/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/theatreSquare.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:33:54,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:33:54,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:33:54,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:33:54,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:33:54,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:33:54,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:33:54,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:33:54,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:33:54,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:33:54,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:33:54,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:33:54,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:33:54,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:33:54,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:33:54,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:33:54,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:33:54,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:33:54,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:33:54,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:33:54,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:33:54,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:33:54,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:33:54,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:33:54,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:33:54,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:33:54,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:33:54,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:33:54,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:33:54,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:33:54,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:33:54,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:33:54,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:33:54,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:33:54,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:33:54,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:33:54,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:33:54,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:33:54,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:33:54,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:33:54,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:33:54,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 05:33:54,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:33:54,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:33:54,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:33:54,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:33:54,518 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:33:54,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:33:54,519 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:33:54,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:33:54,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:33:54,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:33:54,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:33:54,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:33:54,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:33:54,521 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:33:54,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:33:54,521 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:33:54,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:33:54,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:33:54,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:33:54,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:33:54,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:33:54,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:33:54,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:33:54,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:33:54,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:33:54,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:33:54,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:33:54,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:33:54,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:33:54,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:33:54,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:33:54,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:33:54,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:33:54,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:33:54,826 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:33:54,826 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/theatreSquare.c [2020-10-14 05:33:54,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3964fda36/1d9d6ea8417a4560a2415715f3c1ae5f/FLAG5886d0de8 [2020-10-14 05:33:55,281 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:33:55,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/theatreSquare.c [2020-10-14 05:33:55,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3964fda36/1d9d6ea8417a4560a2415715f3c1ae5f/FLAG5886d0de8 [2020-10-14 05:33:55,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3964fda36/1d9d6ea8417a4560a2415715f3c1ae5f [2020-10-14 05:33:55,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:33:55,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:33:55,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:33:55,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:33:55,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:33:55,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:33:55" (1/1) ... [2020-10-14 05:33:55,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f77297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:55, skipping insertion in model container [2020-10-14 05:33:55,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:33:55" (1/1) ... [2020-10-14 05:33:55,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:33:55,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:33:55,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:33:55,881 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:33:55,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:33:55,922 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:33:55,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:55 WrapperNode [2020-10-14 05:33:55,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:33:55,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:33:55,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:33:55,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:33:56,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:55" (1/1) ... [2020-10-14 05:33:56,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:55" (1/1) ... [2020-10-14 05:33:56,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:55" (1/1) ... [2020-10-14 05:33:56,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:55" (1/1) ... [2020-10-14 05:33:56,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:55" (1/1) ... [2020-10-14 05:33:56,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:55" (1/1) ... [2020-10-14 05:33:56,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:55" (1/1) ... [2020-10-14 05:33:56,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:33:56,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:33:56,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:33:56,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:33:56,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:33:56,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:33:56,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:33:56,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:33:56,109 INFO L138 BoogieDeclarations]: Found implementation of procedure correct_version [2020-10-14 05:33:56,110 INFO L138 BoogieDeclarations]: Found implementation of procedure student_version [2020-10-14 05:33:56,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:33:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:33:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:33:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:33:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure correct_version [2020-10-14 05:33:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure student_version [2020-10-14 05:33:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:33:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:33:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:33:56,373 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:33:56,374 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-14 05:33:56,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:33:56 BoogieIcfgContainer [2020-10-14 05:33:56,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:33:56,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:33:56,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:33:56,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:33:56,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:33:55" (1/3) ... [2020-10-14 05:33:56,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bd9063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:33:56, skipping insertion in model container [2020-10-14 05:33:56,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:55" (2/3) ... [2020-10-14 05:33:56,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bd9063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:33:56, skipping insertion in model container [2020-10-14 05:33:56,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:33:56" (3/3) ... [2020-10-14 05:33:56,386 INFO L109 eAbstractionObserver]: Analyzing ICFG theatreSquare.c [2020-10-14 05:33:56,400 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:33:56,408 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:33:56,422 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:33:56,447 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:33:56,447 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:33:56,447 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:33:56,447 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:33:56,448 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:33:56,448 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:33:56,448 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:33:56,448 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:33:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-14 05:33:56,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 05:33:56,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:56,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:56,475 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:56,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:56,483 INFO L82 PathProgramCache]: Analyzing trace with hash -962826499, now seen corresponding path program 1 times [2020-10-14 05:33:56,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:56,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372217675] [2020-10-14 05:33:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:56,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:56,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:56,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:33:56,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:56,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 05:33:56,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:56,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:33:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:33:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:33:56,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:33:56,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:56,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:56,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:56,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:33:56,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:56,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:33:56,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:56,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:56,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:56,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372217675] [2020-10-14 05:33:56,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:33:56,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:33:56,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245180559] [2020-10-14 05:33:56,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:33:56,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:56,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:33:56,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:33:56,861 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-10-14 05:33:56,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:56,939 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2020-10-14 05:33:56,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:33:56,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-14 05:33:56,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:56,950 INFO L225 Difference]: With dead ends: 75 [2020-10-14 05:33:56,950 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 05:33:56,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:33:56,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 05:33:56,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-14 05:33:56,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 05:33:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-14 05:33:56,986 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 10 [2020-10-14 05:33:56,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:56,987 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-14 05:33:56,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:33:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-14 05:33:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 05:33:56,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:56,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:56,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:33:56,990 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:56,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:56,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1083365074, now seen corresponding path program 1 times [2020-10-14 05:33:56,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:56,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452941307] [2020-10-14 05:33:56,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:57,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:57,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:57,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:57,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:58,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:58,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 05:33:58,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:33:58,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1358 [2020-10-14 05:33:58,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:58,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:33:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:33:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:33:58,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:58,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:58,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:58,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:58,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:33:58,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:58,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:58,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:58,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:58,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:58,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:33:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:58,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:58,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:58,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 05:33:58,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:33:58,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:33:58,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:58,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:33:58,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:58,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 05:33:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:58,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:58,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:58,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 05:33:58,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:58,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:33:58,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:58,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:33:58,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:33:58,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:33:58,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:58,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452941307] [2020-10-14 05:33:58,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:33:58,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:33:58,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635874256] [2020-10-14 05:33:58,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:33:58,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:58,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:33:58,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:33:58,492 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-10-14 05:33:58,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:58,528 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-10-14 05:33:58,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:33:58,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-14 05:33:58,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:58,531 INFO L225 Difference]: With dead ends: 43 [2020-10-14 05:33:58,531 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 05:33:58,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:33:58,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 05:33:58,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-14 05:33:58,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 05:33:58,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-10-14 05:33:58,541 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 30 [2020-10-14 05:33:58,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:58,541 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-10-14 05:33:58,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:33:58,542 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-10-14 05:33:58,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 05:33:58,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:58,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:58,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:33:58,543 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:58,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:58,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1481509601, now seen corresponding path program 1 times [2020-10-14 05:33:58,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:58,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157374568] [2020-10-14 05:33:58,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:58,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:58,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:58,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:59,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:59,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 05:33:59,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:33:59,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1099 [2020-10-14 05:33:59,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:59,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:33:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:33:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:33:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:59,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:59,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:59,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:59,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:33:59,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:59,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:33:59,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:59,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:59,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:59,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:59,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:33:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:59,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:59,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:59,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:59,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 05:33:59,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:33:59,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:33:59,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:59,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:33:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:59,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 05:33:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:59,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:59,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:59,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:33:59,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:59,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:33:59,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:59,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:33:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:33:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:33:59,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 05:33:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:33:59,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157374568] [2020-10-14 05:33:59,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:33:59,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:33:59,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608149576] [2020-10-14 05:33:59,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:33:59,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:59,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:33:59,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:33:59,766 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2020-10-14 05:33:59,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:59,814 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-10-14 05:33:59,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:33:59,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-14 05:33:59,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:59,818 INFO L225 Difference]: With dead ends: 46 [2020-10-14 05:33:59,818 INFO L226 Difference]: Without dead ends: 33 [2020-10-14 05:33:59,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:33:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-14 05:33:59,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-14 05:33:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 05:33:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-14 05:33:59,833 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 31 [2020-10-14 05:33:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:59,835 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-14 05:33:59,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:33:59,835 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-14 05:33:59,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 05:33:59,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:59,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:59,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:33:59,837 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:59,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:59,838 INFO L82 PathProgramCache]: Analyzing trace with hash -552757405, now seen corresponding path program 1 times [2020-10-14 05:33:59,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:59,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091798550] [2020-10-14 05:33:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:59,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:59,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:59,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:59,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:59,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:00,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:01,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 05:34:01,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 05:34:01,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1481 [2020-10-14 05:34:01,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:01,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:34:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 05:34:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:34:01,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:01,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:01,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:01,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:01,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:01,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:01,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:01,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:01,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:01,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:01,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 05:34:01,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:01,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:34:01,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:01,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:01,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:01,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:01,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:01,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:01,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 05:34:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:01,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:01,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:34:01,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:01,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:34:01,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:01,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:34:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:34:01,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:34:01,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091798550] [2020-10-14 05:34:01,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:34:01,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:34:01,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827233851] [2020-10-14 05:34:01,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:34:01,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:01,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:34:01,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:34:01,429 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 5 states. [2020-10-14 05:34:01,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:01,464 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-14 05:34:01,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:34:01,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-14 05:34:01,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:01,468 INFO L225 Difference]: With dead ends: 43 [2020-10-14 05:34:01,468 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 05:34:01,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:34:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 05:34:01,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-14 05:34:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 05:34:01,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-14 05:34:01,484 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 32 [2020-10-14 05:34:01,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:01,485 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-14 05:34:01,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:34:01,485 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-14 05:34:01,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 05:34:01,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:01,489 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] [2020-10-14 05:34:01,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:34:01,490 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:01,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:01,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1917240241, now seen corresponding path program 1 times [2020-10-14 05:34:01,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:01,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274015944] [2020-10-14 05:34:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:01,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:01,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 05:34:01,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:34:01,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-14 05:34:01,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:01,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:01,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:34:01,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:34:01,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:34:01,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 05:34:01,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:01,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:01,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:01,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:01,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:01,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:01,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:01,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:34:01,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:01,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 05:34:02,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 05:34:02,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:34:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:34:02,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:02,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 05:34:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:34:02,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:34:02,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:02,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:02,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:02,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:34:02,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274015944] [2020-10-14 05:34:02,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:34:02,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:34:02,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518217249] [2020-10-14 05:34:02,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:34:02,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:02,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:34:02,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:34:02,064 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2020-10-14 05:34:02,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:02,118 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-10-14 05:34:02,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:34:02,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-14 05:34:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:02,123 INFO L225 Difference]: With dead ends: 59 [2020-10-14 05:34:02,123 INFO L226 Difference]: Without dead ends: 35 [2020-10-14 05:34:02,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:34:02,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-14 05:34:02,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-14 05:34:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 05:34:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-14 05:34:02,137 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 33 [2020-10-14 05:34:02,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:02,138 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-14 05:34:02,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:34:02,138 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-14 05:34:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 05:34:02,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:02,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:02,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:34:02,142 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:02,143 INFO L82 PathProgramCache]: Analyzing trace with hash -720607289, now seen corresponding path program 1 times [2020-10-14 05:34:02,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:02,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368318874] [2020-10-14 05:34:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 05:34:02,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:34:02,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 05:34:02,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:34:02,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:34:02,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:02,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:02,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:02,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:02,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:02,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:34:02,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:34:02,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:34:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:34:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:02,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:34:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:34:02,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:34:02,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:34:02,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:02,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368318874] [2020-10-14 05:34:02,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:34:02,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:34:02,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576785772] [2020-10-14 05:34:02,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:34:02,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:02,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:34:02,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:34:02,383 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 5 states. [2020-10-14 05:34:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:02,414 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-10-14 05:34:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:34:02,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-14 05:34:02,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:02,419 INFO L225 Difference]: With dead ends: 62 [2020-10-14 05:34:02,419 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 05:34:02,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:34:02,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 05:34:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-14 05:34:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 05:34:02,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-14 05:34:02,428 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 34 [2020-10-14 05:34:02,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:02,432 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-14 05:34:02,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:34:02,432 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-14 05:34:02,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 05:34:02,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:02,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:02,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:34:02,434 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:02,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:02,434 INFO L82 PathProgramCache]: Analyzing trace with hash -759720898, now seen corresponding path program 1 times [2020-10-14 05:34:02,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:02,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254999775] [2020-10-14 05:34:02,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 05:34:02,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 05:34:02,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:34:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:34:02,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:02,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:02,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:02,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:02,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:02,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:02,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:02,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:34:02,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:34:02,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:34:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:34:02,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:02,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:34:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:34:02,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:34:02,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:02,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:02,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:02,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:02,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254999775] [2020-10-14 05:34:02,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:34:02,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:34:02,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768352116] [2020-10-14 05:34:02,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:34:02,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:02,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:34:02,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:34:02,571 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2020-10-14 05:34:02,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:02,595 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-10-14 05:34:02,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:34:02,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-14 05:34:02,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:02,596 INFO L225 Difference]: With dead ends: 59 [2020-10-14 05:34:02,597 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 05:34:02,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:34:02,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 05:34:02,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-14 05:34:02,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 05:34:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-14 05:34:02,603 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 35 [2020-10-14 05:34:02,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:02,603 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-14 05:34:02,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:34:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-14 05:34:02,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 05:34:02,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:02,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:02,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:34:02,605 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:02,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:02,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1421856711, now seen corresponding path program 1 times [2020-10-14 05:34:02,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:02,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059673467] [2020-10-14 05:34:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 05:34:02,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 05:34:02,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:34:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:02,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 05:34:02,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:02,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:02,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:02,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:02,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:02,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:02,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:02,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:03,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:03,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:34:03,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 05:34:03,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:03,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:34:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:34:03,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:03,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 05:34:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:03,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:03,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:03,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:34:03,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:03,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 05:34:03,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:03,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:03,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:03,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:03,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:34:03,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:34:03,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059673467] [2020-10-14 05:34:03,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:03,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 05:34:03,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485536029] [2020-10-14 05:34:03,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:34:03,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:03,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:34:03,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:34:03,333 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 18 states. [2020-10-14 05:34:03,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:03,749 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2020-10-14 05:34:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:34:03,749 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2020-10-14 05:34:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:03,755 INFO L225 Difference]: With dead ends: 69 [2020-10-14 05:34:03,755 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 05:34:03,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:34:03,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 05:34:03,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2020-10-14 05:34:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 05:34:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-10-14 05:34:03,778 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 36 [2020-10-14 05:34:03,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:03,780 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-10-14 05:34:03,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 05:34:03,780 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-10-14 05:34:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:34:03,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:03,785 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:03,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:34:03,786 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:03,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:03,786 INFO L82 PathProgramCache]: Analyzing trace with hash -473230434, now seen corresponding path program 2 times [2020-10-14 05:34:03,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:03,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575115597] [2020-10-14 05:34:03,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:03,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:03,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:03,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 05:34:03,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:03,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 05:34:03,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:03,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:03,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:34:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:34:03,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:03,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:03,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:03,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:03,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:03,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:03,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:03,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:03,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:03,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:03,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:03,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:03,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:03,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:03,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:34:03,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:03,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:34:03,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:03,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:03,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:34:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:34:03,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:03,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:34:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:03,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:03,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:03,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:34:03,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:03,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:34:03,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:03,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:03,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:03,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:03,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:03,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:03,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575115597] [2020-10-14 05:34:03,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:03,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:34:03,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909021579] [2020-10-14 05:34:03,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:34:03,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:03,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:34:03,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:34:03,990 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 6 states. [2020-10-14 05:34:04,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:04,038 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2020-10-14 05:34:04,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:34:04,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-14 05:34:04,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:04,043 INFO L225 Difference]: With dead ends: 99 [2020-10-14 05:34:04,043 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 05:34:04,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:34:04,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 05:34:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2020-10-14 05:34:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 05:34:04,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2020-10-14 05:34:04,065 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 37 [2020-10-14 05:34:04,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:04,066 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2020-10-14 05:34:04,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:34:04,068 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2020-10-14 05:34:04,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:34:04,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:04,070 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:04,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:34:04,071 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:04,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:04,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1205452345, now seen corresponding path program 3 times [2020-10-14 05:34:04,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:04,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668574100] [2020-10-14 05:34:04,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:04,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:04,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:04,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 05:34:04,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:04,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 05:34:04,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:04,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:34:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 05:34:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:34:04,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:04,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:04,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:04,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:04,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:04,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:04,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:04,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:04,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:04,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:04,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:04,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:04,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:34:04,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:04,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:34:04,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:04,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:04,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:04,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:04,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:04,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:04,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 05:34:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:04,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:04,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:04,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:34:04,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 05:34:04,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:04,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:04,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:34:04,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:04,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:34:04,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:04,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:04,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668574100] [2020-10-14 05:34:04,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:04,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:34:04,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578320994] [2020-10-14 05:34:04,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:34:04,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:04,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:34:04,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:34:04,270 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand 6 states. [2020-10-14 05:34:04,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:04,313 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2020-10-14 05:34:04,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:34:04,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-14 05:34:04,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:04,315 INFO L225 Difference]: With dead ends: 89 [2020-10-14 05:34:04,315 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 05:34:04,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:34:04,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 05:34:04,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-10-14 05:34:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 05:34:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2020-10-14 05:34:04,325 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 37 [2020-10-14 05:34:04,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:04,326 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2020-10-14 05:34:04,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:34:04,326 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2020-10-14 05:34:04,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:34:04,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:04,327 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:04,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:34:04,328 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:04,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:04,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1163156936, now seen corresponding path program 4 times [2020-10-14 05:34:04,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:04,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773393783] [2020-10-14 05:34:04,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:04,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:04,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:04,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 05:34:04,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:04,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 05:34:04,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:04,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:34:04,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:04,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:04,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:04,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:04,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:04,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:04,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:04,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:04,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:04,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:04,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:04,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:04,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:04,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:34:04,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 05:34:04,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:04,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:04,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:34:04,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:04,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:34:04,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:04,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 05:34:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:04,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:04,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:04,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:34:04,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:04,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:34:04,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:04,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:04,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:34:04,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:34:04,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:04,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773393783] [2020-10-14 05:34:04,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:04,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:34:04,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119606512] [2020-10-14 05:34:04,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:34:04,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:04,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:34:04,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:34:04,663 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand 9 states. [2020-10-14 05:34:04,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:04,785 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2020-10-14 05:34:04,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:34:04,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-14 05:34:04,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:04,787 INFO L225 Difference]: With dead ends: 91 [2020-10-14 05:34:04,788 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 05:34:04,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:34:04,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 05:34:04,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-10-14 05:34:04,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 05:34:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2020-10-14 05:34:04,807 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 37 [2020-10-14 05:34:04,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:04,809 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2020-10-14 05:34:04,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:34:04,809 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2020-10-14 05:34:04,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:34:04,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:04,813 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:04,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:34:04,813 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:04,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:04,814 INFO L82 PathProgramCache]: Analyzing trace with hash -229775873, now seen corresponding path program 5 times [2020-10-14 05:34:04,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:04,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754698916] [2020-10-14 05:34:04,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:04,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:04,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:04,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 05:34:04,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:04,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 05:34:04,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:04,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:34:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:04,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:04,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:04,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:04,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:04,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:04,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:04,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:04,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:04,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:04,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:05,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:05,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:34:05,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:05,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 05:34:05,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:05,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:34:05,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:05,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:34:05,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:05,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:34:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:05,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:05,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:05,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:34:05,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:05,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:34:05,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:05,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:34:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:05,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:34:05,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:05,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754698916] [2020-10-14 05:34:05,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:05,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:34:05,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793855862] [2020-10-14 05:34:05,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:34:05,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:05,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:34:05,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:34:05,159 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand 9 states. [2020-10-14 05:34:05,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:05,287 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2020-10-14 05:34:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:34:05,288 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-14 05:34:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:05,289 INFO L225 Difference]: With dead ends: 91 [2020-10-14 05:34:05,289 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 05:34:05,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:34:05,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 