15 00:07:48,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-15 00:07:48,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:48,659 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] [2020-10-15 00:07:48,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:07:48,659 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:48,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:48,660 INFO L82 PathProgramCache]: Analyzing trace with hash -426399447, now seen corresponding path program 1 times [2020-10-15 00:07:48,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:48,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995379578] [2020-10-15 00:07:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:48,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:48,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:48,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 00:07:48,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:48,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-15 00:07:48,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:48,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:48,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:07:48,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 00:07:48,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:07:48,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:48,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:48,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:48,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:48,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:48,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:48,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:48,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:48,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:48,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:48,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:48,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:48,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:48,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 00:07:48,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:48,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:07:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:07:48,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:07:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:48,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:48,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:48,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:07:48,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:48,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 00:07:48,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:48,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:07:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:07:48,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 00:07:49,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995379578] [2020-10-15 00:07:49,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:07:49,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 00:07:49,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746462353] [2020-10-15 00:07:49,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:07:49,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:49,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:07:49,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:07:49,008 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 13 states. [2020-10-15 00:07:49,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:49,402 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-10-15 00:07:49,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:07:49,402 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-15 00:07:49,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:49,403 INFO L225 Difference]: With dead ends: 68 [2020-10-15 00:07:49,404 INFO L226 Difference]: Without dead ends: 52 [2020-10-15 00:07:49,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:07:49,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-15 00:07:49,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-15 00:07:49,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-15 00:07:49,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-10-15 00:07:49,411 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 37 [2020-10-15 00:07:49,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:49,412 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-10-15 00:07:49,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:07:49,412 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-10-15 00:07:49,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 00:07:49,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:49,413 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] [2020-10-15 00:07:49,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:07:49,414 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:49,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:49,414 INFO L82 PathProgramCache]: Analyzing trace with hash -217060533, now seen corresponding path program 3 times [2020-10-15 00:07:49,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:49,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910433251] [2020-10-15 00:07:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:49,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:49,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:49,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 00:07:49,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:49,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-15 00:07:49,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:49,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:07:49,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:07:49,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:07:49,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:49,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:49,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:49,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:49,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:49,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:49,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:49,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:49,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:49,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:49,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:49,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:49,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:49,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:49,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:49,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:49,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 00:07:49,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:49,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:49,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:49,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:49,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:07:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:49,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:49,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:49,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:49,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 00:07:49,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:49,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:49,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:49,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:49,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:49,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:49,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910433251] [2020-10-15 00:07:49,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:49,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 00:07:49,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723083586] [2020-10-15 00:07:49,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:07:49,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:49,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:07:49,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:07:49,886 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 16 states. [2020-10-15 00:07:50,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:50,389 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-15 00:07:50,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:07:50,389 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-15 00:07:50,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:50,391 INFO L225 Difference]: With dead ends: 80 [2020-10-15 00:07:50,391 INFO L226 Difference]: Without dead ends: 71 [2020-10-15 00:07:50,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:07:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-15 00:07:50,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2020-10-15 00:07:50,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-15 00:07:50,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-15 00:07:50,400 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 41 [2020-10-15 00:07:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:50,401 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-15 00:07:50,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:07:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-15 00:07:50,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 00:07:50,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:50,402 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] [2020-10-15 00:07:50,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:07:50,402 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:50,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:50,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1031132409, now seen corresponding path program 2 times [2020-10-15 00:07:50,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:50,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872670305] [2020-10-15 00:07:50,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:50,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:50,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 00:07:50,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:50,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-15 00:07:50,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:50,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:07:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:07:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:07:50,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:50,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:50,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:50,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:50,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:50,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:50,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:50,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:50,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:50,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:50,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:50,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:50,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:50,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 00:07:50,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:50,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:50,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:50,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:07:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:50,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:50,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:50,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:50,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 00:07:50,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:50,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:50,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:50,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872670305] [2020-10-15 00:07:50,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:50,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 00:07:50,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591884814] [2020-10-15 00:07:50,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:07:50,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:50,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:07:50,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:07:50,887 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 16 states. [2020-10-15 00:07:51,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:51,458 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-10-15 00:07:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:07:51,458 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-15 00:07:51,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:51,459 INFO L225 Difference]: With dead ends: 75 [2020-10-15 00:07:51,459 INFO L226 Difference]: Without dead ends: 64 [2020-10-15 00:07:51,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:07:51,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-15 00:07:51,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2020-10-15 00:07:51,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-15 00:07:51,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-10-15 00:07:51,468 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 41 [2020-10-15 00:07:51,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:51,468 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-10-15 00:07:51,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:07:51,469 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-10-15 00:07:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 00:07:51,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:51,469 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] [2020-10-15 00:07:51,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:07:51,470 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:51,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:51,470 INFO L82 PathProgramCache]: Analyzing trace with hash 958358477, now seen corresponding path program 4 times [2020-10-15 00:07:51,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:51,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793855862] [2020-10-15 00:07:51,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:51,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:51,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:51,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 00:07:51,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:51,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-15 00:07:51,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:51,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:07:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:07:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:07:51,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:51,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:51,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:51,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:51,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:51,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:51,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:07:51,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:51,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:51,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:51,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:51,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:51,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:51,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:51,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:51,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:51,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:51,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 00:07:51,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:51,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:07:51,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:51,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:07:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:51,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:51,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:51,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:51,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:51,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:51,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-15 00:07:51,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:51,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:51,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:51,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:51,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:51,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:52,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793855862] [2020-10-15 00:07:52,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:52,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 00:07:52,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001022152] [2020-10-15 00:07:52,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:07:52,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:52,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:07:52,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:07:52,059 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 16 states. [2020-10-15 00:07:52,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:52,539 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2020-10-15 00:07:52,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:07:52,540 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-10-15 00:07:52,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:52,541 INFO L225 Difference]: With dead ends: 71 [2020-10-15 00:07:52,541 INFO L226 Difference]: Without dead ends: 59 [2020-10-15 00:07:52,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:07:52,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-15 00:07:52,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2020-10-15 00:07:52,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-15 00:07:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-15 00:07:52,548 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 43 [2020-10-15 00:07:52,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:52,549 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-15 00:07:52,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:07:52,549 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-15 00:07:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 00:07:52,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:52,550 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] [2020-10-15 00:07:52,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:07:52,550 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:52,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:52,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1450061211, now seen corresponding path program 3 times [2020-10-15 00:07:52,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:52,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446321278] [2020-10-15 00:07:52,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:52,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:52,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:52,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:52,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 00:07:52,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:52,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-15 00:07:52,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:52,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:07:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:07:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:07:52,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:52,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:52,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:52,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:52,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:52,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:52,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:52,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:52,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:52,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:52,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:52,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:52,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:52,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:52,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:52,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-15 00:07:52,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:52,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:52,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:52,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:52,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:52,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:52,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:07:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:52,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:07:53,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 00:07:53,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:07:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:07:53,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:53,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446321278] [2020-10-15 00:07:53,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:53,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 00:07:53,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759143514] [2020-10-15 00:07:53,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:07:53,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:53,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:07:53,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:07:53,103 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 16 states. [2020-10-15 00:07:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:53,457 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-10-15 00:07:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:07:53,458 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-10-15 00:07:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:53,459 INFO L225 Difference]: With dead ends: 65 [2020-10-15 00:07:53,459 INFO L226 Difference]: Without dead ends: 55 [2020-10-15 00:07:53,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:07:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-15 00:07:53,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-15 00:07:53,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-15 00:07:53,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-15 00:07:53,469 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 43 [2020-10-15 00:07:53,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:53,469 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-15 00:07:53,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:07:53,469 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-15 00:07:53,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 00:07:53,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:53,470 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] [2020-10-15 00:07:53,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:07:53,471 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:53,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:53,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2094705579, now seen corresponding path program 5 times [2020-10-15 00:07:53,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:53,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660446118] [2020-10-15 00:07:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 00:07:53,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-15 00:07:53,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:07:53,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:07:53,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:07:53,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:53,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:53,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:53,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:53,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:53,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:53,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:53,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:53,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 00:07:53,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:53,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:53,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:07:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:53,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-15 00:07:53,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:53,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:53,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:53,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:54,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660446118] [2020-10-15 00:07:54,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:54,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 00:07:54,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768454012] [2020-10-15 00:07:54,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:07:54,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:54,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:07:54,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:07:54,040 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 18 states. [2020-10-15 00:07:54,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:54,639 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2020-10-15 00:07:54,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:07:54,640 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2020-10-15 00:07:54,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:54,642 INFO L225 Difference]: With dead ends: 84 [2020-10-15 00:07:54,642 INFO L226 Difference]: Without dead ends: 75 [2020-10-15 00:07:54,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:07:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-15 00:07:54,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 57. [2020-10-15 00:07:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-15 00:07:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-15 00:07:54,651 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 45 [2020-10-15 00:07:54,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:54,651 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-15 00:07:54,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:07:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-15 00:07:54,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 00:07:54,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:54,652 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] [2020-10-15 00:07:54,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 00:07:54,652 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:54,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:54,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1476686823, now seen corresponding path program 4 times [2020-10-15 00:07:54,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:54,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880133187] [2020-10-15 00:07:54,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:54,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:54,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:54,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 00:07:54,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:54,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-15 00:07:54,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:54,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:54,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:07:54,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:07:54,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:07:54,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:54,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:54,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:54,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:54,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:54,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:54,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:54,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:54,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:54,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:54,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:54,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:54,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:54,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:54,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:54,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 00:07:54,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:54,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:54,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:54,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:54,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:55,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:07:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:55,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:55,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:55,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:55,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:55,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 00:07:55,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:55,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:55,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:55,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:55,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:55,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:55,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880133187] [2020-10-15 00:07:55,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:55,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 00:07:55,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563664947] [2020-10-15 00:07:55,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:07:55,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:55,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:07:55,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:07:55,182 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 18 states. [2020-10-15 00:07:55,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:55,675 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2020-10-15 00:07:55,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:07:55,676 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2020-10-15 00:07:55,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:55,676 INFO L225 Difference]: With dead ends: 79 [2020-10-15 00:07:55,677 INFO L226 Difference]: Without dead ends: 68 [2020-10-15 00:07:55,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:07:55,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-15 00:07:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-10-15 00:07:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-15 00:07:55,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-10-15 00:07:55,686 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 45 [2020-10-15 00:07:55,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:55,686 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-10-15 00:07:55,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:07:55,687 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-10-15 00:07:55,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 00:07:55,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:55,687 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] [2020-10-15 00:07:55,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 00:07:55,688 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:55,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:55,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2067500077, now seen corresponding path program 6 times [2020-10-15 00:07:55,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:55,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016869052] [2020-10-15 00:07:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:55,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:55,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:56,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:56,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:07:56,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:56,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-15 00:07:56,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:56,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:07:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:07:56,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:07:56,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:56,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:56,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:56,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:56,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:56,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:56,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:56,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:56,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:56,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:56,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:56,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:56,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:56,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:56,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:56,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:56,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:56,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:56,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-15 00:07:56,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:56,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:07:56,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:56,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:07:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:56,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:56,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:56,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:56,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:07:56,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-15 00:07:56,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:56,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:07:56,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:56,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016869052] [2020-10-15 00:07:56,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:56,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 00:07:56,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129011387] [2020-10-15 00:07:56,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:07:56,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:56,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:07:56,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:07:56,381 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 18 states. [2020-10-15 00:07:56,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:56,870 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-15 00:07:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 00:07:56,871 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 47 [2020-10-15 00:07:56,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:56,872 INFO L225 Difference]: With dead ends: 75 [2020-10-15 00:07:56,872 INFO L226 Difference]: Without dead ends: 63 [2020-10-15 00:07:56,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:07:56,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-15 00:07:56,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-10-15 00:07:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-15 00:07:56,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-15 00:07:56,883 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 47 [2020-10-15 00:07:56,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:56,885 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-15 00:07:56,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:07:56,885 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-15 00:07:56,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 00:07:56,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:56,886 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] [2020-10-15 00:07:56,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 00:07:56,886 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:56,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:56,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1710408635, now seen corresponding path program 5 times [2020-10-15 00:07:56,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:56,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166439759] [2020-10-15 00:07:56,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:56,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:56,932 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: 59 [2020-10-15 00:07:57,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-15 00:07:57,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:57,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:07:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:07:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:07:57,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:57,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:57,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:57,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:57,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:57,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:57,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:57,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:57,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:57,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:57,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:57,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:57,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:57,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:07:57,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:07:57,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-15 00:07:57,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:57,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:57,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:07:57,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:57,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:07:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:57,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:57,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:57,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:07:57,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:57,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 00:07:57,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:57,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:57,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:07:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:07:57,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:57,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166439759] [2020-10-15 00:07:57,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:57,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 00:07:57,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082163455] [2020-10-15 00:07:57,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:07:57,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:57,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:07:57,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:07:57,722 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 18 states. [2020-10-15 00:07:58,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:58,227 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2020-10-15 00:07:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 00:07:58,227 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 47 [2020-10-15 00:07:58,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:58,228 INFO L225 Difference]: With dead ends: 69 [2020-10-15 00:07:58,228 INFO L226 Difference]: Without dead ends: 59 [2020-10-15 00:07:58,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:07:58,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-15 00:07:58,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-15 00:07:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-15 00:07:58,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-10-15 00:07:58,240 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 47 [2020-10-15 00:07:58,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:58,241 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-10-15 00:07:58,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:07:58,241 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-10-15 00:07:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 00:07:58,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:58,242 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] [2020-10-15 00:07:58,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 00:07:58,242 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:58,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:58,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1580446987, now seen corresponding path program 7 times [2020-10-15 00:07:58,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:58,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123364208] [2020-10-15 00:07:58,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:58,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:58,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 00:07:58,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:58,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-15 