05:34:05,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-10-14 05:34:05,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 05:34:05,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2020-10-14 05:34:05,299 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 37 [2020-10-14 05:34:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:05,299 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2020-10-14 05:34:05,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:34:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2020-10-14 05:34:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 05:34:05,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:05,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:05,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:34:05,301 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:05,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:05,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1490805387, now seen corresponding path program 6 times [2020-10-14 05:34:05,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:05,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057590440] [2020-10-14 05:34:05,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:05,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:05,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:05,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 05:34:05,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:05,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 05:34:05,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:05,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:34:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:05,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:05,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:05,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:05,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:05,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:05,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:05,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:05,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:05,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:05,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:05,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:05,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:05,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:05,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:05,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:05,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:34:05,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:05,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 05:34:05,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:05,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:34:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:34:05,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:05,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 05:34:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:05,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:05,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:05,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:05,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:05,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:34:05,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:05,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:34:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:34:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:34:05,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057590440] [2020-10-14 05:34:05,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:05,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:34:05,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206367399] [2020-10-14 05:34:05,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:34:05,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:05,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:34:05,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:34:05,585 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand 9 states. [2020-10-14 05:34:05,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:05,701 INFO L93 Difference]: Finished difference Result 107 states and 127 transitions. [2020-10-14 05:34:05,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:34:05,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-14 05:34:05,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:05,703 INFO L225 Difference]: With dead ends: 107 [2020-10-14 05:34:05,703 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 05:34:05,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:34:05,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 05:34:05,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2020-10-14 05:34:05,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 05:34:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 106 transitions. [2020-10-14 05:34:05,713 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 106 transitions. Word has length 38 [2020-10-14 05:34:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:05,714 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 106 transitions. [2020-10-14 05:34:05,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:34:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 106 transitions. [2020-10-14 05:34:05,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 05:34:05,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:05,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:05,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:34:05,715 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:05,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:05,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1431610674, now seen corresponding path program 7 times [2020-10-14 05:34:05,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:05,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249293318] [2020-10-14 05:34:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:05,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:05,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:05,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 05:34:05,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:05,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-14 05:34:05,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:05,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:34:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 05:34:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:06,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:06,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:06,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:06,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:06,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:06,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:06,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:06,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:06,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:06,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:06,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:06,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:06,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:06,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:06,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:06,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:34:06,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:06,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 05:34:06,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:06,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:34:06,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:06,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:34:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:06,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:06,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:06,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:34:06,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:06,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 05:34:06,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:06,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:06,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:34:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:34:06,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:34:06,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249293318] [2020-10-14 05:34:06,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:06,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 05:34:06,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91415573] [2020-10-14 05:34:06,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 05:34:06,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:06,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 05:34:06,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:34:06,460 INFO L87 Difference]: Start difference. First operand 88 states and 106 transitions. Second operand 20 states. [2020-10-14 05:34:06,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:06,907 INFO L93 Difference]: Finished difference Result 136 states and 169 transitions. [2020-10-14 05:34:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:34:06,907 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2020-10-14 05:34:06,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:06,909 INFO L225 Difference]: With dead ends: 136 [2020-10-14 05:34:06,909 INFO L226 Difference]: Without dead ends: 130 [2020-10-14 05:34:06,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:34:06,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-14 05:34:06,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 120. [2020-10-14 05:34:06,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-14 05:34:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 148 transitions. [2020-10-14 05:34:06,922 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 148 transitions. Word has length 38 [2020-10-14 05:34:06,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:06,923 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 148 transitions. [2020-10-14 05:34:06,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 05:34:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 148 transitions. [2020-10-14 05:34:06,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 05:34:06,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:06,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:06,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:34:06,925 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:06,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:06,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1770618937, now seen corresponding path program 8 times [2020-10-14 05:34:06,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:06,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136470621] [2020-10-14 05:34:06,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:07,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 05:34:07,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:07,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 05:34:07,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:07,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:34:07,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:07,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:07,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:07,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:07,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:07,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:07,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:07,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:07,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:07,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:07,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:07,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:07,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:34:07,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:07,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:07,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:34:07,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:34:07,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:07,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 05:34:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:07,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:07,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:34:07,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:07,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 05:34:07,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:07,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:07,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:34:07,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:34:07,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:34:07,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136470621] [2020-10-14 05:34:07,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:07,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:34:07,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855039275] [2020-10-14 05:34:07,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:34:07,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:07,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:34:07,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:34:07,207 INFO L87 Difference]: Start difference. First operand 120 states and 148 transitions. Second operand 9 states. [2020-10-14 05:34:07,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:07,315 INFO L93 Difference]: Finished difference Result 131 states and 158 transitions. [2020-10-14 05:34:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:34:07,316 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-14 05:34:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:07,317 INFO L225 Difference]: With dead ends: 131 [2020-10-14 05:34:07,317 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 05:34:07,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:34:07,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 05:34:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2020-10-14 05:34:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 05:34:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 141 transitions. [2020-10-14 05:34:07,329 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 141 transitions. Word has length 38 [2020-10-14 05:34:07,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:07,329 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 141 transitions. [2020-10-14 05:34:07,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:34:07,329 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 141 transitions. [2020-10-14 05:34:07,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 05:34:07,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:07,331 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:07,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:34:07,331 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:07,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:07,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1394986079, now seen corresponding path program 9 times [2020-10-14 05:34:07,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:07,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276789515] [2020-10-14 05:34:07,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:07,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:07,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 05:34:07,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:07,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 05:34:07,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:07,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:34:07,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:07,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:07,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:07,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:07,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:07,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:07,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:07,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:07,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:07,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:07,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:07,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:34:07,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:07,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 05:34:07,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:07,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:07,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:34:07,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:07,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:34:07,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:07,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:34:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:07,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:07,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:07,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:07,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 05:34:07,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:07,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:07,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:34:07,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:07,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:34:07,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:07,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276789515] [2020-10-14 05:34:07,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:07,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:34:07,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930545588] [2020-10-14 05:34:07,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:34:07,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:07,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:34:07,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:34:07,730 INFO L87 Difference]: Start difference. First operand 117 states and 141 transitions. Second operand 11 states. [2020-10-14 05:34:07,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:07,916 INFO L93 Difference]: Finished difference Result 135 states and 164 transitions. [2020-10-14 05:34:07,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:34:07,917 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-14 05:34:07,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:07,918 INFO L225 Difference]: With dead ends: 135 [2020-10-14 05:34:07,918 INFO L226 Difference]: Without dead ends: 121 [2020-10-14 05:34:07,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:34:07,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-14 05:34:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 112. [2020-10-14 05:34:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 05:34:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 137 transitions. [2020-10-14 05:34:07,930 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 137 transitions. Word has length 39 [2020-10-14 05:34:07,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:07,931 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 137 transitions. [2020-10-14 05:34:07,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:34:07,931 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 137 transitions. [2020-10-14 05:34:07,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 05:34:07,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:07,932 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:07,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:34:07,933 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:07,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:07,933 INFO L82 PathProgramCache]: Analyzing trace with hash 265027960, now seen corresponding path program 10 times [2020-10-14 05:34:07,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:07,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189393208] [2020-10-14 05:34:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:08,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:08,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 05:34:08,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:08,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 05:34:08,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:08,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:08,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:34:08,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:08,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:08,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:08,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:08,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:08,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:08,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:08,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:08,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:08,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:08,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:08,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:08,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:08,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:08,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:08,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:08,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:08,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:08,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 05:34:08,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:08,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:34:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:34:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:08,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 05:34:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:08,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:08,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:08,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:34:08,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 05:34:08,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:08,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:34:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:34:08,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:08,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189393208] [2020-10-14 05:34:08,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:08,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:34:08,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099048870] [2020-10-14 05:34:08,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:34:08,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:08,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:34:08,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:34:08,350 INFO L87 Difference]: Start difference. First operand 112 states and 137 transitions. Second operand 11 states. [2020-10-14 05:34:08,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:08,531 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2020-10-14 05:34:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:34:08,531 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-14 05:34:08,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:08,533 INFO L225 Difference]: With dead ends: 127 [2020-10-14 05:34:08,533 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 05:34:08,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:34:08,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 05:34:08,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-10-14 05:34:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 05:34:08,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2020-10-14 05:34:08,550 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 39 [2020-10-14 05:34:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:08,551 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2020-10-14 05:34:08,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:34:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2020-10-14 05:34:08,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 05:34:08,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:08,552 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:08,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:34:08,552 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:08,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:08,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1907547097, now seen corresponding path program 11 times [2020-10-14 05:34:08,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:08,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870986090] [2020-10-14 05:34:08,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:08,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:08,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:08,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 05:34:08,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:08,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 05:34:08,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:08,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:34:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 05:34:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:34:08,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:08,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:08,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:08,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:08,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:08,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:08,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:08,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:08,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:08,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:08,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:08,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:08,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:08,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:08,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:08,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:08,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:08,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:08,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:34:08,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:08,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:08,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:08,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 05:34:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:08,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:08,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:08,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:34:08,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:08,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 05:34:08,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:08,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:08,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:34:08,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:08,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:34:08,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:08,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 05:34:08,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870986090] [2020-10-14 05:34:08,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:08,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:34:08,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223512459] [2020-10-14 05:34:08,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:34:08,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:08,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:34:08,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:34:08,780 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand 7 states. [2020-10-14 05:34:08,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:08,840 INFO L93 Difference]: Finished difference Result 123 states and 146 transitions. [2020-10-14 05:34:08,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:34:08,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-14 05:34:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:08,843 INFO L225 Difference]: With dead ends: 123 [2020-10-14 05:34:08,843 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 05:34:08,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:34:08,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 05:34:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2020-10-14 05:34:08,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 05:34:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2020-10-14 05:34:08,853 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 39 [2020-10-14 05:34:08,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:08,853 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2020-10-14 05:34:08,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:34:08,853 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2020-10-14 05:34:08,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 05:34:08,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:08,854 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:08,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:34:08,855 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:08,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:08,855 INFO L82 PathProgramCache]: Analyzing trace with hash -73532542, now seen corresponding path program 12 times [2020-10-14 05:34:08,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:08,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851148230] [2020-10-14 05:34:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:08,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:08,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:08,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 05:34:08,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:08,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 05:34:08,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:08,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:34:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:34:08,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:08,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:08,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:08,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:08,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:08,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:09,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:09,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:09,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:09,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:09,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:09,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:09,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:09,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:09,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:09,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:09,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:34:09,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:09,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 05:34:09,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:09,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:34:09,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:09,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:34:09,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:09,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:34:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:09,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:09,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:09,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:09,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:09,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:34:09,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:09,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:09,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:09,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:09,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:09,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 05:34:09,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851148230] [2020-10-14 05:34:09,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:09,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:34:09,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484331506] [2020-10-14 05:34:09,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:34:09,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:09,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:34:09,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:34:09,101 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand 7 states. [2020-10-14 05:34:09,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:09,168 INFO L93 Difference]: Finished difference Result 159 states and 186 transitions. [2020-10-14 05:34:09,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:34:09,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-14 05:34:09,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:09,170 INFO L225 Difference]: With dead ends: 159 [2020-10-14 05:34:09,171 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 05:34:09,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:34:09,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 05:34:09,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-14 05:34:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 05:34:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 116 transitions. [2020-10-14 05:34:09,183 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 116 transitions. Word has length 39 [2020-10-14 05:34:09,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:09,183 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 116 transitions. [2020-10-14 05:34:09,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:34:09,184 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 116 transitions. [2020-10-14 05:34:09,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 05:34:09,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:09,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:09,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:34:09,186 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:09,186 INFO L82 PathProgramCache]: Analyzing trace with hash -409339687, now seen corresponding path program 13 times [2020-10-14 05:34:09,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:09,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447414981] [2020-10-14 05:34:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:09,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:09,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 05:34:09,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:09,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-14 05:34:09,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:09,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 05:34:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 05:34:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:09,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:09,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:09,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:09,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:09,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:09,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:09,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:09,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:09,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:09,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:09,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:09,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:09,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:09,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 05:34:09,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:09,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:34:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:34:09,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:09,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 05:34:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:09,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:09,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:09,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:09,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 05:34:09,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:09,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:34:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:34:10,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447414981] [2020-10-14 05:34:10,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:10,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 05:34:10,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362884736] [2020-10-14 05:34:10,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 05:34:10,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:10,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 05:34:10,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:34:10,134 INFO L87 Difference]: Start difference. First operand 99 states and 116 transitions. Second operand 22 states. [2020-10-14 05:34:10,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:10,704 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2020-10-14 05:34:10,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 05:34:10,705 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 40 [2020-10-14 05:34:10,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:10,706 INFO L225 Difference]: With dead ends: 139 [2020-10-14 05:34:10,706 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 05:34:10,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:34:10,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 05:34:10,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 115. [2020-10-14 05:34:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 05:34:10,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2020-10-14 05:34:10,719 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 40 [2020-10-14 05:34:10,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:10,720 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2020-10-14 05:34:10,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 05:34:10,720 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2020-10-14 05:34:10,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 05:34:10,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:10,721 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:10,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 05:34:10,721 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:10,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:10,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1337755289, now seen corresponding path program 14 times [2020-10-14 05:34:10,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:10,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045607715] [2020-10-14 05:34:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:10,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:11,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:11,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 05:34:11,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:11,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-14 05:34:11,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:11,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:34:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 05:34:11,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:11,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:11,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:11,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:11,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:11,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:11,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:11,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:11,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:11,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:11,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:11,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:11,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:11,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:11,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:11,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 05:34:11,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:11,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:34:11,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:11,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 05:34:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:11,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:11,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:11,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:11,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:11,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 05:34:11,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:11,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:11,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:34:11,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:11,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:34:11,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:34:11,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045607715] [2020-10-14 05:34:11,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:11,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 05:34:11,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730555924] [2020-10-14 05:34:11,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 05:34:11,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:11,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 05:34:11,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:34:11,421 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand 20 states. [2020-10-14 05:34:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:11,880 INFO L93 Difference]: Finished difference Result 133 states and 156 transitions. [2020-10-14 05:34:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:34:11,882 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2020-10-14 05:34:11,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:11,884 INFO L225 Difference]: With dead ends: 133 [2020-10-14 05:34:11,884 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 05:34:11,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:34:11,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 05:34:11,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-10-14 05:34:11,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 05:34:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2020-10-14 05:34:11,902 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 40 [2020-10-14 05:34:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:11,903 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2020-10-14 05:34:11,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 05:34:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2020-10-14 05:34:11,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 05:34:11,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:11,904 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:11,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 05:34:11,904 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:11,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:11,905 INFO L82 PathProgramCache]: Analyzing trace with hash 160099736, now seen corresponding path program 15 times [2020-10-14 05:34:11,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:11,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410332053] [2020-10-14 05:34:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:11,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:12,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:12,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 05:34:12,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:12,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 05:34:12,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:12,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:34:12,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:12,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 05:34:12,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:12,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:12,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:12,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:12,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:12,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:12,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:12,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:12,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:12,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:12,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:12,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:12,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 05:34:12,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:12,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:34:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:34:12,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:12,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 05:34:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:12,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:12,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:34:12,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:12,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 05:34:12,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:12,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:12,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:34:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:34:12,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:12,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410332053] [2020-10-14 05:34:12,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:12,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:34:12,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672442668] [2020-10-14 05:34:12,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:34:12,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:12,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:34:12,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:34:12,461 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand 13 states. [2020-10-14 05:34:12,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:12,747 INFO L93 Difference]: Finished difference Result 151 states and 179 transitions. [2020-10-14 05:34:12,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:34:12,749 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-14 05:34:12,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:12,750 INFO L225 Difference]: With dead ends: 151 [2020-10-14 05:34:12,750 INFO L226 Difference]: Without dead ends: 137 [2020-10-14 05:34:12,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:34:12,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-14 05:34:12,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 128. [2020-10-14 05:34:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-14 05:34:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 153 transitions. [2020-10-14 05:34:12,773 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 153 transitions. Word has length 41 [2020-10-14 05:34:12,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:12,773 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 153 transitions. [2020-10-14 05:34:12,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:34:12,773 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 153 transitions. [2020-10-14 05:34:12,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 05:34:12,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:12,774 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:12,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 05:34:12,775 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:12,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:12,775 INFO L82 PathProgramCache]: Analyzing trace with hash -508863585, now seen corresponding path program 16 times [2020-10-14 05:34:12,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:12,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610713993] [2020-10-14 05:34:12,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:12,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:12,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:12,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 05:34:12,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:12,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 05:34:12,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:12,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:34:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:34:12,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:13,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:13,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:13,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:13,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:13,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:13,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:13,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:13,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:13,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:13,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:13,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:13,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:13,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:13,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:13,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:34:13,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:13,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 05:34:13,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:13,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:34:13,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:13,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:34:13,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:13,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:34:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:13,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:13,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:13,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:13,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:13,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 05:34:13,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:13,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:13,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:34:13,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:13,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:34:13,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:13,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610713993] [2020-10-14 05:34:13,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:13,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:34:13,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131803882] [2020-10-14 05:34:13,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:34:13,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:13,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:34:13,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:34:13,243 INFO L87 Difference]: Start difference. First operand 128 states and 153 transitions. Second operand 13 states. [2020-10-14 05:34:13,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:13,502 INFO L93 Difference]: Finished difference Result 143 states and 168 transitions. [2020-10-14 05:34:13,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:34:13,503 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-14 05:34:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:13,504 INFO L225 Difference]: With dead ends: 143 [2020-10-14 05:34:13,504 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 05:34:13,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:34:13,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 05:34:13,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2020-10-14 05:34:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 05:34:13,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2020-10-14 05:34:13,525 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 41 [2020-10-14 05:34:13,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:13,525 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2020-10-14 05:34:13,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:34:13,525 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2020-10-14 05:34:13,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 05:34:13,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:13,527 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:13,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 05:34:13,527 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:13,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:13,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2138005090, now seen corresponding path program 17 times [2020-10-14 05:34:13,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:13,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727690872] [2020-10-14 05:34:13,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:13,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:13,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 05:34:13,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 05:34:13,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:13,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:34:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:13,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:34:13,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:13,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:13,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:13,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:13,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:13,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:13,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:13,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:13,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:13,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:13,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:13,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:13,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:13,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:13,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:13,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:34:13,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:13,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 05:34:13,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:13,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:34:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:13,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:34:13,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:13,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:34:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:13,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:13,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:13,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:13,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:13,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:34:13,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:13,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:13,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:13,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:13,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 05:34:13,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727690872] [2020-10-14 05:34:13,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:13,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:34:13,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82602518] [2020-10-14 05:34:13,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:34:13,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:13,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:34:13,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:34:13,746 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand 8 states. [2020-10-14 05:34:13,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:13,829 INFO L93 Difference]: Finished difference Result 245 states and 292 transitions. [2020-10-14 05:34:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:34:13,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-14 05:34:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:13,831 INFO L225 Difference]: With dead ends: 245 [2020-10-14 05:34:13,831 INFO L226 Difference]: Without dead ends: 163 [2020-10-14 05:34:13,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:34:13,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-14 05:34:13,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 151. [2020-10-14 05:34:13,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 05:34:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 180 transitions. [2020-10-14 05:34:13,852 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 180 transitions. Word has length 41 [2020-10-14 05:34:13,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:13,852 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 180 transitions. [2020-10-14 05:34:13,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:34:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 180 transitions. [2020-10-14 05:34:13,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 05:34:13,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:13,857 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:13,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 05:34:13,858 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:13,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:13,859 INFO L82 PathProgramCache]: Analyzing trace with hash 854078425, now seen corresponding path program 18 times [2020-10-14 05:34:13,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:13,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894589295] [2020-10-14 05:34:13,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:13,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:13,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:13,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 05:34:13,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:13,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 05:34:13,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:13,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:34:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 05:34:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:34:13,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:13,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:13,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:13,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:13,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:13,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:13,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:34:13,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:13,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:13,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:13,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:13,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:13,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:13,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:13,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:34:13,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:13,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:13,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:13,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:13,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:13,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:13,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 05:34:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:14,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:14,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:14,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:34:14,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 05:34:14,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:14,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:34:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:34:14,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 05:34:14,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894589295] [2020-10-14 05:34:14,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:14,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:34:14,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746892312] [2020-10-14 05:34:14,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:34:14,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:14,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:34:14,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:34:14,071 INFO L87 Difference]: Start difference. First operand 151 states and 180 transitions. Second operand 8 states. [2020-10-14 05:34:14,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:14,153 INFO L93 Difference]: Finished difference Result 207 states and 249 transitions. [2020-10-14 05:34:14,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:34:14,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-14 05:34:14,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:14,157 INFO L225 Difference]: With dead ends: 207 [2020-10-14 05:34:14,158 INFO L226 Difference]: Without dead ends: 185 [2020-10-14 05:34:14,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:34:14,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-14 05:34:14,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 173. [2020-10-14 05:34:14,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 05:34:14,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 207 transitions. [2020-10-14 05:34:14,180 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 207 transitions. Word has length 41 [2020-10-14 05:34:14,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:14,180 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 207 transitions. [2020-10-14 05:34:14,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:34:14,181 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 207 transitions. [2020-10-14 05:34:14,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 05:34:14,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:14,184 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:14,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 05:34:14,185 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:14,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:14,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1369826194, now seen corresponding path program 19 times [2020-10-14 05:34:14,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:14,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588087104] [2020-10-14 05:34:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:14,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:14,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:14,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 05:34:14,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:14,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-14 05:34:14,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:14,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:14,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 05:34:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 05:34:14,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:14,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:14,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:14,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:14,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:14,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:14,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:14,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:14,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:14,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:14,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:14,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:14,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:34:14,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:14,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 05:34:14,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:14,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:34:14,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:14,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:34:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:14,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:14,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:14,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:34:14,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:14,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 05:34:14,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:14,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:14,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:14,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:34:14,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:34:15,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588087104] [2020-10-14 05:34:15,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:15,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 05:34:15,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080101780] [2020-10-14 05:34:15,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 05:34:15,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:15,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 05:34:15,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:34:15,062 INFO L87 Difference]: Start difference. First operand 173 states and 207 transitions. Second operand 24 states. [2020-10-14 05:34:15,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:15,657 INFO L93 Difference]: Finished difference Result 223 states and 266 transitions. [2020-10-14 05:34:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:34:15,658 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 42 [2020-10-14 05:34:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:15,660 INFO L225 Difference]: With dead ends: 223 [2020-10-14 05:34:15,660 INFO L226 Difference]: Without dead ends: 217 [2020-10-14 05:34:15,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:34:15,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-14 05:34:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 189. [2020-10-14 05:34:15,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 05:34:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 226 transitions. [2020-10-14 05:34:15,685 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 226 transitions. Word has length 42 [2020-10-14 05:34:15,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:15,686 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 226 transitions. [2020-10-14 05:34:15,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 05:34:15,686 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 226 transitions. [2020-10-14 05:34:15,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 05:34:15,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:15,688 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:15,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 05:34:15,688 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:15,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:15,688 INFO L82 PathProgramCache]: Analyzing trace with hash -402225529, now seen corresponding path program 20 times [2020-10-14 05:34:15,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:15,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143264996] [2020-10-14 05:34:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:15,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:15,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:15,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 05:34:15,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:15,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 05:34:15,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:15,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:34:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:15,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:15,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:15,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:15,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:15,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:15,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:15,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:15,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:15,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:15,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:15,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:15,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:15,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:15,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 05:34:15,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:15,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:34:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:34:15,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:15,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 05:34:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:15,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:15,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:15,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:15,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:15,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:34:15,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:15,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:34:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:34:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 05:34:16,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143264996] [2020-10-14 05:34:16,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:16,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:34:16,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844400699] [2020-10-14 05:34:16,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:34:16,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:16,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:34:16,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:34:16,045 INFO L87 Difference]: Start difference. First operand 189 states and 226 transitions. Second operand 11 states. [2020-10-14 05:34:16,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:16,223 INFO L93 Difference]: Finished difference Result 229 states and 272 transitions. [2020-10-14 05:34:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:34:16,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-14 05:34:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:16,225 INFO L225 Difference]: With dead ends: 229 [2020-10-14 05:34:16,225 INFO L226 Difference]: Without dead ends: 214 [2020-10-14 05:34:16,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:34:16,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-14 05:34:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 209. [2020-10-14 05:34:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-14 05:34:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 248 transitions. [2020-10-14 05:34:16,251 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 248 transitions. Word has length 42 [2020-10-14 05:34:16,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:16,251 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 248 transitions. [2020-10-14 05:34:16,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:34:16,252 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 248 transitions. [2020-10-14 05:34:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 05:34:16,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:16,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:16,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 05:34:16,255 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:16,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:16,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1931193074, now seen corresponding path program 21 times [2020-10-14 05:34:16,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:16,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20068083] [2020-10-14 05:34:16,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:16,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:16,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:16,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 05:34:16,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:16,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-14 05:34:16,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:16,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 05:34:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 05:34:16,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:16,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:16,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:16,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:16,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:16,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:16,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:16,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:16,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:16,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:16,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:16,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:16,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:16,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:16,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:16,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:16,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:34:16,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:16,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 05:34:16,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:16,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:34:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:16,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:34:16,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:16,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:34:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:16,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:16,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:16,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:34:16,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 05:34:16,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:16,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:34:16,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:34:16,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20068083] [2020-10-14 05:34:16,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:16,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 05:34:16,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819891245] [2020-10-14 05:34:16,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 05:34:16,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:16,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 05:34:16,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:34:16,984 INFO L87 Difference]: Start difference. First operand 209 states and 248 transitions. Second operand 22 states. [2020-10-14 05:34:17,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:17,618 INFO L93 Difference]: Finished difference Result 227 states and 270 transitions. [2020-10-14 05:34:17,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 05:34:17,619 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2020-10-14 05:34:17,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:17,622 INFO L225 Difference]: With dead ends: 227 [2020-10-14 05:34:17,622 INFO L226 Difference]: Without dead ends: 212 [2020-10-14 05:34:17,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:34:17,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-14 05:34:17,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2020-10-14 05:34:17,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-14 05:34:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 247 transitions. [2020-10-14 05:34:17,655 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 247 transitions. Word has length 42 [2020-10-14 05:34:17,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:17,655 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 247 transitions. [2020-10-14 05:34:17,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 05:34:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 247 transitions. [2020-10-14 05:34:17,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 05:34:17,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:17,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:17,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 05:34:17,658 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:17,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:17,658 INFO L82 PathProgramCache]: Analyzing trace with hash -658076149, now seen corresponding path program 22 times [2020-10-14 05:34:17,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:17,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690152547] [2020-10-14 05:34:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:17,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:17,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:17,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 05:34:17,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:17,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 05:34:17,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:17,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:34:17,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:17,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:17,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:17,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:17,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:17,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:17,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:17,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:17,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:17,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:17,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:17,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:17,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:17,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:17,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:17,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:34:17,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:17,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:17,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:34:17,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:17,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:34:17,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:17,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:34:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:17,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:17,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:17,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:34:17,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:17,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:34:17,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:17,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:34:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:34:17,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 05:34:18,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690152547] [2020-10-14 05:34:18,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:18,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:34:18,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129016021] [2020-10-14 05:34:18,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:34:18,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:18,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:34:18,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:34:18,032 INFO L87 Difference]: Start difference. First operand 207 states and 247 transitions. Second operand 11 states. [2020-10-14 05:34:18,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:18,209 INFO L93 Difference]: Finished difference Result 221 states and 260 transitions. [2020-10-14 05:34:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:34:18,209 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-14 05:34:18,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:18,211 INFO L225 Difference]: With dead ends: 221 [2020-10-14 05:34:18,211 INFO L226 Difference]: Without dead ends: 201 [2020-10-14 05:34:18,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:34:18,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-14 05:34:18,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2020-10-14 05:34:18,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-14 05:34:18,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 235 transitions. [2020-10-14 05:34:18,240 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 235 transitions. Word has length 42 [2020-10-14 05:34:18,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:18,241 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 235 transitions. [2020-10-14 05:34:18,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:34:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 235 transitions. [2020-10-14 05:34:18,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 05:34:18,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:18,243 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:18,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 05:34:18,244 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:18,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:18,244 INFO L82 PathProgramCache]: Analyzing trace with hash -520332801, now seen corresponding path program 23 times [2020-10-14 05:34:18,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:18,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436014745] [2020-10-14 05:34:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:18,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:18,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:18,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 05:34:18,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:18,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 05:34:18,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:18,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:34:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:34:18,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:18,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:18,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:18,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:18,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:18,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:18,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:18,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:18,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:18,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:18,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:18,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:18,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:18,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:34:18,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:18,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 05:34:18,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:18,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:34:18,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:34:18,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:34:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:18,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:18,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:18,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:18,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:18,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 05:34:18,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:18,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:18,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:34:18,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:18,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436014745] [2020-10-14 05:34:18,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:18,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 05:34:18,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065177516] [2020-10-14 05:34:18,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:34:18,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:18,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:34:18,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:34:18,794 INFO L87 Difference]: Start difference. First operand 199 states and 235 transitions. Second operand 15 states. [2020-10-14 05:34:19,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:19,140 INFO L93 Difference]: Finished difference Result 243 states and 288 transitions. [2020-10-14 05:34:19,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:34:19,140 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-10-14 05:34:19,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:19,142 INFO L225 Difference]: With dead ends: 243 [2020-10-14 05:34:19,142 INFO L226 Difference]: Without dead ends: 229 [2020-10-14 05:34:19,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:34:19,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-14 05:34:19,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 220. [2020-10-14 05:34:19,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-14 05:34:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 261 transitions. [2020-10-14 05:34:19,172 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 261 transitions. Word has length 43 [2020-10-14 05:34:19,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:19,172 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 261 transitions. [2020-10-14 05:34:19,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:34:19,172 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 261 transitions. [2020-10-14 05:34:19,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 05:34:19,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:19,175 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:19,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 05:34:19,175 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:19,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:19,176 INFO L82 PathProgramCache]: Analyzing trace with hash 216640728, now seen corresponding path program 24 times [2020-10-14 05:34:19,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:19,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425212212] [2020-10-14 05:34:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:19,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:19,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:19,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 05:34:19,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:19,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 05:34:19,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:19,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:34:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:34:19,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:19,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:19,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:19,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:19,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:19,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:19,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:19,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:19,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:19,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:19,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:19,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:19,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:19,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:19,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:19,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 05:34:19,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:19,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:34:19,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:19,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:34:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:19,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:19,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:19,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:34:19,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 05:34:19,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:19,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:34:19,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:19,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425212212] [2020-10-14 05:34:19,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:19,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 05:34:19,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110938203] [2020-10-14 05:34:19,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:34:19,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:19,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:34:19,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:34:19,707 INFO L87 Difference]: Start difference. First operand 220 states and 261 transitions. Second operand 15 states. [2020-10-14 05:34:20,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:20,043 INFO L93 Difference]: Finished difference Result 235 states and 276 transitions. [2020-10-14 05:34:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:34:20,044 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-10-14 05:34:20,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:20,046 INFO L225 Difference]: With dead ends: 235 [2020-10-14 05:34:20,046 INFO L226 Difference]: Without dead ends: 223 [2020-10-14 05:34:20,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:34:20,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-14 05:34:20,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-10-14 05:34:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-14 05:34:20,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 260 transitions. [2020-10-14 05:34:20,085 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 260 transitions. Word has length 43 [2020-10-14 05:34:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:20,085 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 260 transitions. [2020-10-14 05:34:20,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:34:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 260 transitions. [2020-10-14 05:34:20,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 05:34:20,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:20,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:20,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 05:34:20,092 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:20,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:20,092 INFO L82 PathProgramCache]: Analyzing trace with hash -444003079, now seen corresponding path program 25 times [2020-10-14 05:34:20,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:20,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098145590] [2020-10-14 05:34:20,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:20,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:20,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 05:34:20,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:20,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 05:34:20,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:20,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 05:34:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:34:20,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:20,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:20,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:20,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:20,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:20,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:20,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:20,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:20,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:20,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:20,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:20,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:20,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:20,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:20,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:20,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:34:20,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:20,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:20,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:20,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:34:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:20,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:20,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:34:20,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:20,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:34:20,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:20,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:34:20,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 05:34:20,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098145590] [2020-10-14 05:34:20,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:20,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:34:20,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462589031] [2020-10-14 05:34:20,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:34:20,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:20,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:34:20,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:34:20,346 INFO L87 Difference]: Start difference. First operand 221 states and 260 transitions. Second operand 9 states. [2020-10-14 05:34:20,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:20,460 INFO L93 Difference]: Finished difference Result 239 states and 280 transitions. [2020-10-14 05:34:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:34:20,461 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-14 05:34:20,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:20,465 INFO L225 Difference]: With dead ends: 239 [2020-10-14 05:34:20,465 INFO L226 Difference]: Without dead ends: 218 [2020-10-14 05:34:20,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:34:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-14 05:34:20,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 206. [2020-10-14 05:34:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-14 05:34:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 239 transitions. [2020-10-14 05:34:20,495 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 239 transitions. Word has length 43 [2020-10-14 05:34:20,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:20,495 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 239 transitions. [2020-10-14 05:34:20,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:34:20,495 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 239 transitions. [2020-10-14 05:34:20,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 05:34:20,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:20,498 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:20,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 05:34:20,499 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:20,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:20,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1181398018, now seen corresponding path program 26 times [2020-10-14 05:34:20,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:20,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092038940] [2020-10-14 05:34:20,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:20,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:20,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:20,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 05:34:20,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 05:34:20,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:20,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:34:20,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:20,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:20,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:20,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:20,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:20,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:20,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:34:20,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:20,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:20,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:20,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:20,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:34:20,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:20,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:20,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:20,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:34:20,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:20,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 05:34:20,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:20,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:20,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:20,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:20,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:34:20,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:20,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:34:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:20,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:20,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:20,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:20,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:20,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:34:20,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:20,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:34:20,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:20,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 05:34:20,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092038940] [2020-10-14 05:34:20,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:20,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:34:20,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004183026] [2020-10-14 05:34:20,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:34:20,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:20,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:34:20,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:34:20,751 INFO L87 Difference]: Start difference. First operand 206 states and 239 transitions. Second operand 9 states. [2020-10-14 05:34:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:20,891 INFO L93 Difference]: Finished difference Result 332 states and 382 transitions. [2020-10-14 05:34:20,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:34:20,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-14 05:34:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:20,893 INFO L225 Difference]: With dead ends: 332 [2020-10-14 05:34:20,894 INFO L226 Difference]: Without dead ends: 211 [2020-10-14 05:34:20,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:34:20,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-14 05:34:20,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-10-14 05:34:20,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-14 05:34:20,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 244 transitions. [2020-10-14 05:34:20,953 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 244 transitions. Word has length 43 [2020-10-14 05:34:20,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:20,954 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 244 transitions. [2020-10-14 05:34:20,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:34:20,954 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 244 transitions. [2020-10-14 05:34:20,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 05:34:20,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:20,957 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:20,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 05:34:20,957 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:20,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:20,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1909343879, now seen corresponding path program 27 times [2020-10-14 05:34:20,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:20,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477126431] [2020-10-14 05:34:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:20,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:21,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:21,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 05:34:21,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:21,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-14 05:34:21,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:21,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 05:34:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 05:34:21,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:21,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:21,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:21,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:21,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:21,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:21,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:21,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:21,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:21,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:21,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:21,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:21,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:21,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:21,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:21,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:21,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:21,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:21,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 05:34:21,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:21,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:34:21,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:21,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:34:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:21,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:21,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:21,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:21,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:21,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 05:34:21,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:21,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:34:21,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:21,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:34:21,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:34:21,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477126431] [2020-10-14 05:34:21,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:21,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 05:34:21,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098985059] [2020-10-14 05:34:21,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 05:34:21,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:21,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 05:34:21,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:34:21,951 INFO L87 Difference]: Start difference. First operand 211 states and 244 transitions. Second operand 26 states. [2020-10-14 05:34:22,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:22,705 INFO L93 Difference]: Finished difference Result 269 states and 311 transitions. [2020-10-14 05:34:22,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 05:34:22,707 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 44 [2020-10-14 05:34:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:22,710 INFO L225 Difference]: With dead ends: 269 [2020-10-14 05:34:22,710 INFO L226 Difference]: Without dead ends: 263 [2020-10-14 05:34:22,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=1167, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:34:22,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-14 05:34:22,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 227. [2020-10-14 05:34:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-14 05:34:22,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 263 transitions. [2020-10-14 05:34:22,757 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 263 transitions. Word has length 44 [2020-10-14 05:34:22,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:22,757 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 263 transitions. [2020-10-14 05:34:22,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 05:34:22,757 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 263 transitions. [2020-10-14 05:34:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 05:34:22,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:22,760 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:22,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 05:34:22,761 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:22,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:22,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1395186759, now seen corresponding path program 28 times [2020-10-14 05:34:22,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:22,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141458189] [2020-10-14 05:34:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:22,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:23,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:23,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 05:34:23,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:23,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-14 05:34:23,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:23,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 05:34:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 05:34:23,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:23,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:23,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:23,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:23,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:23,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:23,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:23,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:23,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:23,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:23,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:23,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:23,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 05:34:23,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:23,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:34:23,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:23,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:34:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:23,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:23,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:23,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:23,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:23,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:34:23,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:23,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:34:23,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:23,653 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:34:23,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141458189] [2020-10-14 05:34:23,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:23,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 05:34:23,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639985684] [2020-10-14 05:34:23,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 05:34:23,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:23,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 05:34:23,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:34:23,655 INFO L87 Difference]: Start difference. First operand 227 states and 263 transitions. Second operand 24 states. [2020-10-14 05:34:24,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:24,327 INFO L93 Difference]: Finished difference Result 233 states and 268 transitions. [2020-10-14 05:34:24,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:34:24,327 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 44 [2020-10-14 05:34:24,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:24,329 INFO L225 Difference]: With dead ends: 233 [2020-10-14 05:34:24,329 INFO L226 Difference]: Without dead ends: 211 [2020-10-14 05:34:24,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=1163, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:34:24,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-14 05:34:24,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-10-14 05:34:24,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-14 05:34:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 245 transitions. [2020-10-14 05:34:24,364 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 245 transitions. Word has length 44 [2020-10-14 05:34:24,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:24,364 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 245 transitions. [2020-10-14 05:34:24,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 05:34:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 245 transitions. [2020-10-14 05:34:24,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 05:34:24,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:24,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:24,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 05:34:24,368 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:24,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:24,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1454143865, now seen corresponding path program 29 times [2020-10-14 05:34:24,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:24,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751787838] [2020-10-14 05:34:24,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:24,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:24,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:24,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 05:34:24,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:24,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-14 05:34:24,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:24,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 05:34:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 05:34:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:24,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:24,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:24,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:24,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:24,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:24,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:24,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:24,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:24,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:24,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:24,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:24,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:24,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:24,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:24,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 05:34:24,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:24,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:34:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:34:24,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:34:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:24,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:24,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:24,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:24,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:24,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 05:34:24,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:24,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:34:24,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 05:34:25,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751787838] [2020-10-14 05:34:25,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:25,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 05:34:25,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138808809] [2020-10-14 05:34:25,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 05:34:25,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:25,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 05:34:25,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:34:25,164 INFO L87 Difference]: Start difference. First operand 211 states and 245 transitions. Second operand 22 states. [2020-10-14 05:34:25,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:25,766 INFO L93 Difference]: Finished difference Result 229 states and 266 transitions. [2020-10-14 05:34:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 05:34:25,767 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 44 [2020-10-14 05:34:25,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:25,771 INFO L225 Difference]: With dead ends: 229 [2020-10-14 05:34:25,771 INFO L226 Difference]: Without dead ends: 223 [2020-10-14 05:34:25,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:34:25,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-14 05:34:25,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-10-14 05:34:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-14 05:34:25,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 258 transitions. [2020-10-14 05:34:25,802 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 258 transitions. Word has length 44 [2020-10-14 05:34:25,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:25,803 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 258 transitions. [2020-10-14 05:34:25,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 05:34:25,803 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 258 transitions. [2020-10-14 05:34:25,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 05:34:25,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:25,805 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:25,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 05:34:25,806 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:25,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:25,806 INFO L82 PathProgramCache]: Analyzing trace with hash 904610040, now seen corresponding path program 30 times [2020-10-14 05:34:25,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:25,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671645757] [2020-10-14 05:34:25,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:25,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:26,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:26,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 05:34:26,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:26,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-14 05:34:26,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:26,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:34:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 05:34:26,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:26,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:26,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:26,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:26,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:26,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:26,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:26,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:26,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:26,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:26,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:26,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:26,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:26,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:26,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:26,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:26,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:26,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 05:34:26,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:26,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:34:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:34:26,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:26,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:34:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:26,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:26,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:26,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:34:26,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:26,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 05:34:26,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:26,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:26,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:34:26,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:26,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:34:26,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:26,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671645757] [2020-10-14 05:34:26,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:26,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:34:26,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939329890] [2020-10-14 05:34:26,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:34:26,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:26,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:34:26,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:34:26,390 INFO L87 Difference]: Start difference. First operand 221 states and 258 transitions. Second operand 17 states. [2020-10-14 05:34:26,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:26,897 INFO L93 Difference]: Finished difference Result 267 states and 313 transitions. [2020-10-14 05:34:26,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:34:26,898 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-10-14 05:34:26,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:26,901 INFO L225 Difference]: With dead ends: 267 [2020-10-14 05:34:26,901 INFO L226 Difference]: Without dead ends: 253 [2020-10-14 05:34:26,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:34:26,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-14 05:34:26,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 244. [2020-10-14 05:34:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-14 05:34:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 286 transitions. [2020-10-14 05:34:26,931 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 286 transitions. Word has length 45 [2020-10-14 05:34:26,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:26,931 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 286 transitions. [2020-10-14 05:34:26,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:34:26,931 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 286 transitions. [2020-10-14 05:34:26,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 05:34:26,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:26,934 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:26,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 05:34:26,934 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:26,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:26,935 INFO L82 PathProgramCache]: Analyzing trace with hash -2019014337, now seen corresponding path program 31 times [2020-10-14 05:34:26,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:26,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630520501] [2020-10-14 05:34:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:26,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:27,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 05:34:27,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 05:34:27,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:27,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:34:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 05:34:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:27,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:27,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:27,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:27,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:27,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:27,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:27,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:27,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:27,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:27,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:27,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:27,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:27,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:27,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:34:27,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:27,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 05:34:27,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:27,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:27,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:34:27,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:34:27,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:27,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 05:34:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:27,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:27,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:27,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 05:34:27,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:27,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:34:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:34:27,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:27,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630520501] [2020-10-14 05:34:27,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:27,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:34:27,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045626626] [2020-10-14 05:34:27,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:34:27,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:27,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:34:27,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:34:27,504 INFO L87 Difference]: Start difference. First operand 244 states and 286 transitions. Second operand 17 states. [2020-10-14 05:34:27,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:27,970 INFO L93 Difference]: Finished difference Result 259 states and 301 transitions. [2020-10-14 05:34:27,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:34:27,971 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-10-14 05:34:27,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:27,973 INFO L225 Difference]: With dead ends: 259 [2020-10-14 05:34:27,973 INFO L226 Difference]: Without dead ends: 247 [2020-10-14 