00:07:58,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:58,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:07:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:07:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:07:58,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:58,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:58,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:58,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:58,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:58,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:58,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:58,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:58,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:58,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:58,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:58,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:58,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:07:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:58,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:58,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:07:58,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:58,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-15 00:07:58,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:58,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:07:58,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:07:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:58,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:58,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:07:58,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:58,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 00:07:58,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:58,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:58,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:07:58,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:07:58,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:07:58,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:58,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123364208] [2020-10-15 00:07:58,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:58,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 00:07:58,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217212269] [2020-10-15 00:07:58,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:07:58,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:58,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:07:58,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:07:58,938 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 20 states. [2020-10-15 00:07:59,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:59,885 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-10-15 00:07:59,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:07:59,886 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 49 [2020-10-15 00:07:59,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:59,887 INFO L225 Difference]: With dead ends: 88 [2020-10-15 00:07:59,887 INFO L226 Difference]: Without dead ends: 79 [2020-10-15 00:07:59,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:07:59,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-15 00:07:59,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 61. [2020-10-15 00:07:59,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-15 00:07:59,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-15 00:07:59,897 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 49 [2020-10-15 00:07:59,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:59,897 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-15 00:07:59,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:07:59,898 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-15 00:07:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 00:07:59,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:59,898 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] [2020-10-15 00:07:59,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 00:07:59,899 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:59,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:59,899 INFO L82 PathProgramCache]: Analyzing trace with hash 390915527, now seen corresponding path program 6 times [2020-10-15 00:07:59,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:59,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632571651] [2020-10-15 00:07:59,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:00,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:00,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 00:08:00,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:00,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-15 00:08:00,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:00,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:08:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:08:00,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:00,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:00,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:00,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:00,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:00,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:00,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:00,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:00,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:00,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:00,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:00,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:00,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:00,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:00,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:00,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-15 00:08:00,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:00,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:08:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:00,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:08:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:00,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:00,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:00,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:00,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:00,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 00:08:00,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:00,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:00,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:08:00,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:00,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:08:00,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:00,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632571651] [2020-10-15 00:08:00,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:00,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 00:08:00,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275427919] [2020-10-15 00:08:00,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:08:00,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:00,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:08:00,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:08:00,593 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 20 states. [2020-10-15 00:08:01,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:01,573 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-10-15 00:08:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:08:01,574 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 49 [2020-10-15 00:08:01,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:01,575 INFO L225 Difference]: With dead ends: 83 [2020-10-15 00:08:01,575 INFO L226 Difference]: Without dead ends: 72 [2020-10-15 00:08:01,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:08:01,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-15 00:08:01,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2020-10-15 00:08:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-15 00:08:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2020-10-15 00:08:01,584 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 49 [2020-10-15 00:08:01,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:01,584 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2020-10-15 00:08:01,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:08:01,584 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2020-10-15 00:08:01,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:08:01,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:01,585 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] [2020-10-15 00:08:01,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 00:08:01,585 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:01,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:01,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1786232205, now seen corresponding path program 8 times [2020-10-15 00:08:01,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:01,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019534768] [2020-10-15 00:08:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:01,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:01,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:01,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:01,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 00:08:01,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:01,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-15 00:08:01,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:01,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:08:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:08:01,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:02,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:02,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:02,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:02,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:02,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:02,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:08:02,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:02,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:02,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:02,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:02,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:02,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:02,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:02,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:02,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:02,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:02,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:02,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-15 00:08:02,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:02,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:02,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:08:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:02,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:02,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:08:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:02,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:02,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:02,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:02,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:02,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:02,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-15 00:08:02,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:02,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:08:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:02,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019534768] [2020-10-15 00:08:02,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:02,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 00:08:02,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748003244] [2020-10-15 00:08:02,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:08:02,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:02,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:08:02,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:08:02,416 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand 20 states. [2020-10-15 00:08:02,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:02,897 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2020-10-15 00:08:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:08:02,901 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2020-10-15 00:08:02,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:02,902 INFO L225 Difference]: With dead ends: 79 [2020-10-15 00:08:02,902 INFO L226 Difference]: Without dead ends: 67 [2020-10-15 00:08:02,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=249, Invalid=1083, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 00:08:02,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-15 00:08:02,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-10-15 00:08:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-15 00:08:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-15 00:08:02,910 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 51 [2020-10-15 00:08:02,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:02,911 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-15 00:08:02,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:08:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-15 00:08:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:08:02,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:02,912 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] [2020-10-15 00:08:02,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 00:08:02,912 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:02,912 INFO L82 PathProgramCache]: Analyzing trace with hash 484331301, now seen corresponding path program 7 times [2020-10-15 00:08:02,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:02,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77721976] [2020-10-15 00:08:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:02,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:02,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:03,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:03,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 00:08:03,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:03,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-15 00:08:03,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:03,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:08:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:08:03,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:03,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:03,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:03,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:03,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:03,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:03,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:03,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:03,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:03,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:03,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:03,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:03,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:03,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:03,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:03,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:03,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:03,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:03,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-15 00:08:03,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:03,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:03,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:08:03,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:08:03,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:03,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:08:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:03,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:03,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:03,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 00:08:03,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:03,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 00:08:03,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:03,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:08:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:03,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:08:03,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:03,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77721976] [2020-10-15 00:08:03,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:03,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 00:08:03,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080541442] [2020-10-15 00:08:03,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:08:03,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:03,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:08:03,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:08:03,652 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 20 states. [2020-10-15 00:08:04,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:04,161 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-10-15 00:08:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:08:04,161 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2020-10-15 00:08:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:04,162 INFO L225 Difference]: With dead ends: 73 [2020-10-15 00:08:04,162 INFO L226 Difference]: Without dead ends: 63 [2020-10-15 00:08:04,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=249, Invalid=1083, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 00:08:04,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-15 00:08:04,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-10-15 00:08:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-15 00:08:04,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-10-15 00:08:04,176 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 51 [2020-10-15 00:08:04,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:04,177 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-10-15 00:08:04,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:08:04,177 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-10-15 00:08:04,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 00:08:04,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:04,178 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] [2020-10-15 00:08:04,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 00:08:04,178 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:04,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:04,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1364477803, now seen corresponding path program 9 times [2020-10-15 00:08:04,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:04,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616268412] [2020-10-15 00:08:04,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:04,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:04,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 00:08:04,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:04,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-15 00:08:04,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:04,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:04,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:08:04,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:04,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 00:08:04,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:04,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:04,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:04,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:04,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:04,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:04,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:04,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:04,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:04,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:04,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:04,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:04,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:04,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:04,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 00:08:04,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:04,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:04,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:04,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:08:04,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:04,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:08:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:04,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:04,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:04,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:04,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 00:08:04,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:04,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:04,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:04,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616268412] [2020-10-15 00:08:04,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:04,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 00:08:04,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844817369] [2020-10-15 00:08:04,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 00:08:04,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:04,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 00:08:04,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:08:04,827 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 22 states. [2020-10-15 00:08:05,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:05,780 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2020-10-15 00:08:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:08:05,780 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 53 [2020-10-15 00:08:05,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:05,781 INFO L225 Difference]: With dead ends: 92 [2020-10-15 00:08:05,781 INFO L226 Difference]: Without dead ends: 83 [2020-10-15 00:08:05,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=1548, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:08:05,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-15 00:08:05,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 65. [2020-10-15 00:08:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-15 00:08:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-15 00:08:05,792 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 53 [2020-10-15 00:08:05,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:05,792 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-15 00:08:05,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 00:08:05,793 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-15 00:08:05,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 00:08:05,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:05,793 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] [2020-10-15 00:08:05,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 00:08:05,794 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:05,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:05,794 INFO L82 PathProgramCache]: Analyzing trace with hash 707051687, now seen corresponding path program 8 times [2020-10-15 00:08:05,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:05,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319567546] [2020-10-15 00:08:05,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:05,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:05,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:05,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 00:08:05,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:05,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-15 00:08:05,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:05,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:05,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:08:05,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:05,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 00:08:05,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:06,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:06,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:06,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:06,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:06,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:06,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:06,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:06,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:06,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:06,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:06,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:06,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:06,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 00:08:06,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:06,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:06,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:08:06,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:08:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:06,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:06,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:06,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:06,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:06,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 00:08:06,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:06,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:06,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:06,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:06,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:06,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,398 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:06,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319567546] [2020-10-15 00:08:06,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:06,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 00:08:06,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071127700] [2020-10-15 00:08:06,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 00:08:06,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:06,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 00:08:06,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:08:06,400 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 22 states. [2020-10-15 00:08:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:07,259 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2020-10-15 00:08:07,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:08:07,260 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 53 [2020-10-15 00:08:07,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:07,261 INFO L225 Difference]: With dead ends: 87 [2020-10-15 00:08:07,261 INFO L226 Difference]: Without dead ends: 76 [2020-10-15 00:08:07,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=1548, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:08:07,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-15 00:08:07,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2020-10-15 00:08:07,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-15 00:08:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2020-10-15 00:08:07,271 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 53 [2020-10-15 00:08:07,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:07,271 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2020-10-15 00:08:07,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 00:08:07,272 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2020-10-15 00:08:07,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:08:07,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:07,272 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] [2020-10-15 00:08:07,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 00:08:07,273 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:07,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:07,273 INFO L82 PathProgramCache]: Analyzing trace with hash 398276589, now seen corresponding path program 10 times [2020-10-15 00:08:07,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:07,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529314371] [2020-10-15 00:08:07,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:07,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:07,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:07,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:07,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:08:07,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-10-15 00:08:07,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:07,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:08:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:08:07,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:07,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:07,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:07,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:07,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:07,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:07,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:07,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:07,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:07,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:07,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:07,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:07,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:07,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:07,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:07,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:07,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:07,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 00:08:07,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:07,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:07,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:07,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:07,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:08:07,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:08,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:08:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:08,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:08,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:08,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:08,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:08:08,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:08,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-15 00:08:08,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:08,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:08,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:08,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:08,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:08:08,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:08,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529314371] [2020-10-15 00:08:08,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:08,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 00:08:08,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401420905] [2020-10-15 00:08:08,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 00:08:08,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:08,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 00:08:08,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:08:08,305 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 22 states. [2020-10-15 00:08:08,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:08,784 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2020-10-15 00:08:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 00:08:08,785 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 55 [2020-10-15 00:08:08,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:08,785 INFO L225 Difference]: With dead ends: 83 [2020-10-15 00:08:08,786 INFO L226 Difference]: Without dead ends: 71 [2020-10-15 00:08:08,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=305, Invalid=1335, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 00:08:08,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-15 00:08:08,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2020-10-15 00:08:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-15 00:08:08,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-15 00:08:08,796 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 55 [2020-10-15 00:08:08,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:08,796 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-15 00:08:08,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 00:08:08,797 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-15 00:08:08,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:08:08,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:08,797 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] [2020-10-15 00:08:08,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 00:08:08,798 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:08,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:08,798 INFO L82 PathProgramCache]: Analyzing trace with hash -872002811, now seen corresponding path program 9 times [2020-10-15 00:08:08,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:08,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488741118] [2020-10-15 00:08:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:08,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:08,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:09,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:08:09,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-15 00:08:09,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:09,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:08:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 00:08:09,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:09,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:09,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:09,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:09,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:09,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:09,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:09,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 00:08:09,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:09,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:08:09,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:09,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-15 00:08:09,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:09,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:08:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:09,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:08:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:09,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:09,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:09,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 00:08:09,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:09,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:08:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:09,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:09,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488741118] [2020-10-15 00:08:09,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:09,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 00:08:09,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969996947] [2020-10-15 00:08:09,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 00:08:09,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:09,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 00:08:09,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:08:09,600 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 22 states. [2020-10-15 00:08:10,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:10,154 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2020-10-15 00:08:10,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 00:08:10,155 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 55 [2020-10-15 00:08:10,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:10,156 INFO L225 Difference]: With dead ends: 77 [2020-10-15 00:08:10,156 INFO L226 Difference]: Without dead ends: 67 [2020-10-15 00:08:10,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=305, Invalid=1335, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 00:08:10,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-15 00:08:10,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-10-15 00:08:10,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-15 00:08:10,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-10-15 00:08:10,165 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 55 [2020-10-15 00:08:10,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:10,165 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-10-15 00:08:10,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 00:08:10,165 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-10-15 00:08:10,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 00:08:10,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:10,166 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] [2020-10-15 00:08:10,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 00:08:10,167 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:10,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:10,167 INFO L82 PathProgramCache]: Analyzing trace with hash -949640501, now seen corresponding path program 11 times [2020-10-15 00:08:10,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:10,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700898368] [2020-10-15 00:08:10,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:10,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:10,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:10,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 00:08:10,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:10,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-15 00:08:10,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:10,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:10,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:08:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 00:08:10,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:10,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:10,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:10,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:10,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:10,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:10,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:10,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:10,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:10,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:10,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:10,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:10,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:10,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:08:10,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:10,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 00:08:10,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:10,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:10,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:08:10,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:10,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:08:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:10,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:10,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:10,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:08:10,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-15 00:08:10,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:10,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:08:10,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:10,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700898368] [2020-10-15 00:08:10,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:10,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 00:08:10,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627386538] [2020-10-15 00:08:10,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 00:08:10,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:10,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 00:08:10,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:08:10,906 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 24 states. [2020-10-15 00:08:12,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:12,071 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-15 00:08:12,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 00:08:12,072 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 57 [2020-10-15 00:08:12,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:12,073 INFO L225 Difference]: With dead ends: 96 [2020-10-15 00:08:12,073 INFO L226 Difference]: Without dead ends: 87 [2020-10-15 00:08:12,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=1878, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:08:12,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-15 00:08:12,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 69. [2020-10-15 00:08:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-15 00:08:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-15 00:08:12,083 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 57 [2020-10-15 00:08:12,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:12,083 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-15 00:08:12,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 00:08:12,083 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-15 00:08:12,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 00:08:12,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:12,084 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] [2020-10-15 00:08:12,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 00:08:12,084 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:12,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:12,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1354939257, now seen corresponding path program 10 times [2020-10-15 00:08:12,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:12,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541818523] [2020-10-15 00:08:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:12,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:12,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:12,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 00:08:12,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:12,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-15 