05:34:27,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:34:27,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-14 05:34:28,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2020-10-14 05:34:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-14 05:34:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 285 transitions. [2020-10-14 05:34:28,002 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 285 transitions. Word has length 45 [2020-10-14 05:34:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:28,003 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 285 transitions. [2020-10-14 05:34:28,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:34:28,003 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 285 transitions. [2020-10-14 05:34:28,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 05:34:28,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:28,006 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:28,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 05:34:28,007 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:28,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:28,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1551563614, now seen corresponding path program 32 times [2020-10-14 05:34:28,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:28,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466288364] [2020-10-14 05:34:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:28,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:28,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:28,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 05:34:28,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:28,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 05:34:28,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:28,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:34:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:34:28,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:28,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:28,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:28,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:28,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:28,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:28,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:28,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:28,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:28,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:28,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:28,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:28,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:28,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:34:28,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:28,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 05:34:28,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:28,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:34:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:34:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:28,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 05:34:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:28,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:28,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:28,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:28,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:34:28,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:28,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:28,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:28,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:34:28,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:28,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:28,281 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 05:34:28,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466288364] [2020-10-14 05:34:28,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:28,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:34:28,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365995400] [2020-10-14 05:34:28,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:34:28,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:28,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:34:28,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:34:28,283 INFO L87 Difference]: Start difference. First operand 245 states and 285 transitions. Second operand 10 states. [2020-10-14 05:34:28,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:28,429 INFO L93 Difference]: Finished difference Result 448 states and 522 transitions. [2020-10-14 05:34:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:34:28,430 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-14 05:34:28,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:28,432 INFO L225 Difference]: With dead ends: 448 [2020-10-14 05:34:28,432 INFO L226 Difference]: Without dead ends: 301 [2020-10-14 05:34:28,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:34:28,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-14 05:34:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 283. [2020-10-14 05:34:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-14 05:34:28,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 330 transitions. [2020-10-14 05:34:28,472 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 330 transitions. Word has length 45 [2020-10-14 05:34:28,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:28,472 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 330 transitions. [2020-10-14 05:34:28,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:34:28,473 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 330 transitions. [2020-10-14 05:34:28,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 05:34:28,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:28,476 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:28,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 05:34:28,476 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:28,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:28,477 INFO L82 PathProgramCache]: Analyzing trace with hash 167156985, now seen corresponding path program 33 times [2020-10-14 05:34:28,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:28,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969185286] [2020-10-14 05:34:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:28,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:28,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:28,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 05:34:28,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-14 05:34:28,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:28,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:34:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 05:34:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:34:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:28,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:28,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:28,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:28,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:28,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:28,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:28,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:28,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:28,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:28,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:28,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:28,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:28,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:28,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:28,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:34:28,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:28,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:28,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:28,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:34:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:28,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:28,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:34:28,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:28,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 05:34:28,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:28,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:34:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:34:28,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 05:34:28,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969185286] [2020-10-14 05:34:28,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:28,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:34:28,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179805666] [2020-10-14 05:34:28,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:34:28,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:28,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:34:28,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:34:28,849 INFO L87 Difference]: Start difference. First operand 283 states and 330 transitions. Second operand 10 states. [2020-10-14 05:34:29,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:29,089 INFO L93 Difference]: Finished difference Result 369 states and 435 transitions. [2020-10-14 05:34:29,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:34:29,089 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-14 05:34:29,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:29,092 INFO L225 Difference]: With dead ends: 369 [2020-10-14 05:34:29,092 INFO L226 Difference]: Without dead ends: 339 [2020-10-14 05:34:29,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:34:29,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-14 05:34:29,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 321. [2020-10-14 05:34:29,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-14 05:34:29,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 375 transitions. [2020-10-14 05:34:29,162 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 375 transitions. Word has length 45 [2020-10-14 05:34:29,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:29,162 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 375 transitions. [2020-10-14 05:34:29,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:34:29,162 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 375 transitions. [2020-10-14 05:34:29,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:34:29,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:29,169 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:29,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 05:34:29,169 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:29,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:29,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1799793138, now seen corresponding path program 34 times [2020-10-14 05:34:29,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:29,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157450850] [2020-10-14 05:34:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:29,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:29,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:29,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 05:34:29,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:29,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-14 05:34:29,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:29,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:29,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 05:34:29,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:29,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 05:34:29,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:29,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:29,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:29,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:29,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:29,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:29,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:29,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:29,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:29,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:29,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:29,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:29,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:29,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:34:29,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:29,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 05:34:29,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:29,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:34:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:34:29,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:30,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 05:34:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:30,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:30,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:30,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:34:30,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 05:34:30,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:30,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:34:30,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:30,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:34:30,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:34:30,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157450850] [2020-10-14 05:34:30,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:30,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 05:34:30,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778943991] [2020-10-14 05:34:30,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 05:34:30,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:30,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 05:34:30,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:34:30,426 INFO L87 Difference]: Start difference. First operand 321 states and 375 transitions. Second operand 28 states. [2020-10-14 05:34:31,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:31,313 INFO L93 Difference]: Finished difference Result 391 states and 456 transitions. [2020-10-14 05:34:31,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:34:31,314 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 46 [2020-10-14 05:34:31,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:31,317 INFO L225 Difference]: With dead ends: 391 [2020-10-14 05:34:31,317 INFO L226 Difference]: Without dead ends: 385 [2020-10-14 05:34:31,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=1309, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 05:34:31,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-14 05:34:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 337. [2020-10-14 05:34:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-14 05:34:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 394 transitions. [2020-10-14 05:34:31,362 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 394 transitions. Word has length 46 [2020-10-14 05:34:31,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:31,362 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 394 transitions. [2020-10-14 05:34:31,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 05:34:31,363 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 394 transitions. [2020-10-14 05:34:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:34:31,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:31,367 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:31,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 05:34:31,367 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:31,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:31,367 INFO L82 PathProgramCache]: Analyzing trace with hash 646206930, now seen corresponding path program 35 times [2020-10-14 05:34:31,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:31,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589324816] [2020-10-14 05:34:31,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:31,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:31,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:31,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 05:34:31,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:31,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-14 05:34:31,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:31,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:31,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 05:34:31,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 05:34:31,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:31,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:31,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:31,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:31,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:31,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:31,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:31,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:31,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:31,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:31,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:31,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:31,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:34:31,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:31,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 05:34:31,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:31,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:34:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:32,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 05:34:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:32,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:32,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:32,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:34:32,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:32,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:34:32,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:32,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:32,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:34:32,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:32,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:34:32,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:34:32,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589324816] [2020-10-14 05:34:32,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:32,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 05:34:32,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761549502] [2020-10-14 05:34:32,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 05:34:32,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:32,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 05:34:32,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:34:32,323 INFO L87 Difference]: Start difference. First operand 337 states and 394 transitions. Second operand 26 states. [2020-10-14 05:34:33,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:33,068 INFO L93 Difference]: Finished difference Result 343 states and 399 transitions. [2020-10-14 05:34:33,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 05:34:33,073 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 46 [2020-10-14 05:34:33,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:33,076 INFO L225 Difference]: With dead ends: 343 [2020-10-14 05:34:33,076 INFO L226 Difference]: Without dead ends: 321 [2020-10-14 05:34:33,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 05:34:33,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-14 05:34:33,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2020-10-14 05:34:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-14 05:34:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 376 transitions. [2020-10-14 05:34:33,116 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 376 transitions. Word has length 46 [2020-10-14 05:34:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:33,117 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 376 transitions. [2020-10-14 05:34:33,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 05:34:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 376 transitions. [2020-10-14 05:34:33,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:34:33,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:33,121 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:33,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 05:34:33,121 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:33,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:33,121 INFO L82 PathProgramCache]: Analyzing trace with hash -408449205, now seen corresponding path program 36 times [2020-10-14 05:34:33,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:33,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367172570] [2020-10-14 05:34:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:33,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:33,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 05:34:33,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:33,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 05:34:33,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:33,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:34:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 05:34:33,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:33,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:33,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:33,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:33,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:33,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:33,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:33,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:33,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:33,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:33,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:33,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:33,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:33,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:33,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:33,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:33,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:33,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:33,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 05:34:33,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:33,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:34:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:34:33,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:33,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:34:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:33,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:33,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:33,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:33,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:33,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 05:34:33,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:33,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:34:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:34:33,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 05:34:33,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367172570] [2020-10-14 05:34:33,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:33,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:34:33,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136595455] [2020-10-14 05:34:33,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:34:33,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:33,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:34:33,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:34:33,508 INFO L87 Difference]: Start difference. First operand 321 states and 376 transitions. Second operand 13 states. [2020-10-14 05:34:33,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:33,800 INFO L93 Difference]: Finished difference Result 377 states and 442 transitions. [2020-10-14 05:34:33,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:34:33,800 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-14 05:34:33,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:33,804 INFO L225 Difference]: With dead ends: 377 [2020-10-14 05:34:33,804 INFO L226 Difference]: Without dead ends: 361 [2020-10-14 05:34:33,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:34:33,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-14 05:34:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 356. [2020-10-14 05:34:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-14 05:34:33,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 415 transitions. [2020-10-14 05:34:33,851 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 415 transitions. Word has length 46 [2020-10-14 05:34:33,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:33,852 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 415 transitions. [2020-10-14 05:34:33,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:34:33,852 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 415 transitions. [2020-10-14 05:34:33,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:34:33,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:33,856 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:33,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 05:34:33,857 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:33,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:33,857 INFO L82 PathProgramCache]: Analyzing trace with hash -767547790, now seen corresponding path program 37 times [2020-10-14 05:34:33,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:33,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109946961] [2020-10-14 05:34:33,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:33,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:34,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:34,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 05:34:34,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:34,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 05:34:34,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:34,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 05:34:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 05:34:34,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:34,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:34,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:34,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:34,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:34,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:34,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:34,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:34,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:34,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:34,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:34,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:34,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:34:34,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:34,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:34:34,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:34,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:34:34,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:34,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 05:34:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:34,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:34,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:34,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:34:34,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:34,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:34:34,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:34,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:34,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:34:34,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 05:34:34,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109946961] [2020-10-14 05:34:34,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:34,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 05:34:34,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581847407] [2020-10-14 05:34:34,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 05:34:34,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:34,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 05:34:34,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:34:34,627 INFO L87 Difference]: Start difference. First operand 356 states and 415 transitions. Second operand 24 states. [2020-10-14 05:34:35,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:35,292 INFO L93 Difference]: Finished difference Result 374 states and 437 transitions. [2020-10-14 05:34:35,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:34:35,293 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2020-10-14 05:34:35,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:35,296 INFO L225 Difference]: With dead ends: 374 [2020-10-14 05:34:35,297 INFO L226 Difference]: Without dead ends: 358 [2020-10-14 05:34:35,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1301, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 05:34:35,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-14 05:34:35,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 353. [2020-10-14 05:34:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-10-14 05:34:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 413 transitions. [2020-10-14 05:34:35,347 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 413 transitions. Word has length 46 [2020-10-14 05:34:35,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:35,347 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 413 transitions. [2020-10-14 05:34:35,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 05:34:35,347 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 413 transitions. [2020-10-14 05:34:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:34:35,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:35,352 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:35,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 05:34:35,353 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:35,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:35,353 INFO L82 PathProgramCache]: Analyzing trace with hash -772788601, now seen corresponding path program 38 times [2020-10-14 05:34:35,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:35,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104079627] [2020-10-14 05:34:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:35,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:35,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:35,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 05:34:35,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:35,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 05:34:35,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:35,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:34:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:34:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:35,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:35,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:35,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:35,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:35,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:35,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:35,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:35,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:35,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:35,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:35,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:35,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:35,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:35,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:35,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 05:34:35,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:35,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:34:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:34:35,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:35,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:34:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:35,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:35,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:35,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:34:35,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:35,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 05:34:35,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:35,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:34:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:35,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:34:35,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 05:34:35,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104079627] [2020-10-14 05:34:35,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:35,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:34:35,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740874231] [2020-10-14 05:34:35,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:34:35,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:35,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:34:35,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:34:35,805 INFO L87 Difference]: Start difference. First operand 353 states and 413 transitions. Second operand 13 states. [2020-10-14 05:34:36,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:36,224 INFO L93 Difference]: Finished difference Result 367 states and 426 transitions. [2020-10-14 05:34:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:34:36,225 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-14 05:34:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:36,231 INFO L225 Difference]: With dead ends: 367 [2020-10-14 05:34:36,231 INFO L226 Difference]: Without dead ends: 345 [2020-10-14 05:34:36,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:34:36,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-14 05:34:36,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2020-10-14 05:34:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-14 05:34:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 397 transitions. [2020-10-14 05:34:36,300 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 397 transitions. Word has length 46 [2020-10-14 05:34:36,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:36,300 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 397 transitions. [2020-10-14 05:34:36,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:34:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 397 transitions. [2020-10-14 05:34:36,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 05:34:36,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:36,307 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:36,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 05:34:36,307 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:36,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:36,308 INFO L82 PathProgramCache]: Analyzing trace with hash -76259425, now seen corresponding path program 39 times [2020-10-14 05:34:36,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:36,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016696415] [2020-10-14 05:34:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:36,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:36,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:36,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 05:34:36,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:36,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-14 05:34:36,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:36,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:36,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:34:36,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:36,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 05:34:36,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:36,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:36,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:36,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:36,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:36,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:36,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:36,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:36,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:36,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:36,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:36,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:34:36,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:36,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:34:36,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:36,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:36,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:34:36,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:36,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 05:34:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:36,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:36,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:36,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:36,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:36,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 05:34:36,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:36,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:34:36,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:37,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016696415] [2020-10-14 05:34:37,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:37,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 05:34:37,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228410967] [2020-10-14 05:34:37,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 05:34:37,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:37,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 05:34:37,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:34:37,124 INFO L87 Difference]: Start difference. First operand 343 states and 397 transitions. Second operand 19 states. [2020-10-14 05:34:37,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:37,779 INFO L93 Difference]: Finished difference Result 409 states and 476 transitions. [2020-10-14 05:34:37,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:34:37,780 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-10-14 05:34:37,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:37,783 INFO L225 Difference]: With dead ends: 409 [2020-10-14 05:34:37,783 INFO L226 Difference]: Without dead ends: 395 [2020-10-14 05:34:37,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:34:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-14 05:34:37,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 386. [2020-10-14 05:34:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-14 05:34:37,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 448 transitions. [2020-10-14 05:34:37,832 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 448 transitions. Word has length 47 [2020-10-14 05:34:37,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:37,832 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 448 transitions. [2020-10-14 05:34:37,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 05:34:37,832 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 448 transitions. [2020-10-14 05:34:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 05:34:37,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:37,837 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:37,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 05:34:37,837 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:37,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:37,837 INFO L82 PathProgramCache]: Analyzing trace with hash -514301896, now seen corresponding path program 40 times [2020-10-14 05:34:37,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:37,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527861847] [2020-10-14 05:34:37,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:37,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:38,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:38,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 05:34:38,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:38,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-14 05:34:38,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:38,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:38,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:34:38,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:38,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 05:34:38,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:38,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:38,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:38,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:38,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:38,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:38,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:38,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:38,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:38,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:38,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:38,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:38,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:38,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:38,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:38,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:38,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 05:34:38,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:38,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:38,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:38,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:38,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:34:38,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:38,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:34:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:38,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:38,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:38,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:34:38,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:38,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 05:34:38,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:38,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:34:38,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:38,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527861847] [2020-10-14 05:34:38,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:38,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 05:34:38,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656439755] [2020-10-14 05:34:38,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 05:34:38,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:38,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 05:34:38,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:34:38,534 INFO L87 Difference]: Start difference. First operand 386 states and 448 transitions. Second operand 19 states. [2020-10-14 05:34:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:39,148 INFO L93 Difference]: Finished difference Result 401 states and 463 transitions. [2020-10-14 05:34:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:34:39,148 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-10-14 05:34:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:39,151 INFO L225 Difference]: With dead ends: 401 [2020-10-14 05:34:39,151 INFO L226 Difference]: Without dead ends: 389 [2020-10-14 05:34:39,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:34:39,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-14 05:34:39,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 387. [2020-10-14 05:34:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-14 05:34:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 446 transitions. [2020-10-14 05:34:39,201 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 446 transitions. Word has length 47 [2020-10-14 05:34:39,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:39,202 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 446 transitions. [2020-10-14 05:34:39,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 05:34:39,202 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 446 transitions. [2020-10-14 05:34:39,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 05:34:39,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:39,206 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:39,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 05:34:39,207 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:39,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:39,207 INFO L82 PathProgramCache]: Analyzing trace with hash 704504217, now seen corresponding path program 41 times [2020-10-14 05:34:39,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:39,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365369017] [2020-10-14 05:34:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:39,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:39,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 05:34:39,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:39,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 05:34:39,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:39,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 05:34:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:34:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:39,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:39,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:39,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:39,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:39,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:39,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:39,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:39,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:39,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:39,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:39,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:39,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:39,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:39,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:34:39,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:39,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:39,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:39,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:39,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:39,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:39,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:34:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:39,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:34:39,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:39,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 05:34:39,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:39,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:34:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 05:34:39,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365369017] [2020-10-14 05:34:39,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:39,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:34:39,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546152009] [2020-10-14 05:34:39,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:34:39,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:39,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:34:39,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:34:39,520 INFO L87 Difference]: Start difference. First operand 387 states and 446 transitions. Second operand 11 states. [2020-10-14 05:34:39,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:39,734 INFO L93 Difference]: Finished difference Result 413 states and 476 transitions. [2020-10-14 05:34:39,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:34:39,735 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-14 05:34:39,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:39,738 INFO L225 Difference]: With dead ends: 413 [2020-10-14 05:34:39,738 INFO L226 Difference]: Without dead ends: 386 [2020-10-14 05:34:39,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:34:39,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-14 05:34:39,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 374. [2020-10-14 05:34:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-14 05:34:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 427 transitions. [2020-10-14 05:34:39,791 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 427 transitions. Word has length 47 [2020-10-14 05:34:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:39,791 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 427 transitions. [2020-10-14 05:34:39,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:34:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 427 transitions. [2020-10-14 05:34:39,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 05:34:39,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:39,796 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:39,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 05:34:39,796 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:39,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:39,796 INFO L82 PathProgramCache]: Analyzing trace with hash 551076162, now seen corresponding path program 42 times [2020-10-14 05:34:39,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:39,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765097087] [2020-10-14 05:34:39,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:39,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:39,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 05:34:39,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:39,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 05:34:39,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:39,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:39,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:39,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:39,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:34:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:39,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:39,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:39,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:39,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:39,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:39,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:39,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:39,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:39,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:39,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:39,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:39,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:34:39,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:34:39,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:39,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:34:39,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:40,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 05:34:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:40,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:40,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:40,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:40,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:40,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:34:40,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:40,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:40,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:40,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:34:40,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:40,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:40,048 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 05:34:40,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765097087] [2020-10-14 05:34:40,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:40,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:34:40,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276981225] [2020-10-14 05:34:40,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:34:40,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:40,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:34:40,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:34:40,050 INFO L87 Difference]: Start difference. First operand 374 states and 427 transitions. Second operand 11 states. [2020-10-14 05:34:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:40,245 INFO L93 Difference]: Finished difference Result 590 states and 667 transitions. [2020-10-14 05:34:40,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:34:40,245 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-14 05:34:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:40,248 INFO L225 Difference]: With dead ends: 590 [2020-10-14 05:34:40,248 INFO L226 Difference]: Without dead ends: 381 [2020-10-14 05:34:40,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:34:40,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-14 05:34:40,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2020-10-14 05:34:40,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-14 05:34:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 434 transitions. [2020-10-14 05:34:40,300 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 434 transitions. Word has length 47 [2020-10-14 05:34:40,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:40,300 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 434 transitions. [2020-10-14 05:34:40,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:34:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 434 transitions. [2020-10-14 05:34:40,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 05:34:40,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:40,304 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:40,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 05:34:40,304 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:40,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:40,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1201238553, now seen corresponding path program 43 times [2020-10-14 05:34:40,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:40,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000923675] [2020-10-14 05:34:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:40,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:40,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:40,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 05:34:40,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:40,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-14 05:34:40,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:40,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:40,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:34:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 05:34:40,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:40,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:40,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:40,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:40,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:40,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:40,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:40,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:40,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:40,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:40,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:40,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:40,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:40,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:40,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:40,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:40,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:40,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:40,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 05:34:40,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:40,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:40,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:34:40,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:40,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:34:40,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:41,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:34:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:41,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:41,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:41,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:41,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:41,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 05:34:41,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:41,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:41,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:34:41,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:41,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:34:41,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:34:41,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000923675] [2020-10-14 05:34:41,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:41,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 05:34:41,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861039395] [2020-10-14 05:34:41,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 05:34:41,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:41,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 05:34:41,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:34:41,505 INFO L87 Difference]: Start difference. First operand 381 states and 434 transitions. Second operand 30 states. [2020-10-14 05:34:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:42,548 INFO L93 Difference]: Finished difference Result 459 states and 523 transitions. [2020-10-14 05:34:42,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 05:34:42,548 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 48 [2020-10-14 05:34:42,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:42,552 INFO L225 Difference]: With dead ends: 459 [2020-10-14 05:34:42,552 INFO L226 Difference]: Without dead ends: 453 [2020-10-14 05:34:42,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=1459, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 05:34:42,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-10-14 05:34:42,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 397. [2020-10-14 05:34:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-14 05:34:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 453 transitions. [2020-10-14 05:34:42,609 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 453 transitions. Word has length 48 [2020-10-14 05:34:42,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:42,609 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 453 transitions. [2020-10-14 05:34:42,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 05:34:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 453 transitions. [2020-10-14 05:34:42,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 05:34:42,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:42,614 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:42,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 05:34:42,614 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:42,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:42,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1180334297, now seen corresponding path program 44 times [2020-10-14 05:34:42,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:42,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510390531] [2020-10-14 05:34:42,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:42,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:43,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:43,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 05:34:43,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:43,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-14 05:34:43,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:43,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 05:34:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 05:34:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:43,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:43,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:43,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:43,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:43,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:43,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:43,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:43,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:43,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:43,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:43,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:43,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:43,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:43,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:43,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 05:34:43,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:43,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:34:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:34:43,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:43,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:34:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:43,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:43,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:43,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:43,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 05:34:43,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:43,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:34:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:34:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:34:43,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510390531] [2020-10-14 05:34:43,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:43,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 05:34:43,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77289755] [2020-10-14 05:34:43,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 05:34:43,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:43,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 05:34:43,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:34:43,673 INFO L87 Difference]: Start difference. First operand 397 states and 453 transitions. Second operand 28 states. [2020-10-14 05:34:44,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:44,604 INFO L93 Difference]: Finished difference Result 403 states and 458 transitions. [2020-10-14 05:34:44,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:34:44,605 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 48 [2020-10-14 05:34:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:44,607 INFO L225 Difference]: With dead ends: 403 [2020-10-14 05:34:44,607 INFO L226 Difference]: Without dead ends: 381 [2020-10-14 05:34:44,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=1455, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 05:34:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-14 05:34:44,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2020-10-14 05:34:44,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-14 05:34:44,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 435 transitions. [2020-10-14 05:34:44,657 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 435 transitions. Word has length 48 [2020-10-14 05:34:44,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:44,657 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 435 transitions. [2020-10-14 05:34:44,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 05:34:44,657 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 435 transitions. [2020-10-14 05:34:44,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 05:34:44,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:44,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:44,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 05:34:44,661 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:44,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:44,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1281576423, now seen corresponding path program 45 times [2020-10-14 05:34:44,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:44,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967570299] [2020-10-14 05:34:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:44,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:44,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:44,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 05:34:44,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:44,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-14 05:34:44,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:44,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:44,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 05:34:44,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:44,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 05:34:44,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:45,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:45,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:45,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:45,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:45,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:45,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:45,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:45,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:45,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:45,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:45,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:45,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:45,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:45,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:45,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 05:34:45,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:45,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:45,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:34:45,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:45,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:34:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:45,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:45,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:45,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:45,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 05:34:45,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:45,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:34:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:34:45,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 05:34:45,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967570299] [2020-10-14 05:34:45,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:45,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 05:34:45,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434754297] [2020-10-14 05:34:45,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 05:34:45,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:45,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 05:34:45,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:34:45,616 INFO L87 Difference]: Start difference. First operand 381 states and 435 transitions. Second operand 26 states. [2020-10-14 05:34:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:46,470 INFO L93 Difference]: Finished difference Result 387 states and 440 transitions. [2020-10-14 05:34:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 05:34:46,471 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 48 [2020-10-14 05:34:46,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:46,472 INFO L225 Difference]: With dead ends: 387 [2020-10-14 05:34:46,472 INFO L226 Difference]: Without dead ends: 363 [2020-10-14 05:34:46,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=1451, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 05:34:46,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-14 05:34:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2020-10-14 05:34:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-14 05:34:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 415 transitions. [2020-10-14 05:34:46,516 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 415 transitions. Word has length 48 [2020-10-14 05:34:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:46,517 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 415 transitions. [2020-10-14 05:34:46,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 05:34:46,517 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 415 transitions. [2020-10-14 05:34:46,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 05:34:46,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:46,520 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:46,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 05:34:46,520 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:46,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:46,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1596835623, now seen corresponding path program 46 times [2020-10-14 05:34:46,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:46,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626662312] [2020-10-14 05:34:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:46,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:46,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:46,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 05:34:46,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:46,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-14 05:34:46,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:46,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 05:34:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 05:34:46,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:47,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:47,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:47,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:47,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:47,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:47,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:47,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:47,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:47,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:47,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:47,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:34:47,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:47,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:47,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:47,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 05:34:47,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:47,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:47,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:34:47,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:47,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:34:47,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:47,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:34:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:47,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:47,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:47,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:47,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:34:47,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:47,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:34:47,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 05:34:47,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626662312] [2020-10-14 05:34:47,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:47,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 05:34:47,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846364641] [2020-10-14 05:34:47,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 05:34:47,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:47,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 05:34:47,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:34:47,547 INFO L87 Difference]: Start difference. First operand 363 states and 415 transitions. Second operand 24 states. [2020-10-14 05:34:48,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:48,265 INFO L93 Difference]: Finished difference Result 381 states and 436 transitions. [2020-10-14 05:34:48,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:34:48,265 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 48 [2020-10-14 05:34:48,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:48,268 INFO L225 Difference]: With dead ends: 381 [2020-10-14 05:34:48,268 INFO L226 Difference]: Without dead ends: 375 [2020-10-14 05:34:48,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 05:34:48,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-14 05:34:48,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2020-10-14 05:34:48,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-10-14 05:34:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 428 transitions. [2020-10-14 05:34:48,322 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 428 transitions. Word has length 48 [2020-10-14 05:34:48,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:48,322 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 428 transitions. [2020-10-14 05:34:48,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 05:34:48,322 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 428 transitions. [2020-10-14 05:34:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:34:48,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:48,326 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:48,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 05:34:48,326 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:48,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:48,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1451582376, now seen corresponding path program 47 times [2020-10-14 05:34:48,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:48,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188701769] [2020-10-14 05:34:48,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:48,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:48,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:48,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 05:34:48,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:48,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 05:34:48,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:48,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 05:34:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 05:34:48,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:48,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:48,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:48,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:48,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:48,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:48,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:48,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:48,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:48,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:48,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:48,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:48,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 05:34:48,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:48,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:34:48,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:48,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:34:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:48,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:48,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:48,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:34:48,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:48,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 05:34:48,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:48,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:48,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:48,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:34:48,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:49,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188701769] [2020-10-14 05:34:49,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:49,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:34:49,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332376436] [2020-10-14 05:34:49,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:34:49,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:49,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:34:49,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:34:49,080 INFO L87 Difference]: Start difference. First operand 373 states and 428 transitions. Second operand 21 states. [2020-10-14 05:34:49,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:49,857 INFO L93 Difference]: Finished difference Result 441 states and 509 transitions. [2020-10-14 05:34:49,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:34:49,859 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 49 [2020-10-14 05:34:49,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:49,862 INFO L225 Difference]: With dead ends: 441 [2020-10-14 05:34:49,862 INFO L226 Difference]: Without dead ends: 427 [2020-10-14 05:34:49,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:34:49,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-14 05:34:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 418. [2020-10-14 05:34:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-14 05:34:49,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 481 transitions. [2020-10-14 05:34:49,917 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 481 transitions. Word has length 49 [2020-10-14 05:34:49,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:49,917 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 481 transitions. [2020-10-14 05:34:49,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:34:49,918 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 481 transitions. [2020-10-14 05:34:49,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:34:49,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:49,922 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:49,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 05:34:49,923 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:49,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:49,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2145997089, now seen corresponding path program 48 times [2020-10-14 05:34:49,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:49,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940559451] [2020-10-14 05:34:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:49,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:50,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:50,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 05:34:50,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:50,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-14 05:34:50,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:50,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 05:34:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 05:34:50,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:50,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:50,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:50,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:50,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:50,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:50,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:50,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:50,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:50,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:50,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:50,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:50,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:50,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:34:50,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:50,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 05:34:50,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:50,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:50,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:50,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:50,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:34:50,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:50,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 05:34:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:50,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:50,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:50,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:50,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:50,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 05:34:50,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:50,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:34:50,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:34:50,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940559451] [2020-10-14 05:34:50,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:50,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:34:50,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717782360] [2020-10-14 05:34:50,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:34:50,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:50,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:34:50,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:34:50,688 INFO L87 Difference]: Start difference. First operand 418 states and 481 transitions. Second operand 21 states. [2020-10-14 05:34:51,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:51,437 INFO L93 Difference]: Finished difference Result 433 states and 496 transitions. [2020-10-14 05:34:51,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 05:34:51,438 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 49 [2020-10-14 05:34:51,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:51,441 INFO L225 Difference]: With dead ends: 433 [2020-10-14 05:34:51,441 INFO L226 Difference]: Without dead ends: 421 [2020-10-14 05:34:51,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:34:51,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-14 05:34:51,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2020-10-14 05:34:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-10-14 05:34:51,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 479 transitions. [2020-10-14 05:34:51,497 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 479 transitions. Word has length 49 [2020-10-14 05:34:51,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:51,498 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 479 transitions. [2020-10-14 05:34:51,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:34:51,498 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 479 transitions. [2020-10-14 05:34:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:34:51,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:51,502 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:51,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 05:34:51,502 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:51,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:51,502 INFO L82 PathProgramCache]: Analyzing trace with hash 537375778, now seen corresponding path program 49 times [2020-10-14 05:34:51,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:51,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695896699] [2020-10-14 05:34:51,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:51,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:51,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:51,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 05:34:51,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:51,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 05:34:51,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:51,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:34:51,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:51,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:51,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:51,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:51,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:51,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:51,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:51,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:51,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:51,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:51,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:51,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:51,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:51,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:51,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:51,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:51,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:34:51,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:51,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:34:51,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:51,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:34:51,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:51,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 05:34:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:51,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:51,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:51,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:51,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:34:51,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:51,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:34:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:51,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:51,745 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 05:34:51,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695896699] [2020-10-14 05:34:51,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:51,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:34:51,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245432823] [2020-10-14 05:34:51,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:34:51,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:51,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:34:51,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:34:51,746 INFO L87 Difference]: Start difference. First operand 419 states and 479 transitions. Second operand 12 states. [2020-10-14 05:34:51,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:51,992 INFO L93 Difference]: Finished difference Result 740 states and 845 transitions. [2020-10-14 05:34:51,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 05:34:51,993 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-14 05:34:51,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:51,996 INFO L225 Difference]: With dead ends: 740 [2020-10-14 05:34:51,996 INFO L226 Difference]: Without dead ends: 501 [2020-10-14 05:34:52,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=425, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:34:52,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-10-14 05:34:52,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 477. [2020-10-14 05:34:52,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-14 05:34:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 546 transitions. [2020-10-14 05:34:52,074 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 546 transitions. Word has length 49 [2020-10-14 05:34:52,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:52,074 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 546 transitions. [2020-10-14 05:34:52,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:34:52,075 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 546 transitions. [2020-10-14 05:34:52,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:34:52,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:52,078 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:52,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 05:34:52,079 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:52,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:52,079 INFO L82 PathProgramCache]: Analyzing trace with hash 76073369, now seen corresponding path program 50 times [2020-10-14 05:34:52,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:52,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107916157] [2020-10-14 05:34:52,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:52,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:52,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 05:34:52,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:52,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 05:34:52,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:52,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 05:34:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:34:52,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:52,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:52,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:52,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:52,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:52,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:52,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:52,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:52,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:52,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:52,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:52,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:52,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:52,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:52,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:52,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:34:52,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:52,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:52,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:52,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:52,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:34:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:52,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:52,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:52,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:34:52,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:52,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:34:52,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:52,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:34:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:34:52,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 05:34:52,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107916157] [2020-10-14 05:34:52,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:52,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:34:52,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448694382] [2020-10-14 05:34:52,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:34:52,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:52,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:34:52,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:34:52,360 INFO L87 Difference]: Start difference. First operand 477 states and 546 transitions. Second operand 12 states. [2020-10-14 05:34:52,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:52,614 INFO L93 Difference]: Finished difference Result 597 states and 691 transitions. [2020-10-14 05:34:52,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 05:34:52,615 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-14 05:34:52,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:52,617 INFO L225 Difference]: With dead ends: 597 [2020-10-14 05:34:52,618 INFO L226 Difference]: Without dead ends: 559 [2020-10-14 05:34:52,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=425, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:34:52,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-14 05:34:52,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 535. [2020-10-14 05:34:52,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-10-14 05:34:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 613 transitions. [2020-10-14 05:34:52,684 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 613 transitions. Word has length 49 [2020-10-14 05:34:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:52,684 INFO L479 AbstractCegarLoop]: Abstraction has 535 states and 613 transitions. [2020-10-14 05:34:52,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:34:52,684 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 613 transitions. [2020-10-14 05:34:52,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:34:52,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:52,687 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:52,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 05:34:52,688 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:52,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:52,688 INFO L82 PathProgramCache]: Analyzing trace with hash -2136672174, now seen corresponding path program 51 times [2020-10-14 05:34:52,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:52,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888445912] [2020-10-14 05:34:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:52,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:53,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:53,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 05:34:53,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:53,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-14 05:34:53,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:53,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 05:34:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 05:34:53,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:53,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:53,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:53,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:53,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:53,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:53,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:53,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:53,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:53,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:53,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:53,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:53,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:34:53,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:53,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 05:34:53,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:53,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:53,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:34:53,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:53,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:34:53,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:53,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 05:34:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:53,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:53,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:53,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:34:53,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:53,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 05:34:53,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:53,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:34:53,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:53,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:34:53,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:34:53,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888445912] [2020-10-14 05:34:53,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:53,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:34:53,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971714028] [2020-10-14 05:34:53,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:34:53,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:53,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:34:53,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:34:53,877 INFO L87 Difference]: Start difference. First operand 535 states and 613 transitions. Second operand 32 states. [2020-10-14 05:34:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:55,067 INFO L93 Difference]: Finished difference Result 627 states and 718 transitions. [2020-10-14 05:34:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 05:34:55,067 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 50 [2020-10-14 05:34:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:55,070 INFO L225 Difference]: With dead ends: 627 [2020-10-14 05:34:55,070 INFO L226 Difference]: Without dead ends: 621 [2020-10-14 05:34:55,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=1617, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 05:34:55,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-10-14 05:34:55,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 551. [2020-10-14 05:34:55,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-10-14 05:34:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 632 transitions. [2020-10-14 05:34:55,132 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 632 transitions. Word has length 50 [2020-10-14 05:34:55,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:55,132 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 632 transitions. [2020-10-14 05:34:55,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:34:55,132 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 632 transitions. [2020-10-14 05:34:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:34:55,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:55,135 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:55,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 05:34:55,135 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:55,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:55,135 INFO L82 PathProgramCache]: Analyzing trace with hash 36260018, now seen corresponding path program 52 times [2020-10-14 05:34:55,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:55,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907894582] [2020-10-14 05:34:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:55,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:55,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:55,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 05:34:55,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:55,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-14 05:34:55,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:55,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:34:55,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:55,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 05:34:55,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:55,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:55,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:55,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:55,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:55,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:55,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:55,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:55,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:55,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:55,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:55,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:55,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:55,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:55,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:34:55,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:55,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 05:34:55,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:55,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:34:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:34:55,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 05:34:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:55,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:55,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:55,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:34:55,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:55,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 05:34:55,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:55,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:34:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:55,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:34:55,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:34:56,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907894582] [2020-10-14 05:34:56,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:56,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 05:34:56,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343766836] [2020-10-14 05:34:56,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 05:34:56,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:56,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 05:34:56,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:34:56,220 INFO L87 Difference]: Start difference. First operand 551 states and 632 transitions. Second operand 30 states. [2020-10-14 05:34:57,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:57,292 INFO L93 Difference]: Finished difference Result 557 states and 637 transitions. [2020-10-14 05:34:57,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 05:34:57,293 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 50 [2020-10-14 05:34:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:57,296 INFO L225 Difference]: With dead ends: 557 [2020-10-14 05:34:57,296 INFO L226 Difference]: Without dead ends: 535 [2020-10-14 05:34:57,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=1613, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 05:34:57,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-14 05:34:57,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2020-10-14 05:34:57,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-10-14 05:34:57,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 614 transitions. [2020-10-14 05:34:57,348 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 614 transitions. Word has length 50 [2020-10-14 05:34:57,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:57,348 INFO L479 AbstractCegarLoop]: Abstraction has 535 states and 614 transitions. [2020-10-14 05:34:57,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 05:34:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 614 transitions. [2020-10-14 05:34:57,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:34:57,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:57,352 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:57,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 05:34:57,352 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:57,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:57,352 INFO L82 PathProgramCache]: Analyzing trace with hash 873190610, now seen corresponding path program 53 times [2020-10-14 05:34:57,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:57,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390321381] [2020-10-14 05:34:57,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:57,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:57,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:57,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 05:34:57,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:57,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-14 05:34:57,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:57,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:57,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 05:34:57,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:34:57,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 05:34:57,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:57,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:57,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:57,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:57,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:57,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:57,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:57,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:57,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:57,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:57,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:57,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:57,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:57,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:34:57,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:57,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 05:34:57,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:57,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:34:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:34:57,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:58,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 05:34:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:58,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:58,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:34:58,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:58,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 05:34:58,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:58,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:34:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:34:58,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 05:34:58,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390321381] [2020-10-14 05:34:58,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:58,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 05:34:58,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956684687] [2020-10-14 05:34:58,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 05:34:58,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:58,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 05:34:58,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:34:58,425 INFO L87 Difference]: Start difference. First operand 535 states and 614 transitions. Second operand 28 states. [2020-10-14 05:34:59,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:59,379 INFO L93 Difference]: Finished difference Result 541 states and 619 transitions. [2020-10-14 05:34:59,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:34:59,387 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 50 [2020-10-14 05:34:59,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:59,390 INFO L225 Difference]: With dead ends: 541 [2020-10-14 05:34:59,390 INFO L226 Difference]: Without dead ends: 517 [2020-10-14 05:34:59,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=1609, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 05:34:59,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-10-14 05:34:59,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 517. [2020-10-14 05:34:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2020-10-14 05:34:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 594 transitions. [2020-10-14 05:34:59,477 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 594 transitions. Word has length 50 [2020-10-14 05:34:59,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:59,478 INFO L479 AbstractCegarLoop]: Abstraction has 517 states and 594 transitions. [2020-10-14 05:34:59,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 05:34:59,478 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 594 transitions. [2020-10-14 05:34:59,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:34:59,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:59,481 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:59,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 05:34:59,481 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:59,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:59,482 INFO L82 PathProgramCache]: Analyzing trace with hash -423467705, now seen corresponding path program 54 times [2020-10-14 05:34:59,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:59,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884568049] [2020-10-14 05:34:59,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:59,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:59,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:59,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 05:34:59,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 05:34:59,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:59,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:34:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:34:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:34:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:59,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:59,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:59,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:59,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:59,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:59,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:59,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:59,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:59,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:59,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:59,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:59,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:34:59,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:59,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 05:34:59,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:59,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:59,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:59,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:59,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:34:59,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:59,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:34:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:59,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:59,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:34:59,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:59,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 05:34:59,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:59,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:59,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:34:59,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:59,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:34:59,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 05:34:59,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884568049] [2020-10-14 05:34:59,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:59,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 05:34:59,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702941962] [2020-10-14 05:34:59,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:34:59,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:59,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:34:59,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:34:59,920 INFO L87 Difference]: Start difference. First operand 517 states and 594 transitions. Second operand 15 states. [2020-10-14 05:35:00,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:00,372 INFO L93 Difference]: Finished difference Result 589 states and 680 transitions. [2020-10-14 05:35:00,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:35:00,373 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-14 05:35:00,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:00,377 INFO L225 Difference]: With dead ends: 589 [2020-10-14 05:35:00,377 INFO L226 Difference]: Without dead ends: 572 [2020-10-14 05:35:00,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:35:00,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-10-14 05:35:00,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 567. [2020-10-14 05:35:00,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-10-14 05:35:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 650 transitions. [2020-10-14 05:35:00,438 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 650 transitions. Word has length 50 [2020-10-14 05:35:00,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:00,438 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 650 transitions. [2020-10-14 05:35:00,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:35:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 650 transitions. [2020-10-14 05:35:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:35:00,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:00,440 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:00,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 05:35:00,441 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:00,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:00,441 INFO L82 PathProgramCache]: Analyzing trace with hash 2088889394, now seen corresponding path program 55 times [2020-10-14 05:35:00,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:00,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398910613] [2020-10-14 05:35:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:00,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:00,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:00,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 05:35:00,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:00,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-14 05:35:00,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:00,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 05:35:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 05:35:00,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:00,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:00,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:00,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:00,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:00,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:00,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:00,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:00,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:00,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:00,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:00,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:00,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:00,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:35:00,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:00,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 05:35:00,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:00,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:35:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:35:00,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:00,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 05:35:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:01,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:01,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:35:01,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:01,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 05:35:01,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:01,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:01,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:35:01,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:01,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:35:01,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 05:35:01,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398910613] [2020-10-14 05:35:01,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:01,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 05:35:01,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847648694] [2020-10-14 05:35:01,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 05:35:01,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:01,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 05:35:01,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:35:01,316 INFO L87 Difference]: Start difference. First operand 567 states and 650 transitions. Second operand 26 states. [2020-10-14 05:35:02,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:02,220 INFO L93 Difference]: Finished difference Result 585 states and 672 transitions. [2020-10-14 05:35:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 05:35:02,220 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2020-10-14 05:35:02,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:02,224 INFO L225 Difference]: With dead ends: 585 [2020-10-14 05:35:02,224 INFO L226 Difference]: Without dead ends: 568 [2020-10-14 05:35:02,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=1605, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 05:35:02,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-10-14 05:35:02,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 563. [2020-10-14 05:35:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-10-14 05:35:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 647 transitions. [2020-10-14 05:35:02,306 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 647 transitions. Word has length 50 [2020-10-14 05:35:02,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:02,306 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 647 transitions. [2020-10-14 05:35:02,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 05:35:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 647 transitions. [2020-10-14 05:35:02,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:35:02,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:02,310 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:02,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 05:35:02,310 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:02,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:02,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1544738101, now seen corresponding path program 56 times [2020-10-14 05:35:02,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:02,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132353570] [2020-10-14 05:35:02,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:02,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:02,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 05:35:02,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:02,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 05:35:02,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:02,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:02,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:35:02,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:35:02,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 05:35:02,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:02,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:02,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:02,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:02,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:02,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:02,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:02,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:02,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:02,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:02,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:02,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:02,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:02,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:02,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:02,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 05:35:02,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:02,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:35:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:35:02,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:02,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 05:35:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:02,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:02,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:02,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:35:02,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:02,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:35:02,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:02,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:35:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:35:02,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 05:35:02,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132353570] [2020-10-14 05:35:02,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:02,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 05:35:02,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540134774] [2020-10-14 05:35:02,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:35:02,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:02,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:35:02,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:35:02,758 INFO L87 Difference]: Start difference. First operand 563 states and 647 transitions. Second operand 15 states. [2020-10-14 05:35:03,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:03,196 INFO L93 Difference]: Finished difference Result 577 states and 660 transitions. [2020-10-14 05:35:03,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:35:03,197 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-14 05:35:03,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:03,201 INFO L225 Difference]: With dead ends: 577 [2020-10-14 05:35:03,201 INFO L226 Difference]: Without dead ends: 553 [2020-10-14 05:35:03,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:35:03,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-10-14 05:35:03,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 551. [2020-10-14 05:35:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-10-14 05:35:03,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 627 transitions. [2020-10-14 05:35:03,266 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 627 transitions. Word has length 50 [2020-10-14 05:35:03,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:03,267 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 627 transitions. [2020-10-14 05:35:03,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:35:03,267 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 627 transitions. [2020-10-14 05:35:03,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 05:35:03,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:03,271 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:03,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 05:35:03,271 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:03,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:03,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1847599809, now seen corresponding path program 57 times [2020-10-14 05:35:03,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:03,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271557157] [2020-10-14 05:35:03,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:03,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:03,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:03,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 05:35:03,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:03,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-14 05:35:03,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:03,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 05:35:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:35:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 