00:08:12,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:12,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:08:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 00:08:12,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:12,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:12,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:12,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:12,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:12,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:12,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:12,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:12,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:12,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:12,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:12,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:12,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:12,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:12,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:12,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:08:12,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 00:08:12,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:12,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:08:12,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:12,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:08:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:12,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:12,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:12,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:08:12,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:12,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-15 00:08:12,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:12,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:12,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:12,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:12,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:08:12,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:12,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541818523] [2020-10-15 00:08:12,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:12,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 00:08:12,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601086462] [2020-10-15 00:08:12,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 00:08:12,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:12,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 00:08:12,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:08:12,904 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 24 states. [2020-10-15 00:08:14,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:14,194 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2020-10-15 00:08:14,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 00:08:14,194 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 57 [2020-10-15 00:08:14,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:14,196 INFO L225 Difference]: With dead ends: 87 [2020-10-15 00:08:14,196 INFO L226 Difference]: Without dead ends: 76 [2020-10-15 00:08:14,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=248, Invalid=2302, Unknown=0, NotChecked=0, Total=2550 [2020-10-15 00:08:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-15 00:08:14,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-10-15 00:08:14,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-15 00:08:14,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2020-10-15 00:08:14,204 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 57 [2020-10-15 00:08:14,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:14,204 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2020-10-15 00:08:14,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 00:08:14,205 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2020-10-15 00:08:14,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:08:14,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:14,205 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 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] [2020-10-15 00:08:14,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 00:08:14,206 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:14,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:14,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1323645773, now seen corresponding path program 12 times [2020-10-15 00:08:14,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:14,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822339701] [2020-10-15 00:08:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:14,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:14,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:14,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:14,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 00:08:14,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:14,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-15 00:08:14,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:14,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:14,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:08:14,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:14,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 00:08:14,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:14,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:14,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:14,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:14,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:14,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:14,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:14,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:14,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:14,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:14,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:14,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:14,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:08:14,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:14,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-15 00:08:14,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:14,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:14,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:14,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:14,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:08:14,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:08:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:14,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:14,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:14,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:14,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:08:14,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:14,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-15 00:08:14,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:14,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:14,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:08:14,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:15,227 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:15,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822339701] [2020-10-15 00:08:15,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:15,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 00:08:15,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297707786] [2020-10-15 00:08:15,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 00:08:15,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:15,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 00:08:15,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:08:15,230 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand 24 states. [2020-10-15 00:08:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:16,087 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2020-10-15 00:08:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 00:08:16,087 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 59 [2020-10-15 00:08:16,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:16,089 INFO L225 Difference]: With dead ends: 87 [2020-10-15 00:08:16,089 INFO L226 Difference]: Without dead ends: 75 [2020-10-15 00:08:16,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=359, Invalid=1621, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 00:08:16,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-15 00:08:16,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2020-10-15 00:08:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-15 00:08:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-15 00:08:16,098 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 59 [2020-10-15 00:08:16,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:16,099 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-15 00:08:16,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 00:08:16,099 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-15 00:08:16,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:08:16,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:16,100 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 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] [2020-10-15 00:08:16,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 00:08:16,100 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:16,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:16,101 INFO L82 PathProgramCache]: Analyzing trace with hash 376860645, now seen corresponding path program 11 times [2020-10-15 00:08:16,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:16,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063729247] [2020-10-15 00:08:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:16,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:16,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 00:08:16,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:16,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-15 00:08:16,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:16,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:08:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 00:08:16,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:16,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:16,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:16,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:16,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:16,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:16,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:16,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:16,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:16,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:16,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:08:16,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:16,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-15 00:08:16,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:16,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:16,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:16,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:16,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:08:16,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:16,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:08:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:16,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:16,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:08:16,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 00:08:16,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:16,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:08:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:08:16,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:17,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063729247] [2020-10-15 00:08:17,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:17,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 00:08:17,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375332884] [2020-10-15 00:08:17,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 00:08:17,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:17,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 00:08:17,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:08:17,149 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 24 states. [2020-10-15 00:08:17,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:17,726 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2020-10-15 00:08:17,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 00:08:17,726 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 59 [2020-10-15 00:08:17,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:17,727 INFO L225 Difference]: With dead ends: 81 [2020-10-15 00:08:17,727 INFO L226 Difference]: Without dead ends: 71 [2020-10-15 00:08:17,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=367, Invalid=1613, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 00:08:17,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-15 00:08:17,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-10-15 00:08:17,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-15 00:08:17,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-10-15 00:08:17,742 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 59 [2020-10-15 00:08:17,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:17,742 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-10-15 00:08:17,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 00:08:17,743 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-10-15 00:08:17,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 00:08:17,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:17,745 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 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] [2020-10-15 00:08:17,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 00:08:17,746 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:17,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:17,746 INFO L82 PathProgramCache]: Analyzing trace with hash -863959253, now seen corresponding path program 13 times [2020-10-15 00:08:17,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:17,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464548774] [2020-10-15 00:08:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:17,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:17,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:17,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 00:08:17,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:17,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-15 00:08:17,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:17,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:17,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:08:17,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:17,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 00:08:17,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:18,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:18,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:18,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:18,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:18,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:18,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:18,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:18,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:18,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:18,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:18,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:18,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:18,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:08:18,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:18,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-15 00:08:18,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:18,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:08:18,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:08:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:18,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:18,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:18,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:08:18,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:18,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 00:08:18,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:18,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:18,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:08:18,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:18,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464548774] [2020-10-15 00:08:18,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:18,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:08:18,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542472891] [2020-10-15 00:08:18,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:08:18,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:18,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:08:18,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:08:18,593 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 26 states. [2020-10-15 00:08:20,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:20,006 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2020-10-15 00:08:20,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 00:08:20,007 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 61 [2020-10-15 00:08:20,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:20,008 INFO L225 Difference]: With dead ends: 96 [2020-10-15 00:08:20,008 INFO L226 Difference]: Without dead ends: 87 [2020-10-15 00:08:20,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=274, Invalid=2806, Unknown=0, NotChecked=0, Total=3080 [2020-10-15 00:08:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-15 00:08:20,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 73. [2020-10-15 00:08:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-15 00:08:20,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-15 00:08:20,025 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 61 [2020-10-15 00:08:20,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:20,025 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-15 00:08:20,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:08:20,025 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-15 00:08:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 00:08:20,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:20,028 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 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] [2020-10-15 00:08:20,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 00:08:20,029 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:20,029 INFO L82 PathProgramCache]: Analyzing trace with hash 506966375, now seen corresponding path program 12 times [2020-10-15 00:08:20,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:20,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025683939] [2020-10-15 00:08:20,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:20,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:20,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:20,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 00:08:20,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:20,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-15 00:08:20,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:20,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:20,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:08:20,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:20,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 00:08:20,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:20,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:20,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:20,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:20,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:20,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:20,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:20,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:20,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:20,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:20,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:20,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:20,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:20,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:20,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:20,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:20,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:08:20,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:20,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 00:08:20,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:20,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:20,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:20,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:20,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:08:20,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:20,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:08:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:20,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:20,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:20,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:08:20,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:20,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-15 00:08:20,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:20,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:20,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:08:20,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:20,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025683939] [2020-10-15 00:08:20,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:20,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:08:20,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151486331] [2020-10-15 00:08:20,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:08:20,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:20,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:08:20,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:08:20,992 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 26 states. [2020-10-15 00:08:22,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:22,239 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2020-10-15 00:08:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 00:08:22,239 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 61 [2020-10-15 00:08:22,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:22,240 INFO L225 Difference]: With dead ends: 91 [2020-10-15 00:08:22,241 INFO L226 Difference]: Without dead ends: 80 [2020-10-15 00:08:22,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=201, Invalid=2151, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 00:08:22,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-15 00:08:22,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-10-15 00:08:22,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-15 00:08:22,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2020-10-15 00:08:22,251 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 61 [2020-10-15 00:08:22,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:22,251 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2020-10-15 00:08:22,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:08:22,252 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2020-10-15 00:08:22,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 00:08:22,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:22,253 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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] [2020-10-15 00:08:22,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 00:08:22,253 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:22,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:22,253 INFO L82 PathProgramCache]: Analyzing trace with hash 2058946477, now seen corresponding path program 14 times [2020-10-15 00:08:22,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:22,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50625680] [2020-10-15 00:08:22,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:22,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:22,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:22,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 00:08:22,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:22,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-15 00:08:22,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:22,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:08:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 00:08:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:22,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:22,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:22,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:22,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:22,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:22,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:22,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:22,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:22,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:22,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:22,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:22,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:22,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:08:22,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:22,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 00:08:22,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:22,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:08:22,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:22,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:08:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:22,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:22,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:22,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:08:22,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:22,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-15 00:08:22,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:22,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:08:22,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:23,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50625680] [2020-10-15 00:08:23,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:23,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:08:23,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315988966] [2020-10-15 00:08:23,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:08:23,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:23,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:08:23,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:08:23,042 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand 26 states. [2020-10-15 00:08:24,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:24,028 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2020-10-15 00:08:24,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 00:08:24,029 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 63 [2020-10-15 00:08:24,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:24,030 INFO L225 Difference]: With dead ends: 91 [2020-10-15 00:08:24,031 INFO L226 Difference]: Without dead ends: 79 [2020-10-15 00:08:24,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=426, Invalid=1926, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 00:08:24,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-15 00:08:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-10-15 00:08:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-15 00:08:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-15 00:08:24,045 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 63 [2020-10-15 00:08:24,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:24,046 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-15 00:08:24,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:08:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-15 00:08:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 00:08:24,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:24,047 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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] [2020-10-15 00:08:24,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 00:08:24,048 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:24,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:24,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1542455867, now seen corresponding path program 13 times [2020-10-15 00:08:24,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:24,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586946838] [2020-10-15 00:08:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:24,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:24,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:24,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:24,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 00:08:24,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-15 00:08:24,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:24,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:08:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:08:24,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:24,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:24,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:24,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:24,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:24,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:24,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:24,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:24,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:24,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:24,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:24,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:24,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:24,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:24,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:24,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:24,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:08:24,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:24,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-15 00:08:24,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:24,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:08:24,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:25,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 00:08:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:25,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:25,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:25,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:08:25,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:25,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 00:08:25,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:25,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:08:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:08:25,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:25,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586946838] [2020-10-15 00:08:25,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:25,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:08:25,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029448320] [2020-10-15 00:08:25,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:08:25,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:25,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:08:25,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:08:25,333 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 26 states. [2020-10-15 00:08:26,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:26,344 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2020-10-15 00:08:26,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 00:08:26,345 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 63 [2020-10-15 00:08:26,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:26,346 INFO L225 Difference]: With dead ends: 85 [2020-10-15 00:08:26,346 INFO L226 Difference]: Without dead ends: 75 [2020-10-15 00:08:26,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=417, Invalid=1935, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 00:08:26,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-15 00:08:26,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2020-10-15 00:08:26,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-15 00:08:26,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-10-15 00:08:26,361 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 63 [2020-10-15 00:08:26,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:26,361 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-10-15 00:08:26,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:08:26,361 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-10-15 00:08:26,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 00:08:26,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:26,362 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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] [2020-10-15 00:08:26,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 00:08:26,363 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:26,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:26,363 INFO L82 PathProgramCache]: Analyzing trace with hash -340806517, now seen corresponding path program 15 times [2020-10-15 00:08:26,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:26,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999184839] [2020-10-15 00:08:26,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 00:08:26,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-15 00:08:26,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 00:08:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 00:08:26,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:26,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:26,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:26,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:08:26,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-15 00:08:26,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:08:26,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 00:08:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:08:26,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 00:08:26,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:26,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:26,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:08:26,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:27,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999184839] [2020-10-15 00:08:27,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:27,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:08:27,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259149823] [2020-10-15 00:08:27,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:08:27,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:27,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:08:27,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:08:27,434 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 28 states. [2020-10-15 00:08:29,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:29,215 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2020-10-15 00:08:29,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:08:29,219 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 65 [2020-10-15 00:08:29,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:29,220 INFO L225 Difference]: With dead ends: 104 [2020-10-15 00:08:29,220 INFO L226 Difference]: Without dead ends: 95 [2020-10-15 00:08:29,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=218, Invalid=2644, Unknown=0, NotChecked=0, Total=2862 [2020-10-15 00:08:29,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-15 00:08:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2020-10-15 00:08:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-15 00:08:29,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-15 00:08:29,234 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 65 [2020-10-15 00:08:29,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:29,234 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-15 00:08:29,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:08:29,235 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-15 00:08:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 00:08:29,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:29,235 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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] [2020-10-15 00:08:29,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 00:08:29,236 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:29,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:29,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1415231673, now seen corresponding path program 14 times [2020-10-15 00:08:29,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:29,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382395557] [2020-10-15 00:08:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:29,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:29,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 00:08:29,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:29,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-15 00:08:29,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:29,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 00:08:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:29,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 00:08:29,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:29,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:29,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:29,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:29,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:29,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:29,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:29,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:29,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:29,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:29,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:29,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:29,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:29,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:08:29,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:29,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 00:08:29,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:29,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:08:29,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:29,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 00:08:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:29,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:29,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:29,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:08:29,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:29,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 00:08:29,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:29,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:29,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:29,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:29,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:08:29,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:30,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382395557] [2020-10-15 00:08:30,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:30,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:08:30,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178241022] [2020-10-15 00:08:30,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:08:30,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:30,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:08:30,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:08:30,338 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 28 states. [2020-10-15 00:08:32,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:32,105 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-10-15 00:08:32,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:08:32,106 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 65 [2020-10-15 00:08:32,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:32,107 INFO L225 Difference]: With dead ends: 99 [2020-10-15 00:08:32,107 INFO L226 Difference]: Without dead ends: 88 [2020-10-15 00:08:32,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=218, Invalid=2644, Unknown=0, NotChecked=0, Total=2862 [2020-10-15 00:08:32,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-15 00:08:32,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 80. [2020-10-15 00:08:32,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-15 00:08:32,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2020-10-15 00:08:32,119 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 65 [2020-10-15 00:08:32,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:32,119 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2020-10-15 00:08:32,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:08:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2020-10-15 00:08:32,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 00:08:32,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:32,121 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 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] [2020-10-15 00:08:32,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 00:08:32,121 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:32,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:32,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1997415155, now seen corresponding path program 16 times [2020-10-15 00:08:32,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:32,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422526672] [2020-10-15 00:08:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:32,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:32,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:32,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:32,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 00:08:32,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:32,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-15 00:08:32,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:32,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:32,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 