05:35:03,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:03,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:03,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:03,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:03,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:03,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:03,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:03,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:03,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:03,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:03,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:03,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:35:03,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:03,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 05:35:03,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:03,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:35:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:35:03,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:03,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 05:35:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:03,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:03,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:03,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:03,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:03,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 05:35:03,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:03,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:35:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:35:03,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:04,155 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:35:04,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271557157] [2020-10-14 05:35:04,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:04,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 05:35:04,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616463653] [2020-10-14 05:35:04,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 05:35:04,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:04,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 05:35:04,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:35:04,157 INFO L87 Difference]: Start difference. First operand 551 states and 627 transitions. Second operand 23 states. [2020-10-14 05:35:05,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:05,157 INFO L93 Difference]: Finished difference Result 641 states and 734 transitions. [2020-10-14 05:35:05,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 05:35:05,160 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 51 [2020-10-14 05:35:05,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:05,164 INFO L225 Difference]: With dead ends: 641 [2020-10-14 05:35:05,164 INFO L226 Difference]: Without dead ends: 627 [2020-10-14 05:35:05,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:35:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-10-14 05:35:05,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 618. [2020-10-14 05:35:05,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-14 05:35:05,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 705 transitions. [2020-10-14 05:35:05,237 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 705 transitions. Word has length 51 [2020-10-14 05:35:05,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:05,237 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 705 transitions. [2020-10-14 05:35:05,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 05:35:05,238 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 705 transitions. [2020-10-14 05:35:05,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 05:35:05,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:05,242 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:05,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 05:35:05,242 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:05,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:05,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1899619432, now seen corresponding path program 58 times [2020-10-14 05:35:05,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:05,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124805377] [2020-10-14 05:35:05,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:05,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:05,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:05,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 05:35:05,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:05,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-14 05:35:05,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:05,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:05,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 05:35:05,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:35:05,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 05:35:05,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:05,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:05,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:05,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:05,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:05,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:05,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:05,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:05,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:05,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:05,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:05,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:05,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:05,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:05,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:05,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:05,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:05,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:05,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 05:35:05,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:05,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:35:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:35:05,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:05,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 05:35:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:05,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:05,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:05,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:35:05,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:05,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 05:35:05,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:05,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:35:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:35:05,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:06,054 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:35:06,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124805377] [2020-10-14 05:35:06,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:06,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 05:35:06,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297647183] [2020-10-14 05:35:06,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 05:35:06,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:06,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 05:35:06,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:35:06,056 INFO L87 Difference]: Start difference. First operand 618 states and 705 transitions. Second operand 23 states. [2020-10-14 05:35:07,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:07,033 INFO L93 Difference]: Finished difference Result 633 states and 720 transitions. [2020-10-14 05:35:07,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 05:35:07,034 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 51 [2020-10-14 05:35:07,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:07,038 INFO L225 Difference]: With dead ends: 633 [2020-10-14 05:35:07,038 INFO L226 Difference]: Without dead ends: 621 [2020-10-14 05:35:07,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:35:07,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-10-14 05:35:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 619. [2020-10-14 05:35:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2020-10-14 05:35:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 702 transitions. [2020-10-14 05:35:07,108 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 702 transitions. Word has length 51 [2020-10-14 05:35:07,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:07,109 INFO L479 AbstractCegarLoop]: Abstraction has 619 states and 702 transitions. [2020-10-14 05:35:07,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 05:35:07,109 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 702 transitions. [2020-10-14 05:35:07,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 05:35:07,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:07,114 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:07,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 05:35:07,114 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:07,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:07,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1937589319, now seen corresponding path program 59 times [2020-10-14 05:35:07,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:07,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595276945] [2020-10-14 05:35:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:07,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:07,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:07,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 05:35:07,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:07,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 05:35:07,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:07,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:35:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 05:35:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:35:07,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:07,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:07,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:07,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:07,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:07,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:07,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:07,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:07,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:07,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:07,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:07,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:07,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:07,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:07,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:07,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:35:07,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:07,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:07,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:07,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 05:35:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:07,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:07,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:07,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:35:07,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:07,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 05:35:07,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:07,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:35:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:35:07,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 05:35:07,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595276945] [2020-10-14 05:35:07,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:07,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:35:07,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846269762] [2020-10-14 05:35:07,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:35:07,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:07,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:35:07,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:35:07,396 INFO L87 Difference]: Start difference. First operand 619 states and 702 transitions. Second operand 13 states. [2020-10-14 05:35:07,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:07,720 INFO L93 Difference]: Finished difference Result 653 states and 742 transitions. [2020-10-14 05:35:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 05:35:07,721 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-14 05:35:07,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:07,724 INFO L225 Difference]: With dead ends: 653 [2020-10-14 05:35:07,724 INFO L226 Difference]: Without dead ends: 620 [2020-10-14 05:35:07,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=483, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:35:07,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-10-14 05:35:07,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 608. [2020-10-14 05:35:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-10-14 05:35:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 685 transitions. [2020-10-14 05:35:07,789 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 685 transitions. Word has length 51 [2020-10-14 05:35:07,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:07,789 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 685 transitions. [2020-10-14 05:35:07,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:35:07,789 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 685 transitions. [2020-10-14 05:35:07,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 05:35:07,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:07,792 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:07,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 05:35:07,792 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:07,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:07,792 INFO L82 PathProgramCache]: Analyzing trace with hash -544488514, now seen corresponding path program 60 times [2020-10-14 05:35:07,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:07,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41855075] [2020-10-14 05:35:07,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:07,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:07,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 05:35:07,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:07,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 05:35:07,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:07,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:07,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:35:07,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:07,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:35:07,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:07,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:07,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:07,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:07,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:07,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:07,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:07,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:07,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:07,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:07,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:07,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:07,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:07,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:35:07,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:07,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 05:35:07,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:07,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:07,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:35:07,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:07,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:35:07,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:08,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 05:35:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:08,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:08,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:08,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:08,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:35:08,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:08,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 05:35:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:08,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 05:35:08,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41855075] [2020-10-14 05:35:08,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:08,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:35:08,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981938667] [2020-10-14 05:35:08,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:35:08,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:08,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:35:08,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:35:08,070 INFO L87 Difference]: Start difference. First operand 608 states and 685 transitions. Second operand 13 states. [2020-10-14 05:35:08,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:08,411 INFO L93 Difference]: Finished difference Result 945 states and 1053 transitions. [2020-10-14 05:35:08,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 05:35:08,412 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-14 05:35:08,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:08,422 INFO L225 Difference]: With dead ends: 945 [2020-10-14 05:35:08,422 INFO L226 Difference]: Without dead ends: 617 [2020-10-14 05:35:08,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=483, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:35:08,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-10-14 05:35:08,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2020-10-14 05:35:08,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-10-14 05:35:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 694 transitions. [2020-10-14 05:35:08,533 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 694 transitions. Word has length 51 [2020-10-14 05:35:08,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:08,534 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 694 transitions. [2020-10-14 05:35:08,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:35:08,534 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 694 transitions. [2020-10-14 05:35:08,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:35:08,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:08,539 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:08,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 05:35:08,539 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:08,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:08,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1206067897, now seen corresponding path program 61 times [2020-10-14 05:35:08,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:08,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342673528] [2020-10-14 05:35:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:08,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:08,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:08,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 05:35:08,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:08,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-14 05:35:08,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:08,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 05:35:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:35:08,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:08,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:08,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:08,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:08,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:08,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:08,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:08,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:08,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:08,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:08,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:08,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:08,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:08,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:08,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:08,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:35:08,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:09,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:09,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:35:09,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:09,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:35:09,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:09,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 05:35:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:09,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:09,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:09,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:09,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:09,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:35:09,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:09,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:09,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:35:09,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:09,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:35:09,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:35:09,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342673528] [2020-10-14 05:35:09,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:09,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 05:35:09,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851189493] [2020-10-14 05:35:09,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 05:35:09,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:09,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 05:35:09,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:35:09,826 INFO L87 Difference]: Start difference. First operand 617 states and 694 transitions. Second operand 34 states. [2020-10-14 05:35:11,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:11,161 INFO L93 Difference]: Finished difference Result 717 states and 807 transitions. [2020-10-14 05:35:11,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 05:35:11,164 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 52 [2020-10-14 05:35:11,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:11,168 INFO L225 Difference]: With dead ends: 717 [2020-10-14 05:35:11,168 INFO L226 Difference]: Without dead ends: 711 [2020-10-14 05:35:11,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=109, Invalid=1783, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 05:35:11,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-10-14 05:35:11,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 633. [2020-10-14 05:35:11,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-10-14 05:35:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 713 transitions. [2020-10-14 05:35:11,245 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 713 transitions. Word has length 52 [2020-10-14 05:35:11,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:11,245 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 713 transitions. [2020-10-14 05:35:11,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 05:35:11,245 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 713 transitions. [2020-10-14 05:35:11,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:35:11,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:11,248 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:11,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 05:35:11,248 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:11,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:11,249 INFO L82 PathProgramCache]: Analyzing trace with hash -348617223, now seen corresponding path program 62 times [2020-10-14 05:35:11,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:11,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927035358] [2020-10-14 05:35:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:11,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:11,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:11,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 05:35:11,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:11,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-14 05:35:11,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:11,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 05:35:11,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:11,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:35:11,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:11,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:11,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:11,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:11,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:11,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:11,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:11,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:11,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:11,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:11,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:11,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:11,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:11,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:11,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:11,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:11,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:11,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:11,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:35:11,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:11,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:35:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:35:11,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:11,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 05:35:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:11,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:12,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:12,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:12,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:12,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 05:35:12,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:12,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:35:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:35:12,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:35:12,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927035358] [2020-10-14 05:35:12,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:12,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:35:12,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408410903] [2020-10-14 05:35:12,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:35:12,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:12,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:35:12,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:35:12,490 INFO L87 Difference]: Start difference. First operand 633 states and 713 transitions. Second operand 32 states. [2020-10-14 05:35:13,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:13,728 INFO L93 Difference]: Finished difference Result 639 states and 718 transitions. [2020-10-14 05:35:13,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 05:35:13,729 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 52 [2020-10-14 05:35:13,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:13,736 INFO L225 Difference]: With dead ends: 639 [2020-10-14 05:35:13,737 INFO L226 Difference]: Without dead ends: 617 [2020-10-14 05:35:13,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=113, Invalid=1779, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 05:35:13,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-10-14 05:35:13,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2020-10-14 05:35:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-10-14 05:35:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 695 transitions. [2020-10-14 05:35:13,821 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 695 transitions. Word has length 52 [2020-10-14 05:35:13,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:13,821 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 695 transitions. [2020-10-14 05:35:13,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:35:13,821 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 695 transitions. [2020-10-14 05:35:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:35:13,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:13,826 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:13,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 05:35:13,827 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:13,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:13,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1376969401, now seen corresponding path program 63 times [2020-10-14 05:35:13,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:13,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073406585] [2020-10-14 05:35:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:13,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:14,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:14,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 05:35:14,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:14,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-14 05:35:14,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:14,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:14,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:35:14,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:14,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:35:14,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:14,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:14,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:14,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:14,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:14,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:14,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:14,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:14,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:14,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:14,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:14,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:14,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:14,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:14,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:14,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 05:35:14,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:14,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:14,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:35:14,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:35:14,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:14,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 05:35:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:14,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:14,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:14,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:14,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:14,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 05:35:14,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:14,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:35:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:35:14,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 05:35:14,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073406585] [2020-10-14 05:35:14,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:14,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 05:35:14,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690512701] [2020-10-14 05:35:14,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 05:35:14,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:14,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 05:35:14,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:35:14,983 INFO L87 Difference]: Start difference. First operand 617 states and 695 transitions. Second operand 30 states. [2020-10-14 05:35:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:16,094 INFO L93 Difference]: Finished difference Result 623 states and 700 transitions. [2020-10-14 05:35:16,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 05:35:16,095 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 52 [2020-10-14 05:35:16,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:16,097 INFO L225 Difference]: With dead ends: 623 [2020-10-14 05:35:16,098 INFO L226 Difference]: Without dead ends: 599 [2020-10-14 05:35:16,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=1775, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 05:35:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-10-14 05:35:16,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2020-10-14 05:35:16,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-10-14 05:35:16,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 675 transitions. [2020-10-14 05:35:16,189 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 675 transitions. Word has length 52 [2020-10-14 05:35:16,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:16,189 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 675 transitions. [2020-10-14 05:35:16,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 05:35:16,190 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 675 transitions. [2020-10-14 05:35:16,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:35:16,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:16,192 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:16,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 05:35:16,192 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:16,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:16,192 INFO L82 PathProgramCache]: Analyzing trace with hash -46807559, now seen corresponding path program 64 times [2020-10-14 05:35:16,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:16,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468796599] [2020-10-14 05:35:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:16,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:16,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:16,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 05:35:16,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:16,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-14 05:35:16,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:16,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:16,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 05:35:16,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:16,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:35:16,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:16,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:16,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:16,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:16,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:16,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:16,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:16,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:16,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:16,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:16,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:16,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:16,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:16,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:16,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:16,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:16,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:16,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:16,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 05:35:16,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:16,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:35:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:35:16,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:16,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 05:35:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:16,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:16,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:16,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:16,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:16,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 05:35:16,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:16,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:35:16,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:16,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:35:16,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 05:35:17,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468796599] [2020-10-14 05:35:17,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:17,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 05:35:17,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869546565] [2020-10-14 05:35:17,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 05:35:17,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:17,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 05:35:17,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:35:17,200 INFO L87 Difference]: Start difference. First operand 599 states and 675 transitions. Second operand 28 states. [2020-10-14 05:35:18,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:18,190 INFO L93 Difference]: Finished difference Result 605 states and 680 transitions. [2020-10-14 05:35:18,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:35:18,191 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 52 [2020-10-14 05:35:18,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:18,194 INFO L225 Difference]: With dead ends: 605 [2020-10-14 05:35:18,194 INFO L226 Difference]: Without dead ends: 579 [2020-10-14 05:35:18,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=121, Invalid=1771, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 05:35:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2020-10-14 05:35:18,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2020-10-14 05:35:18,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-14 05:35:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 653 transitions. [2020-10-14 05:35:18,271 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 653 transitions. Word has length 52 [2020-10-14 05:35:18,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:18,271 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 653 transitions. [2020-10-14 05:35:18,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 05:35:18,272 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 653 transitions. [2020-10-14 05:35:18,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:35:18,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:18,274 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:18,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-14 05:35:18,274 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:18,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:18,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1897356615, now seen corresponding path program 65 times [2020-10-14 05:35:18,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:18,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388174317] [2020-10-14 05:35:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:18,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:18,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:18,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 05:35:18,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:18,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-14 05:35:18,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:18,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:18,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 05:35:18,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:18,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:35:18,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:18,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:18,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:18,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:18,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:18,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:18,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:18,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:18,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:18,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:18,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:18,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:18,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:18,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:18,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:18,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:18,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:18,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 05:35:18,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:18,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:35:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:35:18,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:18,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 05:35:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:18,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:18,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:18,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 05:35:18,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:18,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:35:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:35:18,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 05:35:19,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388174317] [2020-10-14 05:35:19,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:19,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 05:35:19,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385150170] [2020-10-14 05:35:19,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 05:35:19,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:19,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 05:35:19,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:35:19,234 INFO L87 Difference]: Start difference. First operand 579 states and 653 transitions. Second operand 26 states. [2020-10-14 05:35:20,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:20,107 INFO L93 Difference]: Finished difference Result 597 states and 674 transitions. [2020-10-14 05:35:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 05:35:20,107 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 52 [2020-10-14 05:35:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:20,111 INFO L225 Difference]: With dead ends: 597 [2020-10-14 05:35:20,111 INFO L226 Difference]: Without dead ends: 591 [2020-10-14 05:35:20,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=125, Invalid=1767, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 05:35:20,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-10-14 05:35:20,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 589. [2020-10-14 05:35:20,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-10-14 05:35:20,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 666 transitions. [2020-10-14 05:35:20,181 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 666 transitions. Word has length 52 [2020-10-14 05:35:20,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:20,181 INFO L479 AbstractCegarLoop]: Abstraction has 589 states and 666 transitions. [2020-10-14 05:35:20,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 05:35:20,181 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 666 transitions. [2020-10-14 05:35:20,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 05:35:20,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:20,183 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:20,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-14 05:35:20,184 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:20,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1301872712, now seen corresponding path program 66 times [2020-10-14 05:35:20,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:20,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379763652] [2020-10-14 05:35:20,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:20,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:20,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:20,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 05:35:20,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:20,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-14 05:35:20,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:20,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:20,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 05:35:20,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:35:20,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 05:35:20,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:20,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:20,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:20,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:20,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:20,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:20,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:20,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:20,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:20,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:20,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:20,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:20,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:20,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:20,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:20,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:20,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:20,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:20,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:35:20,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:20,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:35:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:35:20,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:20,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 05:35:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:20,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:20,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:20,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:20,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:20,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 05:35:20,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:20,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:20,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:35:20,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:20,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:35:20,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:35:21,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379763652] [2020-10-14 05:35:21,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:21,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 05:35:21,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158492013] [2020-10-14 05:35:21,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 05:35:21,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:21,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 05:35:21,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:35:21,128 INFO L87 Difference]: Start difference. First operand 589 states and 666 transitions. Second operand 25 states. [2020-10-14 05:35:22,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:22,324 INFO L93 Difference]: Finished difference Result 681 states and 775 transitions. [2020-10-14 05:35:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:35:22,325 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 53 [2020-10-14 05:35:22,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:22,330 INFO L225 Difference]: With dead ends: 681 [2020-10-14 05:35:22,330 INFO L226 Difference]: Without dead ends: 667 [2020-10-14 05:35:22,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:35:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2020-10-14 05:35:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 658. [2020-10-14 05:35:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-14 05:35:22,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 746 transitions. [2020-10-14 05:35:22,406 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 746 transitions. Word has length 53 [2020-10-14 05:35:22,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:22,406 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 746 transitions. [2020-10-14 05:35:22,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 05:35:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 746 transitions. [2020-10-14 05:35:22,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 05:35:22,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:22,409 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:22,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-14 05:35:22,410 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:22,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:22,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1380486271, now seen corresponding path program 67 times [2020-10-14 05:35:22,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:22,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611280133] [2020-10-14 05:35:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:22,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:22,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:22,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 05:35:22,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:22,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-14 05:35:22,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:22,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:22,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 05:35:22,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:35:22,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 05:35:22,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:22,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:22,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:22,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:22,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:22,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:22,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:22,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:22,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:22,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:22,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:22,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:22,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 05:35:22,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:22,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:35:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:35:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:23,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 05:35:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:23,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:23,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:23,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:23,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:23,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 05:35:23,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:23,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:23,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:35:23,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:23,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:35:23,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:35:23,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611280133] [2020-10-14 05:35:23,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:23,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 05:35:23,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127300961] [2020-10-14 05:35:23,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 05:35:23,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:23,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 05:35:23,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:35:23,442 INFO L87 Difference]: Start difference. First operand 658 states and 746 transitions. Second operand 25 states. [2020-10-14 05:35:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:24,648 INFO L93 Difference]: Finished difference Result 673 states and 761 transitions. [2020-10-14 05:35:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:35:24,649 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 53 [2020-10-14 05:35:24,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:24,653 INFO L225 Difference]: With dead ends: 673 [2020-10-14 05:35:24,653 INFO L226 Difference]: Without dead ends: 661 [2020-10-14 05:35:24,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:35:24,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-10-14 05:35:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 659. [2020-10-14 05:35:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-10-14 05:35:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 743 transitions. [2020-10-14 05:35:24,737 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 743 transitions. Word has length 53 [2020-10-14 05:35:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:24,738 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 743 transitions. [2020-10-14 05:35:24,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 05:35:24,738 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 743 transitions. [2020-10-14 05:35:24,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 05:35:24,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:24,742 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:24,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-14 05:35:24,742 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:24,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:24,742 INFO L82 PathProgramCache]: Analyzing trace with hash -886594786, now seen corresponding path program 68 times [2020-10-14 05:35:24,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:24,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702677907] [2020-10-14 05:35:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:24,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 05:35:24,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:24,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 05:35:24,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:35:24,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:35:24,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 23 [2020-10-14 05:35:24,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:24,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:24,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:24,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:24,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:24,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:24,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:24,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:24,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 05:35:24,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:35:24,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:24,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:35:24,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:25,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 05:35:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:25,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:25,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:25,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:25,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:25,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:35:25,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:25,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 05:35:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:25,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 05:35:25,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702677907] [2020-10-14 05:35:25,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:25,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 05:35:25,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010411870] [2020-10-14 05:35:25,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:35:25,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:25,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:35:25,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:35:25,079 INFO L87 Difference]: Start difference. First operand 659 states and 743 transitions. Second operand 14 states. [2020-10-14 05:35:25,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:25,492 INFO L93 Difference]: Finished difference Result 1133 states and 1273 transitions. [2020-10-14 05:35:25,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:35:25,493 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-14 05:35:25,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:25,500 INFO L225 Difference]: With dead ends: 1133 [2020-10-14 05:35:25,500 INFO L226 Difference]: Without dead ends: 771 [2020-10-14 05:35:25,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=385, Invalid=737, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:35:25,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-10-14 05:35:25,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 741. [2020-10-14 05:35:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2020-10-14 05:35:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 836 transitions. [2020-10-14 05:35:25,594 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 836 transitions. Word has length 53 [2020-10-14 05:35:25,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:25,594 INFO L479 AbstractCegarLoop]: Abstraction has 741 states and 836 transitions. [2020-10-14 05:35:25,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:35:25,594 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 836 transitions. [2020-10-14 05:35:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 05:35:25,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:25,597 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:25,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-14 05:35:25,597 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:25,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:25,597 INFO L82 PathProgramCache]: Analyzing trace with hash -650142791, now seen corresponding path program 69 times [2020-10-14 05:35:25,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:25,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570975007] [2020-10-14 05:35:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:25,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:25,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:25,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 05:35:25,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:25,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 05:35:25,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:25,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:25,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:35:25,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 05:35:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:35:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:25,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:25,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:25,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:25,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:25,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:25,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:25,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:25,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:25,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:25,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:25,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:25,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:25,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:25,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:25,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:25,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:25,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:25,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:35:25,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:25,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:25,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:25,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:25,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:25,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:25,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 05:35:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:25,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:25,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:25,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:25,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 05:35:25,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:25,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:35:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:35:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:25,960 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 05:35:25,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570975007] [2020-10-14 05:35:25,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:25,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 05:35:25,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74327013] [2020-10-14 05:35:25,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:35:25,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:25,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:35:25,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:35:25,962 INFO L87 Difference]: Start difference. First operand 741 states and 836 transitions. Second operand 14 states. [2020-10-14 05:35:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:26,385 INFO L93 Difference]: Finished difference Result 899 states and 1025 transitions. [2020-10-14 05:35:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:35:26,386 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-14 05:35:26,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:26,389 INFO L225 Difference]: With dead ends: 899 [2020-10-14 05:35:26,389 INFO L226 Difference]: Without dead ends: 853 [2020-10-14 05:35:26,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=385, Invalid=737, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:35:26,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-10-14 05:35:26,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 823. [2020-10-14 05:35:26,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-10-14 05:35:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 929 transitions. [2020-10-14 05:35:26,485 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 929 transitions. Word has length 53 [2020-10-14 05:35:26,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:26,485 INFO L479 AbstractCegarLoop]: Abstraction has 823 states and 929 transitions. [2020-10-14 05:35:26,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:35:26,486 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 929 transitions. [2020-10-14 05:35:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:35:26,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:26,518 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:26,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-14 05:35:26,518 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:26,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:26,519 INFO L82 PathProgramCache]: Analyzing trace with hash -189870414, now seen corresponding path program 70 times [2020-10-14 05:35:26,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:26,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864958765] [2020-10-14 05:35:26,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:26,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:26,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:35:26,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-14 05:35:26,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:26,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 05:35:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 05:35:26,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:26,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:26,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:26,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:26,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:26,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:26,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:26,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:26,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:26,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:26,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:26,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:26,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:26,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:26,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:27,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:27,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:27,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:27,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 05:35:27,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:27,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:27,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:35:27,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:27,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:35:27,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:27,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 05:35:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:27,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:27,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:27,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:27,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:27,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 05:35:27,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:27,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:35:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:35:27,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:28,027 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:35:28,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864958765] [2020-10-14 05:35:28,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:28,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 05:35:28,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785826072] [2020-10-14 05:35:28,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 05:35:28,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:28,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 05:35:28,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:35:28,028 INFO L87 Difference]: Start difference. First operand 823 states and 929 transitions. Second operand 36 states. [2020-10-14 05:35:29,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:29,627 INFO L93 Difference]: Finished difference Result 939 states and 1060 transitions. [2020-10-14 05:35:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 05:35:29,628 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 54 [2020-10-14 05:35:29,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:29,633 INFO L225 Difference]: With dead ends: 939 [2020-10-14 05:35:29,633 INFO L226 Difference]: Without dead ends: 933 [2020-10-14 05:35:29,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=113, Invalid=1957, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 05:35:29,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2020-10-14 05:35:29,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 839. [2020-10-14 05:35:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2020-10-14 05:35:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 948 transitions. [2020-10-14 05:35:29,812 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 948 transitions. Word has length 54 [2020-10-14 05:35:29,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:29,812 INFO L479 AbstractCegarLoop]: Abstraction has 839 states and 948 transitions. [2020-10-14 05:35:29,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 05:35:29,813 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 948 transitions. [2020-10-14 05:35:29,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:35:29,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:29,818 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:29,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-14 05:35:29,819 INFO L427 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:29,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:29,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1638366318, now seen corresponding path program 71 times [2020-10-14 05:35:29,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:29,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729145221] [2020-10-14 05:35:29,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:30,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:30,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:35:30,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:30,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 05:35:30,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:30,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 05:35:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 05:35:30,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:30,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:30,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:30,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:30,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:30,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:30,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:30,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:30,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:30,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:30,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:30,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:30,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:30,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:30,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 05:35:30,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:30,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:35:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:35:30,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:30,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 05:35:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:30,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:30,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:30,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:30,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:30,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 05:35:30,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:30,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:35:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:35:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:35:31,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729145221] [2020-10-14 05:35:31,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:31,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 05:35:31,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229545717] [2020-10-14 05:35:31,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 05:35:31,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:31,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 05:35:31,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:35:31,272 INFO L87 Difference]: Start difference. First operand 839 states and 948 transitions. Second operand 34 states. [2020-10-14 05:35:32,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:32,766 INFO L93 Difference]: Finished difference Result 845 states and 953 transitions. [2020-10-14 05:35:32,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 05:35:32,767 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 54 [2020-10-14 05:35:32,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:32,771 INFO L225 Difference]: With dead ends: 845 [2020-10-14 05:35:32,771 INFO L226 Difference]: Without dead ends: 823 [2020-10-14 05:35:32,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=117, Invalid=1953, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 05:35:32,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-10-14 05:35:32,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 823. [2020-10-14 05:35:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-10-14 05:35:32,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 930 transitions. [2020-10-14 05:35:32,874 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 930 transitions. Word has length 54 [2020-10-14 05:35:32,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:32,875 INFO L479 AbstractCegarLoop]: Abstraction has 823 states and 930 transitions. [2020-10-14 05:35:32,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 05:35:32,875 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 930 transitions. [2020-10-14 05:35:32,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:35:32,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:32,878 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:32,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-14 05:35:32,879 INFO L427 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:32,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:32,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1469117646, now seen corresponding path program 72 times [2020-10-14 05:35:32,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:32,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601579804] [2020-10-14 05:35:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:33,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:33,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:35:33,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:33,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-14 05:35:33,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:33,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:33,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 05:35:33,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:33,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 05:35:33,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:33,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:33,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:33,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:33,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:33,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:33,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:33,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:33,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:33,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:33,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:33,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:33,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:33,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:33,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:33,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:33,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:33,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 05:35:33,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:33,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:33,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:35:33,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:33,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:35:33,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:33,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 05:35:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:33,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:33,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:33,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:33,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:33,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 05:35:33,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:33,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:35:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:35:33,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:34,262 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 05:35:34,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601579804] [2020-10-14 05:35:34,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:34,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:35:34,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383450326] [2020-10-14 05:35:34,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:35:34,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:34,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:35:34,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:35:34,264 INFO L87 Difference]: Start difference. First operand 823 states and 930 transitions. Second operand 32 states. [2020-10-14 05:35:35,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:35,612 INFO L93 Difference]: Finished difference Result 829 states and 935 transitions. [2020-10-14 05:35:35,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 05:35:35,613 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 54 [2020-10-14 05:35:35,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:35,617 INFO L225 Difference]: With dead ends: 829 [2020-10-14 05:35:35,617 INFO L226 Difference]: Without dead ends: 805 [2020-10-14 05:35:35,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=121, Invalid=1949, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 05:35:35,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-10-14 05:35:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2020-10-14 05:35:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2020-10-14 05:35:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 910 transitions. [2020-10-14 05:35:35,759 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 910 transitions. Word has length 54 [2020-10-14 05:35:35,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:35,759 INFO L479 AbstractCegarLoop]: Abstraction has 805 states and 910 transitions. [2020-10-14 05:35:35,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:35:35,759 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 910 transitions. [2020-10-14 05:35:35,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:35:35,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:35,763 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:35,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2020-10-14 05:35:35,763 INFO L427 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:35,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1834367214, now seen corresponding path program 73 times [2020-10-14 05:35:35,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:35,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406956474] [2020-10-14 05:35:35,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:35,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:36,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:36,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:35:36,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:36,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-14 05:35:36,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:36,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:35:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 05:35:36,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:36,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:36,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:36,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:36,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:36,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:36,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:36,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:36,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:36,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:36,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:36,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:36,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:36,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:36,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:36,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 05:35:36,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:36,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:35:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:35:36,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:36,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 05:35:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:36,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:36,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:36,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:36,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 05:35:36,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:36,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:35:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:35:36,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 05:35:37,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406956474] [2020-10-14 05:35:37,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:37,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 05:35:37,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540950707] [2020-10-14 05:35:37,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 05:35:37,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:37,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 05:35:37,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:35:37,053 INFO L87 Difference]: Start difference. First operand 805 states and 910 transitions. Second operand 30 states. [2020-10-14 05:35:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:38,285 INFO L93 Difference]: Finished difference Result 811 states and 915 transitions. [2020-10-14 05:35:38,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 05:35:38,286 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 54 [2020-10-14 05:35:38,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:38,289 INFO L225 Difference]: With dead ends: 811 [2020-10-14 05:35:38,289 INFO L226 Difference]: Without dead ends: 785 [2020-10-14 05:35:38,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=125, Invalid=1945, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 05:35:38,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-10-14 05:35:38,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 785. [2020-10-14 05:35:38,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-10-14 05:35:38,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 888 transitions. [2020-10-14 05:35:38,382 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 888 transitions. Word has length 54 [2020-10-14 05:35:38,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:38,382 INFO L479 AbstractCegarLoop]: Abstraction has 785 states and 888 transitions. [2020-10-14 05:35:38,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 05:35:38,383 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 888 transitions. [2020-10-14 05:35:38,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:35:38,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:38,386 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:38,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-14 05:35:38,386 INFO L427 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:38,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:38,386 INFO L82 PathProgramCache]: Analyzing trace with hash -294896629, now seen corresponding path program 74 times [2020-10-14 05:35:38,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:38,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224361092] [2020-10-14 05:35:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:38,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:38,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:38,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:35:38,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:38,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 05:35:38,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:38,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:38,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:35:38,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:35:38,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 05:35:38,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:38,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:38,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:38,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:38,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:38,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:38,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:38,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:38,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:38,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:38,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:38,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:38,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:38,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:38,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:38,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:38,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:38,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:38,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 05:35:38,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:38,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:35:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:35:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:38,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 05:35:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:38,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:38,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:38,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:35:38,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:38,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 05:35:38,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:38,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:38,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:35:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:35:38,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-14 05:35:38,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224361092] [2020-10-14 05:35:38,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:38,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:35:38,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153897713] [2020-10-14 05:35:38,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:35:38,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:38,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:35:38,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:35:38,968 INFO L87 Difference]: Start difference. First operand 785 states and 888 transitions. Second operand 17 states. [2020-10-14 05:35:39,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:39,642 INFO L93 Difference]: Finished difference Result 873 states and 994 transitions. [2020-10-14 05:35:39,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:35:39,643 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-14 05:35:39,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:39,652 INFO L225 Difference]: With dead ends: 873 [2020-10-14 05:35:39,653 INFO L226 Difference]: Without dead ends: 855 [2020-10-14 05:35:39,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:35:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-10-14 05:35:39,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 850. [2020-10-14 05:35:39,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-10-14 05:35:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 961 transitions. [2020-10-14 05:35:39,799 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 961 transitions. Word has length 54 [2020-10-14 05:35:39,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:39,799 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 961 transitions. [2020-10-14 05:35:39,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:35:39,799 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 961 transitions. [2020-10-14 05:35:39,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:35:39,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:39,803 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:39,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-14 05:35:39,804 INFO L427 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:39,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:39,804 INFO L82 PathProgramCache]: Analyzing trace with hash -314685518, now seen corresponding path program 75 times [2020-10-14 05:35:39,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:39,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011840958] [2020-10-14 05:35:39,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:39,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:40,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:40,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:35:40,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:40,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-14 05:35:40,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:40,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:40,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 05:35:40,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:40,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 05:35:40,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:40,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:40,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:40,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:40,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:40,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:40,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:40,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:40,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:40,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:40,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:40,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:40,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:40,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:40,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:40,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 05:35:40,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:40,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:35:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:35:40,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:40,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 05:35:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:40,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:40,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:40,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:40,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:40,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 05:35:40,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:40,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:40,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:35:40,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:40,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:35:40,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:40,967 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 05:35:40,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011840958] [2020-10-14 05:35:40,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:40,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 05:35:40,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77719813] [2020-10-14 05:35:40,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 05:35:40,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:40,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 05:35:40,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:35:40,969 INFO L87 Difference]: Start difference. First operand 850 states and 961 transitions. Second operand 28 states. [2020-10-14 05:35:42,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:42,096 INFO L93 Difference]: Finished difference Result 868 states and 983 transitions. [2020-10-14 05:35:42,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:35:42,097 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2020-10-14 05:35:42,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:42,103 INFO L225 Difference]: With dead ends: 868 [2020-10-14 05:35:42,103 INFO L226 Difference]: Without dead ends: 850 [2020-10-14 05:35:42,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=129, Invalid=1941, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 05:35:42,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-10-14 05:35:42,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 845. [2020-10-14 05:35:42,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2020-10-14 05:35:42,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 957 transitions. [2020-10-14 05:35:42,203 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 957 transitions. Word has length 54 [2020-10-14 05:35:42,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:42,203 INFO L479 AbstractCegarLoop]: Abstraction has 845 states and 957 transitions. [2020-10-14 05:35:42,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 05:35:42,203 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 957 transitions. [2020-10-14 05:35:42,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:35:42,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:42,208 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:42,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2020-10-14 05:35:42,208 INFO L427 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:42,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:42,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1555012935, now seen corresponding path program 76 times [2020-10-14 05:35:42,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:42,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280426846] [2020-10-14 05:35:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:42,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:42,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:42,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:35:42,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:42,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 05:35:42,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:42,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:35:42,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:35:42,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 05:35:42,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:42,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:42,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:42,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:42,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:42,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:42,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:42,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:42,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:42,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:42,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:42,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:42,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:42,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:42,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:42,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:42,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:35:42,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 05:35:42,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:42,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:35:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:35:42,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:42,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:35:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:42,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:42,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:42,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:35:42,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 05:35:42,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:42,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:35:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:42,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:35:42,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:42,937 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-14 05:35:42,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280426846] [2020-10-14 05:35:42,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:42,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:35:42,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075930337] [2020-10-14 05:35:42,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:35:42,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:42,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:35:42,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:35:42,940 INFO L87 Difference]: Start difference. First operand 845 states and 957 transitions. Second operand 17 states. [2020-10-14 05:35:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:44,002 INFO L93 Difference]: Finished difference Result 859 states and 970 transitions. [2020-10-14 05:35:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:35:44,003 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-14 05:35:44,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:44,022 INFO L225 Difference]: With dead ends: 859 [2020-10-14 05:35:44,022 INFO L226 Difference]: Without dead ends: 833 [2020-10-14 05:35:44,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:35:44,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2020-10-14 05:35:44,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 831. [2020-10-14 05:35:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-10-14 05:35:44,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 933 transitions. [2020-10-14 05:35:44,179 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 933 transitions. Word has length 54 [2020-10-14 05:35:44,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:44,180 INFO L479 AbstractCegarLoop]: Abstraction has 831 states and 933 transitions. [2020-10-14 05:35:44,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:35:44,180 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 933 transitions. [2020-10-14 05:35:44,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:35:44,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:44,186 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:44,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-14 05:35:44,187 INFO L427 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:44,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:44,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1626287393, now seen corresponding path program 77 times [2020-10-14 05:35:44,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:44,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197647070] [2020-10-14 05:35:44,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:44,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:44,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:44,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 05:35:44,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:44,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-14 05:35:44,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:44,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:44,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 05:35:44,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:35:44,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 05:35:44,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:44,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:44,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:44,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:44,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:44,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:44,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:44,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:44,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:44,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:44,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:44,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:44,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:44,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 05:35:44,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:44,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:44,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:35:44,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:44,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:35:44,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:44,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 05:35:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:44,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:44,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:44,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:35:44,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:44,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 05:35:44,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:44,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:35:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:35:44,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:35:45,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197647070] [2020-10-14 05:35:45,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:45,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 05:35:45,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792828014] [2020-10-14 05:35:45,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 05:35:45,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:45,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 05:35:45,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:35:45,365 INFO L87 Difference]: Start difference. First operand 831 states and 933 transitions. Second operand 27 states. [2020-10-14 05:35:46,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:46,892 INFO L93 Difference]: Finished difference Result 947 states and 1070 transitions. [2020-10-14 05:35:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 05:35:46,893 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 55 [2020-10-14 05:35:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:46,901 INFO L225 Difference]: With dead ends: 947 [2020-10-14 05:35:46,901 INFO L226 Difference]: Without dead ends: 933 [2020-10-14 05:35:46,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=753, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:35:46,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2020-10-14 05:35:47,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 924. [2020-10-14 05:35:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-10-14 05:35:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1040 transitions. [2020-10-14 05:35:47,022 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1040 transitions. Word has length 55 [2020-10-14 05:35:47,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:47,023 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1040 transitions. [2020-10-14 05:35:47,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 05:35:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1040 transitions. [2020-10-14 05:35:47,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:35:47,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:47,030 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:47,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-14 05:35:47,031 INFO L427 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:47,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:47,031 INFO L82 PathProgramCache]: Analyzing trace with hash -77537544, now seen corresponding path program 78 times [2020-10-14 05:35:47,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:47,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605809453] [2020-10-14 05:35:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:47,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:47,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:47,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 05:35:47,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:47,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-14 05:35:47,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:47,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 05:35:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:35:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 05:35:47,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:47,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:47,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:47,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:47,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:47,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:47,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:47,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:47,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:47,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:47,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:47,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:47,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:47,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:35:47,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:47,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 05:35:47,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:47,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:35:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:35:47,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:47,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:35:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:47,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:47,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:47,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:47,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:47,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 05:35:47,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:47,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:47,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:35:47,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:47,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:35:47,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:48,209 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:35:48,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605809453] [2020-10-14 05:35:48,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:48,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 05:35:48,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821851752] [2020-10-14 05:35:48,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 05:35:48,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:48,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 05:35:48,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:35:48,210 INFO L87 Difference]: Start difference. First operand 924 states and 1040 transitions. Second operand 27 states. [2020-10-14 05:35:49,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:49,675 INFO L93 Difference]: Finished difference Result 939 states and 1055 transitions. [2020-10-14 05:35:49,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 05:35:49,676 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 55 [2020-10-14 05:35:49,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:49,680 INFO L225 Difference]: With dead ends: 939 [2020-10-14 05:35:49,680 INFO L226 Difference]: Without dead ends: 927 [2020-10-14 05:35:49,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:35:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-10-14 05:35:49,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 925. [2020-10-14 05:35:49,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-10-14 05:35:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1036 transitions. [2020-10-14 05:35:49,865 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1036 transitions. Word has length 55 [2020-10-14 05:35:49,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:49,865 INFO L479 AbstractCegarLoop]: Abstraction has 925 states and 1036 transitions. [2020-10-14 05:35:49,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 05:35:49,866 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1036 transitions. [2020-10-14 05:35:49,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:35:49,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:49,875 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:49,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-14 05:35:49,877 INFO L427 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:49,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:49,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1820981415, now seen corresponding path program 79 times [2020-10-14 05:35:49,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:49,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385367654] [2020-10-14 05:35:49,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:49,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:50,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 05:35:50,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:50,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-14 05:35:50,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:50,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:35:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 05:35:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:35:50,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:50,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:50,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:50,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:50,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:50,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:50,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:50,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:50,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:50,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:50,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:50,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:50,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:35:50,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:50,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:35:50,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:50,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:50,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:50,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:50,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:50,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:50,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:35:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:50,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:50,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:50,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:35:50,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:50,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:50,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:35:50,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:50,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:35:50,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-14 05:35:50,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385367654] [2020-10-14 05:35:50,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:50,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 05:35:50,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831059890] [2020-10-14 05:35:50,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:35:50,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:50,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:35:50,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:35:50,316 INFO L87 Difference]: Start difference. First operand 925 states and 1036 transitions. Second operand 15 states. [2020-10-14 05:35:50,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:50,834 INFO L93 Difference]: Finished difference Result 967 states and 1086 transitions. [2020-10-14 05:35:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 05:35:50,834 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-14 05:35:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:50,838 INFO L225 Difference]: With dead ends: 967 [2020-10-14 05:35:50,838 INFO L226 Difference]: Without dead ends: 928 [2020-10-14 05:35:50,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=448, Invalid=812, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:35:50,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2020-10-14 05:35:50,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 916. [2020-10-14 05:35:50,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2020-10-14 05:35:50,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1021 transitions. [2020-10-14 05:35:50,964 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1021 transitions. Word has length 55 [2020-10-14 05:35:50,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:50,965 INFO L479 AbstractCegarLoop]: Abstraction has 916 states and 1021 transitions. [2020-10-14 05:35:50,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:35:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1021 transitions. [2020-10-14 05:35:50,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:35:50,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:50,970 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:50,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2020-10-14 05:35:50,970 INFO L427 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:50,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:50,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1914468606, now seen corresponding path program 80 times [2020-10-14 05:35:50,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:50,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804675425] [2020-10-14 05:35:50,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:50,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:51,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 05:35:51,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:51,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 05:35:51,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:51,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:35:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:35:51,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:51,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:51,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:51,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:51,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:51,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:51,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:51,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:51,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:51,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:51,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:51,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:51,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:51,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:35:51,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:51,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 05:35:51,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:51,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:35:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:35:51,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:51,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 05:35:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:51,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:51,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:35:51,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:51,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:35:51,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:51,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 05:35:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:51,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-14 05:35:51,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804675425] [2020-10-14 05:35:51,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:51,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 05:35:51,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038339946] [2020-10-14 05:35:51,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:35:51,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:51,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:35:51,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:35:51,382 INFO L87 Difference]: Start difference. First operand 916 states and 1021 transitions. Second operand 15 states. [2020-10-14 05:35:51,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:51,869 INFO L93 Difference]: Finished difference Result 1409 states and 1552 transitions. [2020-10-14 05:35:51,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 05:35:51,869 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-14 05:35:51,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:51,876 INFO L225 Difference]: With dead ends: 1409 [2020-10-14 05:35:51,877 INFO L226 Difference]: Without dead ends: 927 [2020-10-14 05:35:51,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=448, Invalid=812, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:35:51,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-10-14 05:35:52,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2020-10-14 05:35:52,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-10-14 05:35:52,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1032 transitions. [2020-10-14 05:35:52,024 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1032 transitions. Word has length 55 [2020-10-14 05:35:52,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:52,024 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1032 transitions. [2020-10-14 05:35:52,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:35:52,024 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1032 transitions. [2020-10-14 05:35:52,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 05:35:52,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:52,028 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:52,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2020-10-14 05:35:52,029 INFO L427 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:52,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:52,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1856031577, now seen corresponding path program 81 times [2020-10-14 05:35:52,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:52,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498348579] [2020-10-14 05:35:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:52,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:52,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:52,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:35:52,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:52,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-14 05:35:52,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:52,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 05:35:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 05:35:52,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:52,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:52,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:52,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:52,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:52,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:52,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:52,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:52,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:52,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:52,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:52,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:52,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:52,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:35:52,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:52,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 05:35:52,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:52,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:35:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:35:52,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:53,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:35:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:53,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:53,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:53,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:35:53,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:53,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 05:35:53,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:53,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:35:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:35:53,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:35:53,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498348579] [2020-10-14 05:35:53,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:53,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 05:35:53,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169049505] [2020-10-14 05:35:53,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 05:35:53,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:53,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 05:35:53,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 05:35:53,843 INFO L87 Difference]: Start difference. First operand 927 states and 1032 transitions. Second operand 38 states. [2020-10-14 05:35:55,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:55,679 INFO L93 Difference]: Finished difference Result 1051 states and 1171 transitions. [2020-10-14 05:35:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 05:35:55,680 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 56 [2020-10-14 05:35:55,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:55,686 INFO L225 Difference]: With dead ends: 1051 [2020-10-14 05:35:55,686 INFO L226 Difference]: Without dead ends: 1045 [2020-10-14 05:35:55,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=117, Invalid=2139, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 05:35:55,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-14 05:35:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 943. [2020-10-14 05:35:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-14 05:35:55,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1051 transitions. [2020-10-14 05:35:55,803 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1051 transitions. Word has length 56 [2020-10-14 05:35:55,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:55,803 INFO L479 AbstractCegarLoop]: Abstraction has 943 states and 1051 transitions. [2020-10-14 05:35:55,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 05:35:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1051 transitions. [2020-10-14 05:35:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 05:35:55,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:55,808 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:55,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-10-14 