00:08:32,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:32,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 00:08:32,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:32,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:32,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:32,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:32,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:32,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:32,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:32,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:32,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:32,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:32,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:32,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:32,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:08:32,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:32,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 00:08:32,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:32,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:08:32,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:32,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 00:08:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:32,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:32,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:32,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:32,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:08:32,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:32,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-15 00:08:32,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:32,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:32,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:32,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:32,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:08:32,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:33,195 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:33,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422526672] [2020-10-15 00:08:33,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:33,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:08:33,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128461156] [2020-10-15 00:08:33,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:08:33,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:33,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:08:33,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:08:33,197 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand 28 states. [2020-10-15 00:08:34,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:34,043 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-10-15 00:08:34,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 00:08:34,044 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 67 [2020-10-15 00:08:34,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:34,045 INFO L225 Difference]: With dead ends: 95 [2020-10-15 00:08:34,045 INFO L226 Difference]: Without dead ends: 83 [2020-10-15 00:08:34,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=499, Invalid=2257, Unknown=0, NotChecked=0, Total=2756 [2020-10-15 00:08:34,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-15 00:08:34,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2020-10-15 00:08:34,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-15 00:08:34,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-15 00:08:34,057 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 67 [2020-10-15 00:08:34,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:34,057 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-15 00:08:34,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:08:34,057 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-15 00:08:34,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 00:08:34,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:34,058 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 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] [2020-10-15 00:08:34,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 00:08:34,059 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:34,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:34,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1180420955, now seen corresponding path program 15 times [2020-10-15 00:08:34,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:34,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359144200] [2020-10-15 00:08:34,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:34,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:34,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:34,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:34,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 00:08:34,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:34,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-15 00:08:34,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:34,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 00:08:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 00:08:34,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:34,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:34,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:34,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:34,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:34,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:34,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:34,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:34,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:34,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:34,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:34,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:34,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:34,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:08:34,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:34,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-15 00:08:34,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:34,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:08:34,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:34,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 00:08:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:34,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:34,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:34,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:08:34,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:34,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-15 00:08:34,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:34,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:08:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:08:34,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:35,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359144200] [2020-10-15 00:08:35,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:35,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:08:35,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580495153] [2020-10-15 00:08:35,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:08:35,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:35,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:08:35,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:08:35,152 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 28 states. [2020-10-15 00:08:35,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:35,907 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2020-10-15 00:08:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 00:08:35,908 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 67 [2020-10-15 00:08:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:35,909 INFO L225 Difference]: With dead ends: 89 [2020-10-15 00:08:35,909 INFO L226 Difference]: Without dead ends: 79 [2020-10-15 00:08:35,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=509, Invalid=2247, Unknown=0, NotChecked=0, Total=2756 [2020-10-15 00:08:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-15 00:08:35,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-10-15 00:08:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-15 00:08:35,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-10-15 00:08:35,918 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 67 [2020-10-15 00:08:35,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:35,919 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-10-15 00:08:35,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:08:35,919 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-10-15 00:08:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 00:08:35,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:35,920 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 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] [2020-10-15 00:08:35,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 00:08:35,920 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:35,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:35,921 INFO L82 PathProgramCache]: Analyzing trace with hash 317385451, now seen corresponding path program 17 times [2020-10-15 00:08:35,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:35,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209908128] [2020-10-15 00:08:35,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:35,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:36,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:36,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 00:08:36,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:36,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-15 00:08:36,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:36,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 00:08:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 00:08:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:36,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:36,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:36,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:36,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:36,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:36,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:36,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:36,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:36,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:36,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:36,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:36,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:36,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:36,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:36,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:36,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:08:36,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:36,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-15 00:08:36,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:36,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:36,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:08:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:08:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:36,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 00:08:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:36,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:36,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:08:36,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:36,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 00:08:36,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:36,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:08:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:08:36,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:36,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209908128] [2020-10-15 00:08:36,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:36,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:08:36,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329230206] [2020-10-15 00:08:36,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:08:36,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:36,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:08:36,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=802, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:08:36,983 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 30 states. [2020-10-15 00:08:39,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:39,027 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2020-10-15 00:08:39,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 00:08:39,028 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 69 [2020-10-15 00:08:39,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:39,030 INFO L225 Difference]: With dead ends: 108 [2020-10-15 00:08:39,030 INFO L226 Difference]: Without dead ends: 99 [2020-10-15 00:08:39,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=235, Invalid=3071, Unknown=0, NotChecked=0, Total=3306 [2020-10-15 00:08:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-15 00:08:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-10-15 00:08:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-15 00:08:39,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-15 00:08:39,041 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 69 [2020-10-15 00:08:39,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:39,041 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-15 00:08:39,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:08:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-15 00:08:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 00:08:39,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:39,043 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 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] [2020-10-15 00:08:39,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 00:08:39,043 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:39,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:39,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1392032217, now seen corresponding path program 16 times [2020-10-15 00:08:39,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:39,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897294278] [2020-10-15 00:08:39,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:39,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:39,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 00:08:39,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:39,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-15 00:08:39,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:39,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:39,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 00:08:39,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:39,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 00:08:39,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:39,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:39,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:39,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:39,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:39,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:39,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:39,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:39,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:39,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:08:39,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:39,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-15 00:08:39,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:39,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:08:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:39,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:08:39,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:39,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 00:08:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:39,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:39,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:08:39,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 00:08:39,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:39,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:08:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:08:39,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:40,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897294278] [2020-10-15 00:08:40,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:40,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:08:40,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263437994] [2020-10-15 00:08:40,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:08:40,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:40,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:08:40,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=802, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:08:40,053 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 30 states. [2020-10-15 00:08:42,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:42,113 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2020-10-15 00:08:42,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 00:08:42,114 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 69 [2020-10-15 00:08:42,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:42,116 INFO L225 Difference]: With dead ends: 103 [2020-10-15 00:08:42,116 INFO L226 Difference]: Without dead ends: 92 [2020-10-15 00:08:42,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=235, Invalid=3071, Unknown=0, NotChecked=0, Total=3306 [2020-10-15 00:08:42,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-15 00:08:42,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2020-10-15 00:08:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-15 00:08:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2020-10-15 00:08:42,127 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 69 [2020-10-15 00:08:42,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:42,128 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2020-10-15 00:08:42,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:08:42,128 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2020-10-15 00:08:42,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 00:08:42,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:42,129 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 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] [2020-10-15 00:08:42,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 00:08:42,129 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:42,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:42,129 INFO L82 PathProgramCache]: Analyzing trace with hash -835126419, now seen corresponding path program 18 times [2020-10-15 00:08:42,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:42,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810145421] [2020-10-15 00:08:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:42,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:42,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:42,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:42,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 00:08:42,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:42,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-15 00:08:42,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:42,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 00:08:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 00:08:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:42,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:42,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:42,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:42,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:42,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:42,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:42,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:42,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:42,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:42,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:42,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:42,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:42,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:08:42,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:42,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 00:08:42,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:42,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:08:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:08:42,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:42,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 00:08:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:42,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:42,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:43,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:43,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:08:43,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:43,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-15 00:08:43,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:43,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:08:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:08:43,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:43,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810145421] [2020-10-15 00:08:43,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:43,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:08:43,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550281890] [2020-10-15 00:08:43,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:08:43,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:43,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:08:43,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=681, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:08:43,256 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 30 states. [2020-10-15 00:08:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:44,089 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-10-15 00:08:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 00:08:44,090 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 71 [2020-10-15 00:08:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:44,092 INFO L225 Difference]: With dead ends: 99 [2020-10-15 00:08:44,092 INFO L226 Difference]: Without dead ends: 87 [2020-10-15 00:08:44,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=589, Invalid=2603, Unknown=0, NotChecked=0, Total=3192 [2020-10-15 00:08:44,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-15 00:08:44,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2020-10-15 00:08:44,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-15 00:08:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-15 00:08:44,101 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 71 [2020-10-15 00:08:44,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:44,101 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-15 00:08:44,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:08:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-15 00:08:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 00:08:44,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:44,102 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 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] [2020-10-15 00:08:44,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-15 00:08:44,102 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:44,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:44,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1661709179, now seen corresponding path program 17 times [2020-10-15 00:08:44,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:44,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287535343] [2020-10-15 00:08:44,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:44,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:44,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 00:08:44,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:44,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-15 00:08:44,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:44,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 00:08:44,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:44,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 00:08:44,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:44,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:44,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:44,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:44,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:44,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:44,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:44,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:44,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:44,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:44,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:44,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:44,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:08:44,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:44,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-15 00:08:44,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:44,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:44,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:08:44,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:44,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:08:44,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:44,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 00:08:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:44,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:08:44,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:44,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 00:08:44,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:44,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:44,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:08:44,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:44,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:08:44,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:45,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287535343] [2020-10-15 00:08:45,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:45,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:08:45,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322026052] [2020-10-15 00:08:45,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:08:45,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:45,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:08:45,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=681, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:08:45,210 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 30 states. [2020-10-15 00:08:46,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:46,059 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2020-10-15 00:08:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 00:08:46,060 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 71 [2020-10-15 00:08:46,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:46,061 INFO L225 Difference]: With dead ends: 93 [2020-10-15 00:08:46,061 INFO L226 Difference]: Without dead ends: 83 [2020-10-15 00:08:46,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=589, Invalid=2603, Unknown=0, NotChecked=0, Total=3192 [2020-10-15 00:08:46,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-15 00:08:46,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2020-10-15 00:08:46,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-15 00:08:46,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2020-10-15 00:08:46,069 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 71 [2020-10-15 00:08:46,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:46,070 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2020-10-15 00:08:46,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:08:46,070 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2020-10-15 00:08:46,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 00:08:46,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:46,071 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 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] [2020-10-15 00:08:46,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-15 00:08:46,071 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:46,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:46,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1998318155, now seen corresponding path program 19 times [2020-10-15 00:08:46,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:46,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414608943] [2020-10-15 00:08:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:46,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:46,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:46,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 00:08:46,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:46,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-15 00:08:46,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:46,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 00:08:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 00:08:46,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:46,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:46,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:46,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:46,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:46,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:46,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:46,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:46,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:46,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:46,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:46,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:46,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:46,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:08:46,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:46,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 00:08:46,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:46,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:08:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:08:46,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:46,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 00:08:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:46,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:46,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:08:46,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:46,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 00:08:46,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:46,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:46,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:08:46,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:46,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:08:46,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:47,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414608943] [2020-10-15 00:08:47,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:47,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:08:47,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766118078] [2020-10-15 00:08:47,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:08:47,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:47,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:08:47,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:08:47,155 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand 32 states. [2020-10-15 00:08:49,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:49,052 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2020-10-15 00:08:49,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 00:08:49,053 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 73 [2020-10-15 00:08:49,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:49,055 INFO L225 Difference]: With dead ends: 112 [2020-10-15 00:08:49,055 INFO L226 Difference]: Without dead ends: 103 [2020-10-15 00:08:49,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=264, Invalid=3518, Unknown=0, NotChecked=0, Total=3782 [2020-10-15 00:08:49,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-15 00:08:49,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85. [2020-10-15 00:08:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-15 00:08:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-15 00:08:49,066 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 73 [2020-10-15 00:08:49,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:49,067 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-15 00:08:49,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:08:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-15 00:08:49,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 00:08:49,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:49,068 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 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] [2020-10-15 00:08:49,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-15 00:08:49,068 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:49,068 INFO L82 PathProgramCache]: Analyzing trace with hash -53547513, now seen corresponding path program 18 times [2020-10-15 00:08:49,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:49,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318080109] [2020-10-15 00:08:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:49,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:49,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:49,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 00:08:49,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-15 00:08:49,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:49,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 00:08:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 00:08:49,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:49,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:49,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:49,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:49,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:49,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:49,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:49,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:49,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:49,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:49,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:49,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:49,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:08:49,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:49,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-15 00:08:49,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:49,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:49,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:08:49,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:49,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:08:49,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:49,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 00:08:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:49,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:49,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:08:49,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:49,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-15 00:08:49,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:49,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:08:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:49,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:08:49,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:50,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318080109] [2020-10-15 00:08:50,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:50,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:08:50,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748974484] [2020-10-15 00:08:50,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:08:50,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:50,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:08:50,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:08:50,351 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 32 states. [2020-10-15 00:08:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:52,036 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2020-10-15 00:08:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 00:08:52,037 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 73 [2020-10-15 00:08:52,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:52,038 INFO L225 Difference]: With dead ends: 107 [2020-10-15 00:08:52,038 INFO L226 Difference]: Without dead ends: 96 [2020-10-15 00:08:52,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=264, Invalid=3518, Unknown=0, NotChecked=0, Total=3782 [2020-10-15 00:08:52,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-15 00:08:52,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2020-10-15 00:08:52,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-15 00:08:52,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-10-15 00:08:52,050 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 73 [2020-10-15 00:08:52,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:52,051 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-10-15 00:08:52,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:08:52,051 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-10-15 00:08:52,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 00:08:52,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:52,052 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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] [2020-10-15 00:08:52,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-15 00:08:52,052 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:52,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:52,052 INFO L82 PathProgramCache]: Analyzing trace with hash -366501171, now seen corresponding path program 20 times [2020-10-15 00:08:52,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:52,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757024269] [2020-10-15 00:08:52,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:52,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:52,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:52,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 00:08:52,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:52,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-10-15 00:08:52,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:52,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 00:08:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 00:08:52,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:52,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:52,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:52,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:52,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:52,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:52,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:52,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:52,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:52,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:52,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:52,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:52,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:08:52,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:52,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 00:08:52,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:52,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:52,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:08:52,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:52,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:08:52,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:53,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 00:08:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:53,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:53,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:53,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:53,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:08:53,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:53,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-15 00:08:53,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:53,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:08:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:08:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:53,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757024269] [2020-10-15 00:08:53,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:53,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:08:53,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357371318] [2020-10-15 00:08:53,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:08:53,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:53,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:08:53,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=775, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:08:53,472 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 32 states. [2020-10-15 00:08:54,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:54,445 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2020-10-15 00:08:54,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 00:08:54,446 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 75 [2020-10-15 00:08:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:54,447 INFO L225 Difference]: With dead ends: 103 [2020-10-15 00:08:54,447 INFO L226 Difference]: Without dead ends: 91 [2020-10-15 00:08:54,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=675, Invalid=2985, Unknown=0, NotChecked=0, Total=3660 [2020-10-15 00:08:54,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-15 00:08:54,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2020-10-15 00:08:54,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-15 00:08:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-15 00:08:54,457 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 75 [2020-10-15 00:08:54,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:54,457 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-15 00:08:54,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:08:54,457 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-15 00:08:54,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 00:08:54,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:54,458 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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] [2020-10-15 00:08:54,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-15 00:08:54,458 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:54,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:54,459 INFO L82 PathProgramCache]: Analyzing trace with hash -122577563, now seen corresponding path program 19 times [2020-10-15 00:08:54,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:54,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931333918] [2020-10-15 00:08:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:54,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:54,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 00:08:54,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:54,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-15 00:08:54,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:54,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 00:08:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 00:08:54,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:54,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:54,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:54,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:54,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:54,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:54,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:54,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:54,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:54,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:54,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:54,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:54,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:54,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:55,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:08:55,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:55,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-15 00:08:55,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:55,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:08:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:08:55,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:55,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 00:08:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:55,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:55,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:08:55,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:55,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 00:08:55,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:55,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:55,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:08:55,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:55,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:08:55,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:55,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931333918] [2020-10-15 00:08:55,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:55,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:08:55,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248587158] [2020-10-15 00:08:55,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:08:55,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:55,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:08:55,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=787, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:08:55,723 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 32 states. [2020-10-15 00:08:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:56,838 INFO L93 Difference]: Finished difference Result 97 states and 100 transitions. [2020-10-15 00:08:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 00:08:56,839 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 75 [2020-10-15 00:08:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:56,839 INFO L225 Difference]: With dead ends: 97 [2020-10-15 00:08:56,840 INFO L226 Difference]: Without dead ends: 87 [2020-10-15 00:08:56,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=663, Invalid=2997, Unknown=0, NotChecked=0, Total=3660 [2020-10-15 00:08:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-15 00:08:56,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-10-15 00:08:56,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-15 00:08:56,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2020-10-15 00:08:56,850 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 75 [2020-10-15 00:08:56,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:56,850 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2020-10-15 00:08:56,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:08:56,850 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2020-10-15 00:08:56,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 00:08:56,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:56,851 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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] [2020-10-15 00:08:56,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-15 00:08:56,851 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:56,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:56,852 INFO L82 PathProgramCache]: Analyzing trace with hash 2015097515, now seen corresponding path program 21 times [2020-10-15 00:08:56,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:56,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854976511] [2020-10-15 00:08:56,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:56,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:57,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 00:08:57,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-15 00:08:57,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:57,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:57,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 00:08:57,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:08:57,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 00:08:57,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:57,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:57,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:57,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:57,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:57,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:57,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:57,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:57,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:57,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:57,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:57,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:57,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:08:57,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-15 00:08:57,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:57,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:08:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:08:57,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:57,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 00:08:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:57,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:57,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:08:57,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:57,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-15 00:08:57,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:57,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:08:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:08:57,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:58,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854976511] [2020-10-15 00:08:58,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:58,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 00:08:58,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541026950] [2020-10-15 00:08:58,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 00:08:58,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:58,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 00:08:58,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1031, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:08:58,314 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand 34 states. [2020-10-15 00:09:00,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:00,160 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-15 00:09:00,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 00:09:00,161 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 77 [2020-10-15 00:09:00,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:00,162 INFO L225 Difference]: With dead ends: 116 [2020-10-15 00:09:00,162 INFO L226 Difference]: Without dead ends: 107 [2020-10-15 00:09:00,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=282, Invalid=4008, Unknown=0, NotChecked=0, Total=4290 [2020-10-15 00:09:00,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-15 00:09:00,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2020-10-15 00:09:00,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-15 00:09:00,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-15 00:09:00,175 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 77 [2020-10-15 00:09:00,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:00,175 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-15 00:09:00,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 00:09:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-15 00:09:00,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 00:09:00,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:00,176 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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] [2020-10-15 00:09:00,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-15 00:09:00,177 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:00,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:00,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1583185639, now seen corresponding path program 20 times [2020-10-15 00:09:00,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:00,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828286704] [2020-10-15 00:09:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:00,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:00,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:00,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 00:09:00,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-15 00:09:00,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:00,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 00:09:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 00:09:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:00,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:00,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:00,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:00,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:00,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:00,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:00,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:00,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:00,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:00,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:00,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:00,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:00,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:00,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:00,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:09:00,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:00,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-15 00:09:00,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:00,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:09:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:09:00,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:00,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 00:09:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:00,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:00,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:00,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:09:00,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:00,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 00:09:00,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:00,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:09:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:09:00,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:01,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828286704] [2020-10-15 00:09:01,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:01,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 00:09:01,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534996021] [2020-10-15 00:09:01,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 00:09:01,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:01,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 00:09:01,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1031, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:09:01,365 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 34 states. [2020-10-15 00:09:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:03,131 INFO L93 Difference]: Finished difference Result 111 states and 118 transitions. [2020-10-15 00:09:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 00:09:03,132 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 77 [2020-10-15 00:09:03,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:03,133 INFO L225 Difference]: With dead ends: 111 [2020-10-15 00:09:03,133 INFO L226 Difference]: Without dead ends: 100 [2020-10-15 00:09:03,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=282, Invalid=4008, Unknown=0, NotChecked=0, Total=4290 [2020-10-15 00:09:03,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-15 00:09:03,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2020-10-15 00:09:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-15 00:09:03,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2020-10-15 00:09:03,146 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 77 [2020-10-15 00:09:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:03,146 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2020-10-15 00:09:03,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 00:09:03,146 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2020-10-15 00:09:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 00:09:03,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:03,147 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 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] [2020-10-15 00:09:03,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-15 00:09:03,147 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:03,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:03,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1421405395, now seen corresponding path program 22 times [2020-10-15 00:09:03,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:03,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052383868] [2020-10-15 00:09:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:03,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:03,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:03,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:03,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 00:09:03,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:03,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-10-15 00:09:03,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:03,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 00:09:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 00:09:03,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:03,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:03,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:03,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:03,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:03,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:03,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:03,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:03,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:03,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:03,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:03,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:09:03,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:03,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-15 00:09:03,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:03,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:03,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:09:03,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:03,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:09:03,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:04,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 00:09:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:04,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:04,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:04,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:04,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:09:04,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:04,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-15 00:09:04,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:04,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:09:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:04,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:09:04,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:04,560 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:04,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052383868] [2020-10-15 00:09:04,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:04,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 00:09:04,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180490283] [2020-10-15 00:09:04,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 00:09:04,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:04,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 00:09:04,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:09:04,562 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand 34 states. [2020-10-15 00:09:05,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:05,599 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-15 00:09:05,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-15 00:09:05,600 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 79 [2020-10-15 00:09:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:05,602 INFO L225 Difference]: With dead ends: 107 [2020-10-15 00:09:05,602 INFO L226 Difference]: Without dead ends: 95 [2020-10-15 00:09:05,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=767, Invalid=3393, Unknown=0, NotChecked=0, Total=4160 [2020-10-15 00:09:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-15 00:09:05,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2020-10-15 00:09:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-15 00:09:05,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-15 00:09:05,618 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 79 [2020-10-15 00:09:05,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:05,618 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-15 00:09:05,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 00:09:05,618 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-15 00:09:05,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 00:09:05,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:05,619 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 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] [2020-10-15 00:09:05,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-15 00:09:05,619 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:05,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1081954117, now seen corresponding path program 21 times [2020-10-15 00:09:05,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:05,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478036945] [2020-10-15 00:09:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:05,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:05,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:06,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 00:09:06,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:06,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-15 00:09:06,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:06,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 00:09:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 00:09:06,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:06,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:06,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:06,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:06,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:06,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:06,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:06,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:06,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:06,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:06,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:09:06,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:06,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-15 00:09:06,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:06,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:06,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:09:06,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:06,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:09:06,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:06,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 00:09:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:06,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:06,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:09:06,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:06,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 00:09:06,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:06,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:06,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:09:06,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:06,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:09:06,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:06,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478036945] [2020-10-15 00:09:06,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:06,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 00:09:06,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676034608] [2020-10-15 00:09:06,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 00:09:06,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:06,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 00:09:06,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:09:06,873 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 34 states. [2020-10-15 00:09:08,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:08,419 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2020-10-15 00:09:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-15 00:09:08,420 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 79 [2020-10-15 00:09:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:08,421 INFO L225 Difference]: With dead ends: 101 [2020-10-15 00:09:08,421 INFO L226 Difference]: Without dead ends: 91 [2020-10-15 00:09:08,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=754, Invalid=3406, Unknown=0, NotChecked=0, Total=4160 [2020-10-15 00:09:08,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-15 00:09:08,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-15 00:09:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-15 00:09:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2020-10-15 00:09:08,436 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 79 [2020-10-15 00:09:08,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:08,437 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2020-10-15 00:09:08,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 00:09:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2020-10-15 00:09:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 00:09:08,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:08,438 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 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] [2020-10-15 00:09:08,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-15 00:09:08,438 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:08,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:08,438 INFO L82 PathProgramCache]: Analyzing trace with hash -2068560885, now seen corresponding path program 23 times [2020-10-15 00:09:08,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:08,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530453411] [2020-10-15 00:09:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:08,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:08,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:08,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 00:09:08,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:08,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-15 00:09:08,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:08,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:08,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-15 00:09:08,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-15 00:09:08,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:08,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:08,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:08,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:08,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:08,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:08,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:08,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:08,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:08,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:08,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:08,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:08,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:08,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:08,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:08,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:08,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:09:08,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:08,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-15 00:09:08,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:08,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:09:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:09:08,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:09,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 00:09:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:09,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:09,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:09:09,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:09,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-15 00:09:09,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:09,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:09:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:09:09,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:09,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530453411] [2020-10-15 00:09:09,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:09,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-15 00:09:09,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4351753] [2020-10-15 00:09:09,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-15 00:09:09,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:09,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-15 00:09:09,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1163, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:09:09,804 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand 36 states. [2020-10-15 00:09:11,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:11,933 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2020-10-15 00:09:11,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 00:09:11,934 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 81 [2020-10-15 00:09:11,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:11,935 INFO L225 Difference]: With dead ends: 120 [2020-10-15 00:09:11,935 INFO L226 Difference]: Without dead ends: 111 [2020-10-15 00:09:11,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=300, Invalid=4530, Unknown=0, NotChecked=0, Total=4830 [2020-10-15 00:09:11,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-15 00:09:11,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 93. [2020-10-15 00:09:11,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-15 00:09:11,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-15 00:09:11,949 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 81 [2020-10-15 00:09:11,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:11,949 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-15 00:09:11,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-15 00:09:11,949 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-15 00:09:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 00:09:11,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:11,950 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 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] [2020-10-15 00:09:11,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-15 00:09:11,950 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:11,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:11,951 INFO L82 PathProgramCache]: Analyzing trace with hash -503039801, now seen corresponding path program 22 times [2020-10-15 00:09:11,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:11,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432937177] [2020-10-15 00:09:11,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:11,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:12,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 00:09:12,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:12,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-15 00:09:12,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:12,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:12,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-15 00:09:12,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:12,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-15 00:09:12,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:12,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:12,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:12,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:12,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:12,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:12,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:12,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:12,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:12,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:12,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:12,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:09:12,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:12,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 00:09:12,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:12,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:12,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:09:12,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:12,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:09:12,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:12,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 00:09:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:12,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:12,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:09:12,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:12,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 00:09:12,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:12,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:12,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:09:12,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:12,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:09:12,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:13,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432937177] [2020-10-15 00:09:13,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:13,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-15 00:09:13,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864295922] [2020-10-15 00:09:13,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-15 00:09:13,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:13,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-15 00:09:13,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1163, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:09:13,425 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 36 states. [2020-10-15 00:09:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:15,449 INFO L93 Difference]: Finished difference Result 115 states and 122 transitions. [2020-10-15 00:09:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 00:09:15,450 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 81 [2020-10-15 00:09:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:15,451 INFO L225 Difference]: With dead ends: 115 [2020-10-15 00:09:15,451 INFO L226 Difference]: Without dead ends: 104 [2020-10-15 00:09:15,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=300, Invalid=4530, Unknown=0, NotChecked=0, Total=4830 [2020-10-15 00:09:15,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-15 00:09:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2020-10-15 00:09:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-15 00:09:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2020-10-15 00:09:15,464 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 81 [2020-10-15 00:09:15,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:15,464 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2020-10-15 00:09:15,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-15 00:09:15,465 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2020-10-15 00:09:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 00:09:15,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:15,465 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 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] [2020-10-15 00:09:15,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-15 00:09:15,466 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:15,466 INFO L82 PathProgramCache]: Analyzing trace with hash -217019251, now seen corresponding path program 24 times [2020-10-15 00:09:15,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:15,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85876334] [2020-10-15 00:09:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:15,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:16,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:16,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-15 00:09:16,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:16,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-15 00:09:16,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:16,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:16,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-15 00:09:16,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:16,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 00:09:16,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:16,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:16,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:16,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:16,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:16,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:16,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:16,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:16,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:16,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:16,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:16,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:16,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:16,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:16,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:16,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:16,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:09:16,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:16,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-15 00:09:16,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:16,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:09:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:09:16,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:16,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 00:09:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:16,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:16,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:16,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:16,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:09:16,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:16,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-15 00:09:16,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:16,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:16,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:09:16,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:16,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:09:16,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:17,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85876334] [2020-10-15 00:09:17,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:17,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-15 00:09:17,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866738696] [2020-10-15 00:09:17,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-15 00:09:17,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:17,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-15 00:09:17,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=995, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:09:17,040 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand 36 states. [2020-10-15 00:09:18,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:18,805 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-15 00:09:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-15 00:09:18,806 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 83 [2020-10-15 00:09:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:18,807 INFO L225 Difference]: With dead ends: 111 [2020-10-15 00:09:18,807 INFO L226 Difference]: Without dead ends: 99 [2020-10-15 00:09:18,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=851, Invalid=3841, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 00:09:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-15 00:09:18,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2020-10-15 00:09:18,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-15 00:09:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-15 00:09:18,820 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 83 [2020-10-15 00:09:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:18,821 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-15 00:09:18,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-15 00:09:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-15 00:09:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 00:09:18,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:18,822 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 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] [2020-10-15 00:09:18,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-15 00:09:18,822 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:18,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:18,823 INFO L82 PathProgramCache]: Analyzing trace with hash 350792229, now seen corresponding path program 23 times [2020-10-15 00:09:18,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:18,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842277473] [2020-10-15 00:09:18,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:18,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:19,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:19,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-15 00:09:19,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:19,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-15 00:09:19,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:19,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:19,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-15 00:09:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 00:09:19,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:19,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:19,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:19,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:19,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:19,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:19,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:19,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:19,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:19,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:19,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:19,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:19,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:19,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:19,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:19,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:19,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:09:19,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:19,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-15 00:09:19,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:19,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:19,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:09:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:09:19,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:20,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 00:09:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:20,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:20,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:20,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:09:20,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:20,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-15 00:09:20,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:20,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:20,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:09:20,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:20,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:09:20,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:20,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842277473] [2020-10-15 00:09:20,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:20,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-15 00:09:20,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644903702] [2020-10-15 00:09:20,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-15 00:09:20,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:20,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-15 00:09:20,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=995, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:09:20,687 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 36 states. [2020-10-15 00:09:22,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:22,695 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2020-10-15 00:09:22,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-15 00:09:22,696 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 83 [2020-10-15 00:09:22,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:22,697 INFO L225 Difference]: With dead ends: 105 [2020-10-15 00:09:22,697 INFO L226 Difference]: Without dead ends: 95 [2020-10-15 00:09:22,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=851, Invalid=3841, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 00:09:22,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-15 00:09:22,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2020-10-15 00:09:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-15 00:09:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2020-10-15 00:09:22,708 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 83 [2020-10-15 00:09:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:22,708 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2020-10-15 00:09:22,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-15 00:09:22,709 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2020-10-15 00:09:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 00:09:22,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:22,709 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 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 00:09:22,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-15 00:09:22,710 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:22,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:22,710 INFO L82 PathProgramCache]: Analyzing trace with hash -23191957, now seen corresponding path program 25 times [2020-10-15 00:09:22,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:22,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604485170] [2020-10-15 00:09:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:22,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:23,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 00:09:23,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:23,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-15 00:09:23,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:23,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-15 00:09:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 00:09:23,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:23,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:23,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:23,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:23,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:23,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:23,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:23,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:23,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:23,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:23,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:23,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:23,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:23,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:23,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:09:23,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:23,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-15 00:09:23,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:23,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:23,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:09:23,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:23,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:09:23,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:23,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 00:09:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:23,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:09:23,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:23,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-15 00:09:23,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:23,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:09:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:09:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:24,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604485170] [2020-10-15 00:09:24,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:24,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-15 00:09:24,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990518483] [2020-10-15 00:09:24,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-15 00:09:24,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:24,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-15 00:09:24,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:09:24,416 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand 38 states. [2020-10-15 00:09:27,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:27,154 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2020-10-15 00:09:27,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-15 00:09:27,155 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 85 [2020-10-15 00:09:27,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:27,157 INFO L225 Difference]: With dead ends: 120 [2020-10-15 00:09:27,157 INFO L226 Difference]: Without dead ends: 111 [2020-10-15 00:09:27,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=309, Invalid=4947, Unknown=0, NotChecked=0, Total=5256 [2020-10-15 00:09:27,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-15 00:09:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2020-10-15 00:09:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-15 00:09:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-15 00:09:27,168 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 85 [2020-10-15 00:09:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:27,169 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-15 00:09:27,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-15 00:09:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-15 00:09:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 00:09:27,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:27,170 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 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 00:09:27,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-15 00:09:27,170 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:27,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:27,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1225022375, now seen corresponding path program 24 times [2020-10-15 00:09:27,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:27,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508154252] [2020-10-15 00:09:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:27,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:27,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:27,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 00:09:27,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:27,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-15 00:09:27,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:27,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-15 00:09:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 00:09:27,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:27,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:27,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:27,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:27,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:27,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:27,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:27,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:27,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:27,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:27,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:27,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:27,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:27,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:09:27,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:27,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-15 00:09:27,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:27,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:09:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:09:27,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:28,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 00:09:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:28,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:28,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:28,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:09:28,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:28,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-15 00:09:28,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:28,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:09:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:09:28,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:28,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508154252] [2020-10-15 00:09:28,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:28,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-15 00:09:28,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941833105] [2020-10-15 00:09:28,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-15 00:09:28,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:28,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-15 00:09:28,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1303, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:09:28,773 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 38 states. [2020-10-15 00:09:31,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:31,180 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2020-10-15 00:09:31,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-15 00:09:31,181 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 85 [2020-10-15 00:09:31,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:31,182 INFO L225 Difference]: With dead ends: 119 [2020-10-15 00:09:31,182 INFO L226 Difference]: Without dead ends: 108 [2020-10-15 00:09:31,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1435 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=318, Invalid=5084, Unknown=0, NotChecked=0, Total=5402 [2020-10-15 00:09:31,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-15 00:09:31,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2020-10-15 00:09:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-15 00:09:31,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2020-10-15 00:09:31,196 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 85 [2020-10-15 00:09:31,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:31,196 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2020-10-15 00:09:31,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-15 00:09:31,196 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2020-10-15 00:09:31,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 00:09:31,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:31,197 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1, 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 00:09:31,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-15 00:09:31,197 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:31,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:31,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1712501011, now seen corresponding path program 26 times [2020-10-15 00:09:31,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:31,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843352751] [2020-10-15 00:09:31,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:31,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:31,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:31,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 00:09:31,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-15 00:09:31,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:31,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-15 00:09:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 00:09:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:31,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:31,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:31,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:31,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:31,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:31,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:31,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:31,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:31,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:31,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:31,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:31,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:31,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:31,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:31,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:31,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:09:31,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:31,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-15 00:09:31,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:31,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:31,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:09:31,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:31,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:09:31,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:32,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 00:09:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:32,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:32,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:32,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:32,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:09:32,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:32,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-15 00:09:32,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:32,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:32,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:09:32,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:32,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 00:09:32,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:32,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843352751] [2020-10-15 00:09:32,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:32,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-15 00:09:32,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005567969] [2020-10-15 00:09:32,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-15 00:09:32,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:32,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-15 00:09:32,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:09:32,891 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand 38 states. [2020-10-15 00:09:34,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:34,135 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-15 00:09:34,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-15 00:09:34,137 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 87 [2020-10-15 00:09:34,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:34,138 INFO L225 Difference]: With dead ends: 115 [2020-10-15 00:09:34,138 INFO L226 Difference]: Without dead ends: 103 [2020-10-15 00:09:34,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1624 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=969, Invalid=4287, Unknown=0, NotChecked=0, Total=5256 [2020-10-15 00:09:34,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-15 00:09:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2020-10-15 00:09:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-15 00:09:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-15 00:09:34,151 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 87 [2020-10-15 00:09:34,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:34,152 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-15 00:09:34,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-15 00:09:34,152 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-15 00:09:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 00:09:34,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:34,153 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1, 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 00:09:34,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-15 00:09:34,153 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:34,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:34,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1485509115, now seen corresponding path program 25 times [2020-10-15 00:09:34,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:34,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056984545] [2020-10-15 00:09:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:34,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:34,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:34,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 00:09:34,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:34,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-15 00:09:34,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:34,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:34,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-15 00:09:34,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:34,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 00:09:34,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:34,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:34,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:34,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:34,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:34,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:34,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:34,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:34,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:34,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:34,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:34,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:34,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:34,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:34,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:34,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:34,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:34,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:09:34,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:34,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-15 00:09:34,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:34,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:09:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:09:34,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:35,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 00:09:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:35,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:35,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:09:35,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 00:09:35,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:35,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:09:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:09:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:35,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056984545] [2020-10-15 00:09:35,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:35,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-15 00:09:35,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374755300] [2020-10-15 00:09:35,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-15 00:09:35,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:35,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-15 00:09:35,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:09:35,965 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 38 states. [2020-10-15 00:09:37,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:37,213 INFO L93 Difference]: Finished difference Result 109 states and 112 transitions. [2020-10-15 00:09:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-15 00:09:37,214 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 87 [2020-10-15 00:09:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:37,215 INFO L225 Difference]: With dead ends: 109 [2020-10-15 00:09:37,215 INFO L226 Difference]: Without dead ends: 99 [2020-10-15 00:09:37,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=969, Invalid=4287, Unknown=0, NotChecked=0, Total=5256 [2020-10-15 00:09:37,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-15 00:09:37,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-10-15 00:09:37,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-15 00:09:37,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-10-15 00:09:37,228 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 87 [2020-10-15 00:09:37,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:37,229 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-10-15 00:09:37,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-15 00:09:37,229 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-10-15 00:09:37,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 00:09:37,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:37,230 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 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 00:09:37,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-15 00:09:37,230 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:37,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:37,231 INFO L82 PathProgramCache]: Analyzing trace with hash 511885771, now seen corresponding path program 27 times [2020-10-15 00:09:37,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:37,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205660372] [2020-10-15 00:09:37,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:37,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:37,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:37,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 00:09:37,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:37,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-15 00:09:37,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:37,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-15 00:09:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 00:09:37,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:37,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:37,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:37,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:37,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:37,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:37,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:37,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:37,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:37,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:37,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:37,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:37,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:37,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:37,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:37,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:37,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:09:37,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:37,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 00:09:37,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:37,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:09:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:09:37,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:38,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 00:09:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:38,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:38,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:38,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:09:38,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:38,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-15 00:09:38,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:38,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:09:38,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:38,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 00:09:38,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:39,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205660372] [2020-10-15 00:09:39,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:39,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-15 00:09:39,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131974052] [2020-10-15 00:09:39,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-15 00:09:39,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:39,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-15 00:09:39,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1451, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:09:39,018 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 40 states. [2020-10-15 00:09:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:41,498 INFO L93 Difference]: Finished difference Result 128 states and 136 transitions. [2020-10-15 00:09:41,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-15 00:09:41,500 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 89 [2020-10-15 00:09:41,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:41,501 INFO L225 Difference]: With dead ends: 128 [2020-10-15 00:09:41,501 INFO L226 Difference]: Without dead ends: 119 [2020-10-15 00:09:41,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1610 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=336, Invalid=5670, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 00:09:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-15 00:09:41,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2020-10-15 00:09:41,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-15 00:09:41,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-15 00:09:41,512 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 89 [2020-10-15 00:09:41,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:41,513 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-15 00:09:41,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-15 00:09:41,513 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-15 00:09:41,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 00:09:41,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:41,513 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 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 00:09:41,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-15 00:09:41,514 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:41,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:41,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1770989447, now seen corresponding path program 26 times [2020-10-15 00:09:41,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:41,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838140613] [2020-10-15 00:09:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:41,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:41,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 00:09:41,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:41,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-15 00:09:41,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:41,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-15 00:09:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 00:09:41,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:41,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:41,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:41,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:41,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:41,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:41,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:41,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:41,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:41,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:09:41,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:41,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-15 00:09:41,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:41,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:09:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:09:41,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:42,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 00:09:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:42,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:42,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:09:42,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:42,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-15 00:09:42,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:42,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:42,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:09:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 00:09:42,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:43,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838140613] [2020-10-15 00:09:43,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:43,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-15 00:09:43,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861988852] [2020-10-15 00:09:43,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-15 00:09:43,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:43,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-15 00:09:43,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1451, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:09:43,359 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 40 states. [2020-10-15 00:09:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:45,954 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2020-10-15 00:09:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-15 00:09:45,955 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 89 [2020-10-15 00:09:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:45,956 INFO L225 Difference]: With dead ends: 123 [2020-10-15 00:09:45,956 INFO L226 Difference]: Without dead ends: 112 [2020-10-15 00:09:45,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1610 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=336, Invalid=5670, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 00:09:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-15 00:09:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 104. [2020-10-15 00:09:45,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-15 00:09:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2020-10-15 00:09:45,972 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 89 [2020-10-15 00:09:45,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:45,972 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2020-10-15 00:09:45,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-15 00:09:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2020-10-15 00:09:45,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 00:09:45,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:45,973 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1, 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 00:09:45,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-15 00:09:45,973 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:45,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:45,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1396087373, now seen corresponding path program 28 times [2020-10-15 00:09:45,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:45,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669372549] [2020-10-15 00:09:45,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:45,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:46,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 00:09:46,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:46,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-15 00:09:46,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:46,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-15 00:09:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-15 00:09:46,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:46,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:46,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:46,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:46,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:46,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:46,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:46,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:46,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:46,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:46,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:46,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:09:46,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:46,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-15 00:09:46,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:46,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:46,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:09:46,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:46,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:09:46,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:47,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 00:09:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:47,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:47,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:47,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:47,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 00:09:47,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:47,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-15 00:09:47,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:47,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:47,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:09:47,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:47,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 00:09:47,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 225 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:48,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669372549] [2020-10-15 00:09:48,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:48,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-15 00:09:48,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531502550] [2020-10-15 00:09:48,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-15 00:09:48,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:48,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-15 00:09:48,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:09:48,073 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand 40 states. [2020-10-15 00:09:50,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:50,542 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-15 00:09:50,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-15 00:09:50,543 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 91 [2020-10-15 00:09:50,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:50,544 INFO L225 Difference]: With dead ends: 119 [2020-10-15 00:09:50,544 INFO L226 Difference]: Without dead ends: 107 [2020-10-15 00:09:50,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1047, Invalid=4805, Unknown=0, NotChecked=0, Total=5852 [2020-10-15 00:09:50,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-15 00:09:50,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2020-10-15 00:09:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-15 00:09:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-15 00:09:50,559 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 91 [2020-10-15 00:09:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:50,559 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-15 00:09:50,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-15 00:09:50,560 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-15 00:09:50,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 00:09:50,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:50,561 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1, 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 00:09:50,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-15 00:09:50,561 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:50,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:50,561 INFO L82 PathProgramCache]: Analyzing trace with hash 512973541, now seen corresponding path program 27 times [2020-10-15 00:09:50,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:50,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123248616] [2020-10-15 00:09:50,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:50,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:51,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 00:09:51,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:51,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 866 [2020-10-15 00:09:51,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:51,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:51,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-15 00:09:51,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:51,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 00:09:51,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:51,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:51,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:51,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:51,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:51,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:51,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:51,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:51,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:51,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:51,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:51,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:51,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 00:09:51,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:09:51,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-15 00:09:51,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:51,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:51,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:09:51,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:51,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 00:09:51,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:51,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 00:09:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:51,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:52,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:52,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:09:52,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:52,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-15 00:09:52,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:52,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:09:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:52,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 00:09:52,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 225 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:52,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123248616] [2020-10-15 00:09:52,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:52,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-15 00:09:52,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12253784] [2020-10-15 00:09:52,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-15 00:09:52,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:52,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-15 00:09:52,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1227, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:09:52,751 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 40 states. [2020-10-15 00:09:54,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:54,222 INFO L93 Difference]: Finished difference Result 113 states and 116 transitions. [2020-10-15 00:09:54,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-15 00:09:54,223 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 91 [2020-10-15 00:09:54,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:54,224 INFO L225 Difference]: With dead ends: 113 [2020-10-15 00:09:54,224 INFO L226 Difference]: Without dead ends: 103 [2020-10-15 00:09:54,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1520 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1063, Invalid=4789, Unknown=0, NotChecked=0, Total=5852 [2020-10-15 00:09:54,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-15 00:09:54,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2020-10-15 00:09:54,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-15 00:09:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2020-10-15 00:09:54,239 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 91 [2020-10-15 00:09:54,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:54,240 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2020-10-15 00:09:54,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-15 00:09:54,240 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2020-10-15 00:09:54,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 00:09:54,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:54,241 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 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 00:09:54,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-15 00:09:54,241 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:54,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:54,242 INFO L82 PathProgramCache]: Analyzing trace with hash -671388117, now seen corresponding path program 29 times [2020-10-15 00:09:54,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:54,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219441561] [2020-10-15 00:09:54,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:54,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:54,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:54,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 00:09:54,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:54,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-15 00:09:54,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:54,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-15 00:09:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 00:09:54,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:54,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:54,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:54,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:54,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:54,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:54,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:54,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:54,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:54,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:54,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:54,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:54,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:54,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 00:09:54,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:54,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-15 00:09:54,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:54,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:09:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 00:09:54,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:55,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 00:09:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:55,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:55,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:55,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 00:09:55,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:55,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-15 00:09:55,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:55,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:09:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 00:09:55,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:56,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219441561] [2020-10-15 00:09:56,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:56,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-15 00:09:56,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218448713] [2020-10-15 00:09:56,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-15 00:09:56,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:56,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-15 00:09:56,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1607, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:09:56,365 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand 42 states. [2020-10-15 00:09:59,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:59,269 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2020-10-15 00:09:59,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-15 00:09:59,270 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 93 [2020-10-15 00:09:59,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:59,272 INFO L225 Difference]: With dead ends: 132 [2020-10-15 00:09:59,272 INFO L226 Difference]: Without dead ends: 123 [2020-10-15 00:09:59,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=354, Invalid=6288, Unknown=0, NotChecked=0, Total=6642 [2020-10-15 00:09:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-15 00:09:59,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2020-10-15 00:09:59,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-15 00:09:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-15 00:09:59,285 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 93 [2020-10-15 00:09:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:59,286 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-15 00:09:59,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-15 00:09:59,286 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-15 00:09:59,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 00:09:59,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:59,287 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 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 00:09:59,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-15 00:09:59,287 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:59,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:59,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1832526745, now seen corresponding path program 28 times [2020-10-15 00:09:59,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:59,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313868996] [2020-10-15 00:09:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:59,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:59,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 00:09:59,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:59,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-10-15 00:09:59,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:59,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-15 00:09:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:09:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 00:09:59,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:59,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:59,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:59,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:59,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:59,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:09:59,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:59,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:59,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:59,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:59,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:59,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:59,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 00:09:59,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:59,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-15 00:09:59,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:59,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:59,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:09:59,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:59,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 00:09:59,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:00,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 00:10:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:00,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:00,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 00:10:00,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:00,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 00:10:00,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:00,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:00,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:10:00,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:00,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 00:10:00,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:01,552 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:10:01,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313868996] [2020-10-15 00:10:01,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:01,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-15 00:10:01,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181445272] [2020-10-15 00:10:01,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-15 00:10:01,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:01,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-15 00:10:01,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1607, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:10:01,554 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 42 states. [2020-10-15 00:10:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:04,923 INFO L93 Difference]: Finished difference Result 127 states and 134 transitions. [2020-10-15 00:10:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-15 00:10:04,924 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 93 [2020-10-15 00:10:04,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:04,926 INFO L225 Difference]: With dead ends: 127 [2020-10-15 00:10:04,926 INFO L226 Difference]: Without dead ends: 116 [2020-10-15 00:10:04,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=354, Invalid=6288, Unknown=0, NotChecked=0, Total=6642 [2020-10-15 00:10:04,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-15 00:10:04,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 108. [2020-10-15 00:10:04,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-15 00:10:04,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 113 transitions. [2020-10-15 00:10:04,943 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 113 transitions. Word has length 93 [2020-10-15 00:10:04,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:04,943 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 113 transitions. [2020-10-15 00:10:04,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-15 00:10:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 113 transitions. [2020-10-15 00:10:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 00:10:04,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:04,944 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1, 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 00:10:04,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-15 00:10:04,945 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:04,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1858752851, now seen corresponding path program 30 times [2020-10-15 00:10:04,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:04,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320935355] [2020-10-15 00:10:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:04,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:05,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:05,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:05,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 00:10:05,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:10:05,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 984 [2020-10-15 00:10:05,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:05,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:05,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-15 00:10:05,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:10:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 00:10:05,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:05,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:05,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:05,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:05,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:10:05,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:05,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:05,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:05,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:05,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:05,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:05,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:05,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:06,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:06,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 00:10:06,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-15 00:10:06,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:06,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:10:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 00:10:06,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:10:06,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 00:10:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:06,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:06,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:06,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:10:06,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:10:06,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-15 00:10:06,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:06,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:10:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:10:06,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 256 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:10:07,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320935355] [2020-10-15 00:10:07,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:07,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-15 00:10:07,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109841996] [2020-10-15 00:10:07,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-15 00:10:07,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:07,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-15 00:10:07,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1335, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:10:07,175 INFO L87 Difference]: Start difference. First operand 108 states and 113 transitions. Second operand 42 states. [2020-10-15 00:10:08,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:08,663 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2020-10-15 00:10:08,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-15 00:10:08,665 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 95 [2020-10-15 00:10:08,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:08,666 INFO L225 Difference]: With dead ends: 123 [2020-10-15 00:10:08,667 INFO L226 Difference]: Without dead ends: 111 [2020-10-15 00:10:08,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2044 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1195, Invalid=5285, Unknown=0, NotChecked=0, Total=6480 [2020-10-15 00:10:08,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-15 00:10:08,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2020-10-15 00:10:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-15 00:10:08,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-15 00:10:08,680 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 95 [2020-10-15 00:10:08,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:08,680 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-15 00:10:08,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-15 00:10:08,680 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-15 00:10:08,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 00:10:08,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:08,681 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1, 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 00:10:08,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-15 00:10:08,681 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:08,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:08,682 INFO L82 PathProgramCache]: Analyzing trace with hash -106614587, now seen corresponding path program 29 times [2020-10-15 00:10:08,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:08,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724315681] [2020-10-15 00:10:08,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:08,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:08,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:09,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 00:10:09,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:10:09,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 768 [2020-10-15 00:10:09,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:09,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-15 00:10:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:10:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 00:10:09,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:09,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:09,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:09,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:09,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:09,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:09,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:09,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:09,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:09,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:09,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:10:09,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:10:09,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-15 00:10:09,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:09,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:10:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 00:10:09,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:10,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 00:10:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:10,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:10,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:10,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 00:10:10,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-15 00:10:10,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:10,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:10:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 00:10:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:10:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 256 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:10:10,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724315681] [2020-10-15 00:10:10,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:10,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-15 00:10:10,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889575009] [2020-10-15 00:10:10,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-15 00:10:10,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:10,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-15 00:10:10,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1352, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:10:10,979 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 42 states. [2020-10-15 00:10:12,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:12,493 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2020-10-15 00:10:12,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-15 00:10:12,494 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 95 [2020-10-15 00:10:12,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:12,496 INFO L225 Difference]: With dead ends: 117 [2020-10-15 00:10:12,496 INFO L226 Difference]: Without dead ends: 107 [2020-10-15 00:10:12,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1178, Invalid=5302, Unknown=0, NotChecked=0, Total=6480 [2020-10-15 00:10:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-15 00:10:12,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2020-10-15 00:10:12,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-15 00:10:12,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2020-10-15 00:10:12,509 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 95 [2020-10-15 00:10:12,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:12,509 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2020-10-15 00:10:12,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-15 00:10:12,509 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2020-10-15 00:10:12,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 00:10:12,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:12,510 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 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 00:10:12,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-15 00:10:12,510 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:12,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:12,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1114545269, now seen corresponding path program 31 times [2020-10-15 00:10:12,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:12,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411244620] [2020-10-15 00:10:12,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:12,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:12,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:12,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 00:10:12,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:12,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-15 00:10:12,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:12,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-15 00:10:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:10:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 00:10:12,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:12,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:12,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:12,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:12,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:12,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:12,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:10:12,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:12,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:12,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:10:12,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:12,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:13,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:13,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:10:13,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:13,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-15 00:10:13,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:13,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:13,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:10:13,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:13,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 00:10:13,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:13,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 00:10:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:13,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:13,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:13,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:10:13,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:13,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-15 00:10:13,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:13,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:10:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:10:13,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:10:14,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411244620] [2020-10-15 00:10:14,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:14,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-15 00:10:14,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413996348] [2020-10-15 00:10:14,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-15 00:10:14,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:14,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-15 00:10:14,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1771, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 00:10:14,696 INFO L87 Difference]: Start difference. First operand 106 states and 109 transitions. Second operand 44 states. [2020-10-15 00:10:17,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:17,986 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2020-10-15 00:10:17,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-15 00:10:17,987 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 97 [2020-10-15 00:10:17,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:17,989 INFO L225 Difference]: With dead ends: 136 [2020-10-15 00:10:17,989 INFO L226 Difference]: Without dead ends: 127 [2020-10-15 00:10:17,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1990 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=372, Invalid=6938, Unknown=0, NotChecked=0, Total=7310 [2020-10-15 00:10:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-15 00:10:18,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2020-10-15 00:10:18,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-15 00:10:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-15 00:10:18,002 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 97 [2020-10-15 00:10:18,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:18,002 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-15 00:10:18,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-15 00:10:18,002 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-15 00:10:18,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 00:10:18,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:18,003 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 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 00:10:18,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-15 00:10:18,003 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:18,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:18,003 INFO L82 PathProgramCache]: Analyzing trace with hash -256263609, now seen corresponding path program 30 times [2020-10-15 00:10:18,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:18,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23784308] [2020-10-15 00:10:18,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:18,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:18,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:18,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 00:10:18,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:18,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-15 00:10:18,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:18,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-15 00:10:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:10:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 00:10:18,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:18,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:18,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:18,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:18,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:18,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:18,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:10:18,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:18,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:18,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:18,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:18,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:18,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:10:18,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:18,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-15 00:10:18,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:18,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:18,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:10:18,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:18,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 00:10:18,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:19,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 00:10:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:19,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:19,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:19,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:10:19,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:19,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-15 00:10:19,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:19,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:10:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:10:19,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:10:20,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23784308] [2020-10-15 00:10:20,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:20,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-15 00:10:20,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589931022] [2020-10-15 00:10:20,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-15 00:10:20,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:20,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-15 00:10:20,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1771, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 00:10:20,193 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 44 states. [2020-10-15 00:10:23,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:23,162 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2020-10-15 00:10:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-15 00:10:23,163 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 97 [2020-10-15 00:10:23,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:23,164 INFO L225 Difference]: With dead ends: 131 [2020-10-15 00:10:23,164 INFO L226 Difference]: Without dead ends: 120 [2020-10-15 00:10:23,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1990 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=372, Invalid=6938, Unknown=0, NotChecked=0, Total=7310 [2020-10-15 00:10:23,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-15 00:10:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2020-10-15 00:10:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-15 00:10:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 117 transitions. [2020-10-15 00:10:23,182 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 117 transitions. Word has length 97 [2020-10-15 00:10:23,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:23,182 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 117 transitions. [2020-10-15 00:10:23,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-15 00:10:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 117 transitions. [2020-10-15 00:10:23,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 00:10:23,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:23,183 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1, 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 00:10:23,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-15 00:10:23,184 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:23,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:23,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1763953677, now seen corresponding path program 32 times [2020-10-15 00:10:23,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:23,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102274849] [2020-10-15 00:10:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:24,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:24,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 00:10:24,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:10:24,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 823 [2020-10-15 00:10:24,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:24,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:24,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-15 00:10:24,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:10:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 00:10:24,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:24,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:24,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:24,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:24,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:24,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:24,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:10:24,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:24,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:24,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:24,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:24,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:24,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:24,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:24,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:10:24,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:24,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-15 00:10:24,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:24,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:10:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 00:10:24,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:24,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 00:10:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:24,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:24,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:24,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:10:24,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:10:24,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-15 00:10:24,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:24,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:10:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 00:10:24,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 289 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:10:25,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102274849] [2020-10-15 00:10:25,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:25,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-15 00:10:25,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132888301] [2020-10-15 00:10:25,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-15 00:10:25,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:25,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-15 00:10:25,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=1465, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 00:10:25,448 INFO L87 Difference]: Start difference. First operand 112 states and 117 transitions. Second operand 44 states. [2020-10-15 00:10:27,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:27,683 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2020-10-15 00:10:27,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-15 00:10:27,683 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 99 [2020-10-15 00:10:27,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:27,685 INFO L225 Difference]: With dead ends: 127 [2020-10-15 00:10:27,685 INFO L226 Difference]: Without dead ends: 115 [2020-10-15 00:10:27,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2272 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1317, Invalid=5823, Unknown=0, NotChecked=0, Total=7140 [2020-10-15 00:10:27,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-15 00:10:27,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2020-10-15 00:10:27,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-15 00:10:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-15 00:10:27,699 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 99 [2020-10-15 00:10:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:27,699 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-15 00:10:27,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-15 00:10:27,700 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-15 00:10:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 00:10:27,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:27,700 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1, 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 00:10:27,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-15 00:10:27,701 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:27,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:27,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1962651557, now seen corresponding path program 31 times [2020-10-15 00:10:27,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:27,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813294340] [2020-10-15 00:10:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:27,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:28,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 00:10:28,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:10:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-10-15 00:10:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:28,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-15 00:10:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:10:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 00:10:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:28,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:28,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:28,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:28,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:10:28,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:28,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:28,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:10:28,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:28,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:28,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:10:28,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:10:28,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-15 00:10:28,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:28,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:10:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 00:10:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:29,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-15 00:10:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:29,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:29,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:29,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:10:29,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:29,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-15 00:10:29,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:29,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:10:29,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:29,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:10:29,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 289 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:10:30,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813294340] [2020-10-15 00:10:30,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:30,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-15 00:10:30,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806296449] [2020-10-15 00:10:30,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-15 00:10:30,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:30,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-15 00:10:30,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=1465, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 00:10:30,134 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 44 states. [2020-10-15 00:10:32,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:32,140 INFO L93 Difference]: Finished difference Result 121 states and 124 transitions. [2020-10-15 00:10:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-15 00:10:32,141 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 99 [2020-10-15 00:10:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:32,141 INFO L225 Difference]: With dead ends: 121 [2020-10-15 00:10:32,142 INFO L226 Difference]: Without dead ends: 111 [2020-10-15 00:10:32,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1932 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1317, Invalid=5823, Unknown=0, NotChecked=0, Total=7140 [2020-10-15 00:10:32,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-15 00:10:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2020-10-15 00:10:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-15 00:10:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 113 transitions. [2020-10-15 00:10:32,154 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 113 transitions. Word has length 99 [2020-10-15 00:10:32,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:32,154 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 113 transitions. [2020-10-15 00:10:32,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-15 00:10:32,154 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 113 transitions. [2020-10-15 00:10:32,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 00:10:32,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:32,155 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 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 00:10:32,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-15 00:10:32,156 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:32,156 INFO L82 PathProgramCache]: Analyzing trace with hash -457317909, now seen corresponding path program 33 times [2020-10-15 00:10:32,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:32,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961885591] [2020-10-15 00:10:32,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:32,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:32,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:32,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 00:10:32,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:32,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-15 00:10:32,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:32,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-15 00:10:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:10:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 00:10:32,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:32,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:32,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:32,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:32,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:32,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:32,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:10:32,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:32,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:32,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:32,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:32,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:32,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:10:32,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:32,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-15 00:10:32,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:32,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:10:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 00:10:32,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:33,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-15 00:10:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:33,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:33,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:33,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:10:33,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:33,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-15 00:10:33,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:33,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:10:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 00:10:33,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:10:34,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961885591] [2020-10-15 00:10:34,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:34,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-15 00:10:34,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545838869] [2020-10-15 00:10:34,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-15 00:10:34,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:34,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-15 00:10:34,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1943, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:10:34,916 INFO L87 Difference]: Start difference. First operand 110 states and 113 transitions. Second operand 46 states. [2020-10-15 00:10:38,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:38,172 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2020-10-15 00:10:38,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-15 00:10:38,174 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 101 [2020-10-15 00:10:38,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:38,175 INFO L225 Difference]: With dead ends: 140 [2020-10-15 00:10:38,175 INFO L226 Difference]: Without dead ends: 131 [2020-10-15 00:10:38,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2195 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=390, Invalid=7620, Unknown=0, NotChecked=0, Total=8010 [2020-10-15 00:10:38,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-15 00:10:38,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 113. [2020-10-15 00:10:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-15 00:10:38,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-15 00:10:38,192 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 101 [2020-10-15 00:10:38,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:38,192 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-15 00:10:38,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-15 00:10:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-15 00:10:38,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 00:10:38,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:38,193 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 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 00:10:38,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-15 00:10:38,194 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:38,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:38,194 INFO L82 PathProgramCache]: Analyzing trace with hash -261357273, now seen corresponding path program 32 times [2020-10-15 00:10:38,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:38,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518007957] [2020-10-15 00:10:38,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:38,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:38,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:38,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 00:10:38,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-15 00:10:38,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:38,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-15 00:10:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:10:38,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 00:10:38,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:38,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:38,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:38,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:38,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:38,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:10:38,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:38,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:38,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:38,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:38,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:38,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:38,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:10:38,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:38,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-15 00:10:38,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:38,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:38,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:10:38,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:38,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 00:10:38,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:39,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-15 00:10:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:39,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:39,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:39,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:10:39,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:39,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-15 00:10:39,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:39,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:10:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 00:10:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:10:40,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518007957] [2020-10-15 00:10:40,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:40,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-15 00:10:40,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746688746] [2020-10-15 00:10:40,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-15 00:10:40,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:40,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-15 00:10:40,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1943, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:10:40,638 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand 46 states. [2020-10-15 00:10:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:43,739 INFO L93 Difference]: Finished difference Result 135 states and 142 transitions. [2020-10-15 00:10:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-15 00:10:43,740 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 101 [2020-10-15 00:10:43,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:43,741 INFO L225 Difference]: With dead ends: 135 [2020-10-15 00:10:43,741 INFO L226 Difference]: Without dead ends: 124 [2020-10-15 00:10:43,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2195 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=390, Invalid=7620, Unknown=0, NotChecked=0, Total=8010 [2020-10-15 00:10:43,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-15 00:10:43,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2020-10-15 00:10:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-15 00:10:43,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2020-10-15 00:10:43,760 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 101 [2020-10-15 00:10:43,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:43,760 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2020-10-15 00:10:43,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-15 00:10:43,760 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2020-10-15 00:10:43,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 00:10:43,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:43,761 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1, 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 00:10:43,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-15 00:10:43,761 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:43,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:43,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1999254125, now seen corresponding path program 34 times [2020-10-15 00:10:43,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:43,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384134956] [2020-10-15 00:10:43,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:43,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:44,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:44,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:44,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 00:10:44,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:10:44,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1126 [2020-10-15 00:10:44,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:44,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:44,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-15 00:10:44,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:10:44,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 00:10:44,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:44,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:44,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:44,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:44,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:44,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:44,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:10:44,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:44,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:44,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:44,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:44,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:44,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:44,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:45,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:45,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:10:45,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:45,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-15 00:10:45,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:45,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:10:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 00:10:45,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-15 00:10:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:45,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:45,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:45,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:45,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:10:45,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:10:45,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-15 00:10:45,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:45,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:10:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 00:10:45,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 324 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:10:46,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384134956] [2020-10-15 00:10:46,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:46,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-15 00:10:46,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98350760] [2020-10-15 00:10:46,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-15 00:10:46,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:46,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-15 00:10:46,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=1601, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:10:46,403 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand 46 states. [2020-10-15 00:10:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:48,216 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2020-10-15 00:10:48,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-15 00:10:48,218 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 103 [2020-10-15 00:10:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:48,220 INFO L225 Difference]: With dead ends: 131 [2020-10-15 00:10:48,220 INFO L226 Difference]: Without dead ends: 119 [2020-10-15 00:10:48,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2512 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1445, Invalid=6387, Unknown=0, NotChecked=0, Total=7832 [2020-10-15 00:10:48,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-15 00:10:48,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2020-10-15 00:10:48,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-15 00:10:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2020-10-15 00:10:48,240 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 103 [2020-10-15 00:10:48,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:48,240 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2020-10-15 00:10:48,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-15 00:10:48,240 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2020-10-15 00:10:48,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 00:10:48,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:48,241 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1, 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 00:10:48,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-15 00:10:48,241 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:48,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:48,242 INFO L82 PathProgramCache]: Analyzing trace with hash -304605307, now seen corresponding path program 33 times [2020-10-15 00:10:48,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:48,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050265173] [2020-10-15 00:10:48,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:48,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:48,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:49,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 00:10:49,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:10:49,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-15 00:10:49,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:49,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-15 00:10:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:10:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 00:10:49,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:49,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:49,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:49,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:49,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:10:49,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:49,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:49,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:49,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:49,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:10:49,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:10:49,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-15 00:10:49,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:49,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:49,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:10:49,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:49,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 00:10:49,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:50,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 00:10:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:50,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:50,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:50,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:10:50,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:50,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-15 00:10:50,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:50,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:10:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 00:10:50,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 324 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:10:51,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050265173] [2020-10-15 00:10:51,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:51,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-15 00:10:51,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357240757] [2020-10-15 00:10:51,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-15 00:10:51,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:51,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-15 00:10:51,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=1601, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:10:51,066 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand 46 states. [2020-10-15 00:10:52,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:52,893 INFO L93 Difference]: Finished difference Result 125 states and 128 transitions. [2020-10-15 00:10:52,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-15 00:10:52,894 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 103 [2020-10-15 00:10:52,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:52,895 INFO L225 Difference]: With dead ends: 125 [2020-10-15 00:10:52,895 INFO L226 Difference]: Without dead ends: 115 [2020-10-15 00:10:52,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2134 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1445, Invalid=6387, Unknown=0, NotChecked=0, Total=7832 [2020-10-15 00:10:52,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-15 00:10:52,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2020-10-15 00:10:52,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-15 00:10:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2020-10-15 00:10:52,914 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 103 [2020-10-15 00:10:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:52,915 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2020-10-15 00:10:52,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-15 00:10:52,915 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2020-10-15 00:10:52,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 00:10:52,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:52,916 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 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 00:10:52,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-15 00:10:52,916 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:52,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:52,916 INFO L82 PathProgramCache]: Analyzing trace with hash -907400885, now seen corresponding path program 35 times [2020-10-15 00:10:52,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:52,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949684331] [2020-10-15 00:10:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:53,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:53,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 00:10:53,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-15 00:10:53,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:53,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-15 00:10:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:10:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 00:10:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:53,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:53,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:53,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:53,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:53,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:53,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:10:53,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:53,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:53,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:53,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:53,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:53,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:10:53,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:53,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-15 00:10:53,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:53,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:53,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:10:53,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:53,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 00:10:53,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:54,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 00:10:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:54,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:54,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:10:54,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:54,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-15 00:10:54,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:54,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:10:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 00:10:54,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:56,121 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:10:56,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949684331] [2020-10-15 00:10:56,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:56,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-15 00:10:56,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379981190] [2020-10-15 00:10:56,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-15 00:10:56,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:56,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-15 00:10:56,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=2143, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 00:10:56,123 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand 48 states. [2020-10-15 00:11:01,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:01,522 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2020-10-15 00:11:01,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-15 00:11:01,523 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 105 [2020-10-15 00:11:01,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:01,524 INFO L225 Difference]: With dead ends: 144 [2020-10-15 00:11:01,524 INFO L226 Difference]: Without dead ends: 135 [2020-10-15 00:11:01,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=388, Invalid=8354, Unknown=0, NotChecked=0, Total=8742 [2020-10-15 00:11:01,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-15 00:11:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 117. [2020-10-15 00:11:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-15 00:11:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2020-10-15 00:11:01,542 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 105 [2020-10-15 00:11:01,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:01,542 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2020-10-15 00:11:01,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-15 00:11:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2020-10-15 00:11:01,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 00:11:01,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:01,543 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 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 00:11:01,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-15 00:11:01,544 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:01,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:01,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1546784505, now seen corresponding path program 34 times [2020-10-15 00:11:01,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:01,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474599015] [2020-10-15 00:11:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:01,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:02,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:02,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 00:11:02,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:02,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-15 00:11:02,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:02,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-15 00:11:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:11:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 00:11:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:02,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:02,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:02,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:02,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:02,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:02,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:11:02,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:02,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:02,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:02,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:11:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:02,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:02,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:02,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:11:02,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:02,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-15 00:11:02,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:02,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:11:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 00:11:02,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:02,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 00:11:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:02,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:03,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:03,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:11:03,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:03,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-15 00:11:03,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:03,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:11:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:11:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 00:11:03,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:11:04,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474599015] [2020-10-15 00:11:04,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:04,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-15 00:11:04,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629940038] [2020-10-15 00:11:04,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-15 00:11:04,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:04,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-15 00:11:04,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=2143, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 00:11:04,844 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand 48 states. [2020-10-15 00:11:11,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:11,014 INFO L93 Difference]: Finished difference Result 139 states and 146 transitions. [2020-10-15 00:11:11,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-15 00:11:11,015 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 105 [2020-10-15 00:11:11,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:11,016 INFO L225 Difference]: With dead ends: 139 [2020-10-15 00:11:11,016 INFO L226 Difference]: Without dead ends: 128 [2020-10-15 00:11:11,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=388, Invalid=8354, Unknown=0, NotChecked=0, Total=8742 [2020-10-15 00:11:11,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-15 00:11:11,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 120. [2020-10-15 00:11:11,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-15 00:11:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2020-10-15 00:11:11,032 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 105 [2020-10-15 00:11:11,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:11,033 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2020-10-15 00:11:11,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-15 00:11:11,033 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2020-10-15 00:11:11,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 00:11:11,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:11,034 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1, 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 00:11:11,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-15 00:11:11,034 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:11,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:11,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1033756211, now seen corresponding path program 36 times [2020-10-15 00:11:11,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:11,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566886409] [2020-10-15 00:11:11,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:11,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:12,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 00:11:12,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:11:12,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-10-15 00:11:12,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:12,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-15 00:11:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:11:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 00:11:12,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:12,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:12,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:12,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:12,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:12,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:11:12,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:12,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:12,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:12,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:12,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:12,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:12,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:11:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:12,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:12,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:11:12,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:12,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-15 00:11:12,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:12,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:12,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:11:12,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 00:11:12,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:12,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 00:11:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:12,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:13,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:13,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:13,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 00:11:13,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:11:13,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-15 00:11:13,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:13,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:11:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:11:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 00:11:13,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 361 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:11:14,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566886409] [2020-10-15 00:11:14,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:14,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-15 00:11:14,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293906379] [2020-10-15 00:11:14,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-15 00:11:14,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:14,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-15 00:11:14,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=1743, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 00:11:14,011 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand 48 states. [2020-10-15 00:11:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:16,903 INFO L93 Difference]: Finished difference Result 135 states and 140 transitions. [2020-10-15 00:11:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-15 00:11:16,904 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 107 [2020-10-15 00:11:16,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:16,905 INFO L225 Difference]: With dead ends: 135 [2020-10-15 00:11:16,905 INFO L226 Difference]: Without dead ends: 123 [2020-10-15 00:11:16,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2764 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1579, Invalid=6977, Unknown=0, NotChecked=0, Total=8556 [2020-10-15 00:11:16,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-15 00:11:16,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2020-10-15 00:11:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-15 00:11:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2020-10-15 00:11:16,922 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 107 [2020-10-15 00:11:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:16,922 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2020-10-15 00:11:16,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-15 00:11:16,922 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2020-10-15 00:11:16,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 00:11:16,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:16,923 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1, 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 00:11:16,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-15 00:11:16,924 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:16,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:16,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1181460581, now seen corresponding path program 35 times [2020-10-15 00:11:16,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:16,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438069580] [2020-10-15 00:11:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:16,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:17,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:17,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:17,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 00:11:17,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:11:17,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-10-15 00:11:17,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:17,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-15 00:11:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:11:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-15 00:11:17,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:17,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:17,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:17,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:17,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:17,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:17,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:11:17,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:17,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:17,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:17,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:11:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:17,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:17,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:18,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:18,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 00:11:18,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:11:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-15 00:11:18,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:18,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:11:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:11:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:18,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-15 00:11:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:19,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:19,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:11:19,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:19,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-15 00:11:19,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:19,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:11:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:11:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 00:11:19,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:20,141 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 361 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:11:20,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438069580] [2020-10-15 00:11:20,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:20,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-15 00:11:20,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275382931] [2020-10-15 00:11:20,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-15 00:11:20,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:20,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-15 00:11:20,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=1763, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 00:11:20,143 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand 48 states. [2020-10-15 00:11:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:23,692 INFO L93 Difference]: Finished difference Result 129 states and 132 transitions. [2020-10-15 00:11:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-15 00:11:23,692 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 107 [2020-10-15 00:11:23,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:23,693 INFO L225 Difference]: With dead ends: 129 [2020-10-15 00:11:23,694 INFO L226 Difference]: Without dead ends: 119 [2020-10-15 00:11:23,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1559, Invalid=6997, Unknown=0, NotChecked=0, Total=8556 [2020-10-15 00:11:23,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-15 00:11:23,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2020-10-15 00:11:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-15 00:11:23,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 121 transitions. [2020-10-15 00:11:23,712 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 121 transitions. Word has length 107 [2020-10-15 00:11:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:23,712 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 121 transitions. [2020-10-15 00:11:23,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-15 00:11:23,712 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 121 transitions. [2020-10-15 00:11:23,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 00:11:23,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:23,713 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 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 00:11:23,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-15 00:11:23,713 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:23,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:23,713 INFO L82 PathProgramCache]: Analyzing trace with hash 879720875, now seen corresponding path program 37 times [2020-10-15 00:11:23,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:23,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720574028] [2020-10-15 00:11:23,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:24,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:24,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 00:11:24,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:24,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-15 00:11:24,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:24,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:24,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-15 00:11:24,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:11:24,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-15 00:11:24,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:24,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:24,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:24,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:24,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:24,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:24,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:11:24,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:24,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:24,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:11:24,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:11:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:24,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:24,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:24,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 00:11:24,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:24,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-15 00:11:24,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:24,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 00:11:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:11:24,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:25,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-15 00:11:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:25,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:25,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:25,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 00:11:25,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-15 00:11:25,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:25,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 00:11:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:11:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 00:11:25,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:11:26,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720574028] [2020-10-15 00:11:26,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:26,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-15 00:11:26,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427413403] [2020-10-15 00:11:26,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-15 00:11:26,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:26,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-15 00:11:26,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2311, Unknown=0, NotChecked=0, Total=2450 [2020-10-15 00:11:26,876 INFO L87 Difference]: Start difference. First operand 118 states and 121 transitions. Second operand 50 states.