05:35:55,808 INFO L427 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:55,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:55,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1440959257, now seen corresponding path program 82 times [2020-10-14 05:35:55,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:55,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900987849] [2020-10-14 05:35:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:55,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:56,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:56,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:35:56,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:56,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-14 05:35:56,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:56,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:56,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 05:35:56,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 05:35:56,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:56,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:56,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:56,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:56,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:56,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:56,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:56,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:56,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:56,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:56,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:56,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:56,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:56,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:35:56,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:56,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 05:35:56,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:56,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:56,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:35:56,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:56,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:35:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:56,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:35:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:56,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:56,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:35:56,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:56,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 05:35:56,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:56,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:35:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:35:56,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:57,625 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:35:57,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900987849] [2020-10-14 05:35:57,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:57,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 05:35:57,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107498072] [2020-10-14 05:35:57,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 05:35:57,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:57,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 05:35:57,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:35:57,627 INFO L87 Difference]: Start difference. First operand 943 states and 1051 transitions. Second operand 36 states. [2020-10-14 05:35:59,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:59,327 INFO L93 Difference]: Finished difference Result 949 states and 1056 transitions. [2020-10-14 05:35:59,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 05:35:59,328 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 56 [2020-10-14 05:35:59,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:59,331 INFO L225 Difference]: With dead ends: 949 [2020-10-14 05:35:59,331 INFO L226 Difference]: Without dead ends: 927 [2020-10-14 05:35:59,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=121, Invalid=2135, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 05:35:59,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-10-14 05:35:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2020-10-14 05:35:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-10-14 05:35:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1033 transitions. [2020-10-14 05:35:59,454 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1033 transitions. Word has length 56 [2020-10-14 05:35:59,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:59,454 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1033 transitions. [2020-10-14 05:35:59,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 05:35:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1033 transitions. [2020-10-14 05:35:59,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 05:35:59,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:59,459 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:59,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-10-14 05:35:59,459 INFO L427 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:59,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:59,460 INFO L82 PathProgramCache]: Analyzing trace with hash -157217959, now seen corresponding path program 83 times [2020-10-14 05:35:59,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:59,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438027566] [2020-10-14 05:35:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:59,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:59,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:59,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:35:59,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-14 05:35:59,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:59,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 05:35:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:35:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 05:35:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:59,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:59,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:59,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:59,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:59,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:59,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:59,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:59,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:59,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:59,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:59,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:59,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:59,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:00,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:00,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:36:00,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:00,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 05:36:00,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:00,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:00,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:36:00,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:00,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:36:00,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:00,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:36:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:00,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:00,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:00,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:36:00,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:00,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 05:36:00,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:00,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:36:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:36:00,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:01,058 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 05:36:01,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438027566] [2020-10-14 05:36:01,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:01,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 05:36:01,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045478659] [2020-10-14 05:36:01,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 05:36:01,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:01,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 05:36:01,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:36:01,059 INFO L87 Difference]: Start difference. First operand 927 states and 1033 transitions. Second operand 34 states. [2020-10-14 05:36:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:02,609 INFO L93 Difference]: Finished difference Result 933 states and 1038 transitions. [2020-10-14 05:36:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 05:36:02,609 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 56 [2020-10-14 05:36:02,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:02,613 INFO L225 Difference]: With dead ends: 933 [2020-10-14 05:36:02,613 INFO L226 Difference]: Without dead ends: 909 [2020-10-14 05:36:02,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=125, Invalid=2131, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 05:36:02,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2020-10-14 05:36:02,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 909. [2020-10-14 05:36:02,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 909 states. [2020-10-14 05:36:02,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1013 transitions. [2020-10-14 05:36:02,728 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1013 transitions. Word has length 56 [2020-10-14 05:36:02,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:02,729 INFO L479 AbstractCegarLoop]: Abstraction has 909 states and 1013 transitions. [2020-10-14 05:36:02,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 05:36:02,729 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1013 transitions. [2020-10-14 05:36:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 05:36:02,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:02,733 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:02,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-14 05:36:02,733 INFO L427 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:02,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:02,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1925319449, now seen corresponding path program 84 times [2020-10-14 05:36:02,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:02,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237115866] [2020-10-14 05:36:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:03,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:03,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:36:03,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:03,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-14 05:36:03,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:03,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:03,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 05:36:03,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:36:03,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 05:36:03,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:03,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:03,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:03,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:03,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:03,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:03,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:03,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:03,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:03,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:03,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:03,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:03,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:03,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:03,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:36:03,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:03,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 05:36:03,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:03,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:36:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:36:03,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:03,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:36:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:03,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:03,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:36:03,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:03,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 05:36:03,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:03,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:03,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:36:03,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:03,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:36:03,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 05:36:04,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237115866] [2020-10-14 05:36:04,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:04,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:36:04,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631872437] [2020-10-14 05:36:04,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:36:04,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:04,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:36:04,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:36:04,241 INFO L87 Difference]: Start difference. First operand 909 states and 1013 transitions. Second operand 32 states. [2020-10-14 05:36:05,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:05,669 INFO L93 Difference]: Finished difference Result 915 states and 1018 transitions. [2020-10-14 05:36:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 05:36:05,670 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 56 [2020-10-14 05:36:05,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:05,674 INFO L225 Difference]: With dead ends: 915 [2020-10-14 05:36:05,674 INFO L226 Difference]: Without dead ends: 889 [2020-10-14 05:36:05,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=129, Invalid=2127, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 05:36:05,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-10-14 05:36:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 889. [2020-10-14 05:36:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-10-14 05:36:05,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 991 transitions. [2020-10-14 05:36:05,849 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 991 transitions. Word has length 56 [2020-10-14 05:36:05,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:05,850 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 991 transitions. [2020-10-14 05:36:05,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:36:05,850 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 991 transitions. [2020-10-14 05:36:05,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 05:36:05,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:05,857 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:05,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-14 05:36:05,858 INFO L427 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:05,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:05,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1508068185, now seen corresponding path program 85 times [2020-10-14 05:36:05,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:05,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840467228] [2020-10-14 05:36:05,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:05,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:06,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:06,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:36:06,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:06,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-14 05:36:06,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:06,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:36:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:36:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 05:36:06,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:06,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:06,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:06,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:06,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:06,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:06,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:06,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:06,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:06,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:06,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:06,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:06,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:06,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:06,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:36:06,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:06,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 05:36:06,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:06,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:06,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:36:06,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:06,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:36:06,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:06,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:36:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:06,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:06,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:06,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:36:06,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:06,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 05:36:06,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:06,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:06,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:36:06,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:06,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:36:06,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 05:36:07,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840467228] [2020-10-14 05:36:07,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:07,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 05:36:07,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620778873] [2020-10-14 05:36:07,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 05:36:07,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:07,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 05:36:07,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:36:07,326 INFO L87 Difference]: Start difference. First operand 889 states and 991 transitions. Second operand 30 states. [2020-10-14 05:36:08,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:08,629 INFO L93 Difference]: Finished difference Result 895 states and 996 transitions. [2020-10-14 05:36:08,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 05:36:08,630 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 56 [2020-10-14 05:36:08,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:08,636 INFO L225 Difference]: With dead ends: 895 [2020-10-14 05:36:08,636 INFO L226 Difference]: Without dead ends: 867 [2020-10-14 05:36:08,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=133, Invalid=2123, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 05:36:08,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2020-10-14 05:36:08,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 867. [2020-10-14 05:36:08,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-14 05:36:08,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 967 transitions. [2020-10-14 05:36:08,806 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 967 transitions. Word has length 56 [2020-10-14 05:36:08,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:08,806 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 967 transitions. [2020-10-14 05:36:08,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 05:36:08,806 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 967 transitions. [2020-10-14 05:36:08,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 05:36:08,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:08,813 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:08,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-14 05:36:08,813 INFO L427 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:08,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:08,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1717488409, now seen corresponding path program 86 times [2020-10-14 05:36:08,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:08,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66261500] [2020-10-14 05:36:08,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:08,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:09,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:36:09,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-14 05:36:09,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:09,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 05:36:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:36:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 05:36:09,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:09,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:09,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:09,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:09,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:09,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:09,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:09,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:09,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:09,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:09,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:09,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:09,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:09,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:09,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:36:09,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:09,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 05:36:09,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:09,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:36:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:36:09,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:09,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:36:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:09,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:09,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:36:09,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:09,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 05:36:09,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:09,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:09,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:36:09,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:09,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:36:09,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-14 05:36:10,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66261500] [2020-10-14 05:36:10,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:10,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 05:36:10,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944192035] [2020-10-14 05:36:10,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 05:36:10,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:10,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 05:36:10,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:36:10,058 INFO L87 Difference]: Start difference. First operand 867 states and 967 transitions. Second operand 28 states. [2020-10-14 05:36:11,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:11,235 INFO L93 Difference]: Finished difference Result 885 states and 988 transitions. [2020-10-14 05:36:11,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:36:11,236 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2020-10-14 05:36:11,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:11,240 INFO L225 Difference]: With dead ends: 885 [2020-10-14 05:36:11,240 INFO L226 Difference]: Without dead ends: 879 [2020-10-14 05:36:11,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 05:36:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-10-14 05:36:11,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2020-10-14 05:36:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-10-14 05:36:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 980 transitions. [2020-10-14 05:36:11,351 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 980 transitions. Word has length 56 [2020-10-14 05:36:11,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:11,351 INFO L479 AbstractCegarLoop]: Abstraction has 877 states and 980 transitions. [2020-10-14 05:36:11,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 05:36:11,351 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 980 transitions. [2020-10-14 05:36:11,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 05:36:11,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:11,356 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:11,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2020-10-14 05:36:11,356 INFO L427 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:11,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:11,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1667132184, now seen corresponding path program 87 times [2020-10-14 05:36:11,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:11,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072645397] [2020-10-14 05:36:11,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:11,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:11,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:11,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 05:36:11,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:11,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 05:36:11,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:11,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:11,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 05:36:11,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:36:11,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 05:36:11,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:11,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:11,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:11,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:11,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:11,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:11,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:11,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:11,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:11,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:11,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:11,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:11,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:11,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:11,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:36:11,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:11,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 05:36:11,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:11,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:36:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:36:11,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:12,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:36:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:12,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:12,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:12,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:12,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:12,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 05:36:12,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:12,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:36:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:36:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:36:12,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:12,574 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:36:12,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072645397] [2020-10-14 05:36:12,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:12,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 05:36:12,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607073868] [2020-10-14 05:36:12,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 05:36:12,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:12,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 05:36:12,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:36:12,576 INFO L87 Difference]: Start difference. First operand 877 states and 980 transitions. Second operand 29 states. [2020-10-14 05:36:14,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:14,423 INFO L93 Difference]: Finished difference Result 995 states and 1119 transitions. [2020-10-14 05:36:14,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 05:36:14,423 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 57 [2020-10-14 05:36:14,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:14,430 INFO L225 Difference]: With dead ends: 995 [2020-10-14 05:36:14,431 INFO L226 Difference]: Without dead ends: 981 [2020-10-14 05:36:14,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=867, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:36:14,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-10-14 05:36:14,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 972. [2020-10-14 05:36:14,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-10-14 05:36:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1089 transitions. [2020-10-14 05:36:14,557 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1089 transitions. Word has length 57 [2020-10-14 05:36:14,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:14,557 INFO L479 AbstractCegarLoop]: Abstraction has 972 states and 1089 transitions. [2020-10-14 05:36:14,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 05:36:14,558 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1089 transitions. [2020-10-14 05:36:14,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 05:36:14,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:14,562 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:14,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2020-10-14 05:36:14,562 INFO L427 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:14,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:14,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1861230049, now seen corresponding path program 88 times [2020-10-14 05:36:14,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:14,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105874231] [2020-10-14 05:36:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:14,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:15,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 05:36:15,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:15,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-14 05:36:15,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:15,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:15,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 05:36:15,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:36:15,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 05:36:15,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:15,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:15,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:15,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:15,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:15,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:15,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:15,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:15,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:15,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:15,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:15,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:15,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 05:36:15,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:15,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:36:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:36:15,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:15,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:36:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:15,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:15,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:36:15,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:15,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 05:36:15,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:15,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:36:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:36:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:36:15,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:36:15,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105874231] [2020-10-14 05:36:15,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:15,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 05:36:15,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781857079] [2020-10-14 05:36:15,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 05:36:15,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:15,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 05:36:15,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:36:15,860 INFO L87 Difference]: Start difference. First operand 972 states and 1089 transitions. Second operand 29 states. [2020-10-14 05:36:17,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:17,712 INFO L93 Difference]: Finished difference Result 987 states and 1104 transitions. [2020-10-14 05:36:17,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 05:36:17,713 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 57 [2020-10-14 05:36:17,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:17,717 INFO L225 Difference]: With dead ends: 987 [2020-10-14 05:36:17,717 INFO L226 Difference]: Without dead ends: 975 [2020-10-14 05:36:17,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=867, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:36:17,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-10-14 05:36:17,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 973. [2020-10-14 05:36:17,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-10-14 05:36:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1085 transitions. [2020-10-14 05:36:17,848 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1085 transitions. Word has length 57 [2020-10-14 05:36:17,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:17,849 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1085 transitions. [2020-10-14 05:36:17,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 05:36:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1085 transitions. [2020-10-14 05:36:17,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 05:36:17,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:17,854 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:17,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2020-10-14 05:36:17,854 INFO L427 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:17,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:17,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1655961118, now seen corresponding path program 89 times [2020-10-14 05:36:17,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:17,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757346212] [2020-10-14 05:36:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:17,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:18,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:18,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 05:36:18,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:18,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-14 05:36:18,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:18,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:36:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:36:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:36:18,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:18,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:18,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:18,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:18,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:18,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:18,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:18,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:18,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:18,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:18,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:18,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:18,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:18,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:18,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:18,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 05:36:18,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:18,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:36:18,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:36:18,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:36:18,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:18,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:36:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:18,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:18,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:18,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:36:18,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:36:18,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:18,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 05:36:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:18,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-14 05:36:18,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757346212] [2020-10-14 05:36:18,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:18,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 05:36:18,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424932594] [2020-10-14 05:36:18,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 05:36:18,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:18,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 05:36:18,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:36:18,309 INFO L87 Difference]: Start difference. First operand 973 states and 1085 transitions. Second operand 16 states. [2020-10-14 05:36:18,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:18,959 INFO L93 Difference]: Finished difference Result 1639 states and 1818 transitions. [2020-10-14 05:36:18,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 05:36:18,959 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-14 05:36:18,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:18,971 INFO L225 Difference]: With dead ends: 1639 [2020-10-14 05:36:18,971 INFO L226 Difference]: Without dead ends: 1119 [2020-10-14 05:36:18,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=616, Invalid=1190, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 05:36:18,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2020-10-14 05:36:19,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1083. [2020-10-14 05:36:19,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1083 states. [2020-10-14 05:36:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1208 transitions. [2020-10-14 05:36:19,123 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1208 transitions. Word has length 57 [2020-10-14 05:36:19,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:19,123 INFO L479 AbstractCegarLoop]: Abstraction has 1083 states and 1208 transitions. [2020-10-14 05:36:19,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 05:36:19,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1208 transitions. [2020-10-14 05:36:19,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 05:36:19,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:19,130 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:19,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-14 05:36:19,130 INFO L427 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:19,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:19,131 INFO L82 PathProgramCache]: Analyzing trace with hash -259096743, now seen corresponding path program 90 times [2020-10-14 05:36:19,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:19,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809449927] [2020-10-14 05:36:19,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:19,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:19,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:19,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 05:36:19,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:19,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 05:36:19,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:19,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:19,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:36:19,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 05:36:19,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:36:19,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:19,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:19,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:19,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:19,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:19,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:19,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:19,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:19,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:19,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:19,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:19,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:19,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:19,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:19,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:19,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:19,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:36:19,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:19,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:36:19,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:19,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:19,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:19,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:19,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:19,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:19,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:36:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:19,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:19,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:19,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:19,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:19,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 05:36:19,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:19,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:19,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:36:19,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:36:19,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:36:19,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-14 05:36:19,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809449927] [2020-10-14 05:36:19,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:19,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 05:36:19,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148783186] [2020-10-14 05:36:19,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 05:36:19,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:19,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 05:36:19,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:36:19,624 INFO L87 Difference]: Start difference. First operand 1083 states and 1208 transitions. Second operand 16 states. [2020-10-14 05:36:20,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:20,383 INFO L93 Difference]: Finished difference Result 1283 states and 1445 transitions. [2020-10-14 05:36:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 05:36:20,383 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-14 05:36:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:20,390 INFO L225 Difference]: With dead ends: 1283 [2020-10-14 05:36:20,390 INFO L226 Difference]: Without dead ends: 1229 [2020-10-14 05:36:20,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=616, Invalid=1190, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 05:36:20,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-10-14 05:36:20,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1193. [2020-10-14 05:36:20,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-10-14 05:36:20,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1331 transitions. [2020-10-14 05:36:20,577 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1331 transitions. Word has length 57 [2020-10-14 05:36:20,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:20,577 INFO L479 AbstractCegarLoop]: Abstraction has 1193 states and 1331 transitions. [2020-10-14 05:36:20,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 05:36:20,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1331 transitions. [2020-10-14 05:36:20,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:36:20,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:20,587 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:20,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-14 05:36:20,587 INFO L427 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:20,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:20,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1898828526, now seen corresponding path program 91 times [2020-10-14 05:36:20,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:20,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51770906] [2020-10-14 05:36:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:20,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:21,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:21,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:36:21,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:21,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-14 05:36:21,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:21,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:21,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 05:36:21,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:36:21,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 05:36:21,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:21,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:21,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:21,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:21,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:21,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:21,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:21,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:21,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:21,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:21,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:21,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:21,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:21,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:21,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:21,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:21,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:21,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:21,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 05:36:21,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:21,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:36:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:36:21,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:21,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:36:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:21,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:21,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:21,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:21,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:21,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 05:36:21,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:21,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:21,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:36:21,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:21,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:36:21,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:36:22,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51770906] [2020-10-14 05:36:22,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:22,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 05:36:22,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699295759] [2020-10-14 05:36:22,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 05:36:22,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:22,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 05:36:22,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 05:36:22,719 INFO L87 Difference]: Start difference. First operand 1193 states and 1331 transitions. Second operand 40 states. [2020-10-14 05:36:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:24,863 INFO L93 Difference]: Finished difference Result 1335 states and 1490 transitions. [2020-10-14 05:36:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 05:36:24,863 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 58 [2020-10-14 05:36:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:24,871 INFO L225 Difference]: With dead ends: 1335 [2020-10-14 05:36:24,871 INFO L226 Difference]: Without dead ends: 1329 [2020-10-14 05:36:24,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=121, Invalid=2329, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 05:36:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-10-14 05:36:25,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1209. [2020-10-14 05:36:25,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2020-10-14 05:36:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1350 transitions. [2020-10-14 05:36:25,071 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1350 transitions. Word has length 58 [2020-10-14 05:36:25,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:25,071 INFO L479 AbstractCegarLoop]: Abstraction has 1209 states and 1350 transitions. [2020-10-14 05:36:25,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 05:36:25,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1350 transitions. [2020-10-14 05:36:25,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:36:25,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:25,077 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:25,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-14 05:36:25,078 INFO L427 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:25,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:25,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1746925966, now seen corresponding path program 92 times [2020-10-14 05:36:25,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:25,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507017534] [2020-10-14 05:36:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:25,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:25,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:25,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:36:25,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-14 05:36:25,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:25,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 05:36:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:36:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 05:36:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:25,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:25,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:25,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:25,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:25,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:25,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:25,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:25,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:25,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:25,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:25,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:25,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:25,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:25,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:25,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 05:36:25,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:25,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:36:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:36:25,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:26,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:36:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:26,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:26,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:26,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:26,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:26,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 05:36:26,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:26,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:36:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:36:26,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:36:27,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507017534] [2020-10-14 05:36:27,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:27,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 05:36:27,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394310412] [2020-10-14 05:36:27,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 05:36:27,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:27,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 05:36:27,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 05:36:27,094 INFO L87 Difference]: Start difference. First operand 1209 states and 1350 transitions. Second operand 38 states. [2020-10-14 05:36:29,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:29,076 INFO L93 Difference]: Finished difference Result 1215 states and 1355 transitions. [2020-10-14 05:36:29,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 05:36:29,077 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 58 [2020-10-14 05:36:29,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:29,082 INFO L225 Difference]: With dead ends: 1215 [2020-10-14 05:36:29,082 INFO L226 Difference]: Without dead ends: 1193 [2020-10-14 05:36:29,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=125, Invalid=2325, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 05:36:29,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2020-10-14 05:36:29,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1193. [2020-10-14 05:36:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-10-14 05:36:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1332 transitions. [2020-10-14 05:36:29,255 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1332 transitions. Word has length 58 [2020-10-14 05:36:29,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:29,256 INFO L479 AbstractCegarLoop]: Abstraction has 1193 states and 1332 transitions. [2020-10-14 05:36:29,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 05:36:29,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1332 transitions. [2020-10-14 05:36:29,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:36:29,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:29,262 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:29,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2020-10-14 05:36:29,262 INFO L427 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:29,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:29,263 INFO L82 PathProgramCache]: Analyzing trace with hash 702007698, now seen corresponding path program 93 times [2020-10-14 05:36:29,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:29,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596551199] [2020-10-14 05:36:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:29,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:29,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:29,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:36:29,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-14 05:36:29,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:29,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 05:36:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:36:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 05:36:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:29,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:29,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:29,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:29,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:29,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:29,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:29,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:29,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:29,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:29,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:29,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:29,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:29,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:30,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:30,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:30,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:30,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 05:36:30,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:30,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:30,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:36:30,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:36:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:30,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:36:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:30,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:30,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:30,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:30,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 05:36:30,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:30,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:36:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:36:30,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 05:36:31,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596551199] [2020-10-14 05:36:31,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:31,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 05:36:31,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905440428] [2020-10-14 05:36:31,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 05:36:31,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:31,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 05:36:31,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:36:31,219 INFO L87 Difference]: Start difference. First operand 1193 states and 1332 transitions. Second operand 36 states. [2020-10-14 05:36:33,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:33,058 INFO L93 Difference]: Finished difference Result 1199 states and 1337 transitions. [2020-10-14 05:36:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 05:36:33,059 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 58 [2020-10-14 05:36:33,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:33,063 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 05:36:33,063 INFO L226 Difference]: Without dead ends: 1175 [2020-10-14 05:36:33,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=129, Invalid=2321, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 05:36:33,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2020-10-14 05:36:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2020-10-14 05:36:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2020-10-14 05:36:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1312 transitions. [2020-10-14 05:36:33,255 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1312 transitions. Word has length 58 [2020-10-14 05:36:33,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:33,255 INFO L479 AbstractCegarLoop]: Abstraction has 1175 states and 1312 transitions. [2020-10-14 05:36:33,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 05:36:33,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1312 transitions. [2020-10-14 05:36:33,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:36:33,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:33,261 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:33,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2020-10-14 05:36:33,261 INFO L427 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:33,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:33,261 INFO L82 PathProgramCache]: Analyzing trace with hash -901912078, now seen corresponding path program 94 times [2020-10-14 05:36:33,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:33,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282417405] [2020-10-14 05:36:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:33,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:33,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:33,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:36:33,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:33,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-14 05:36:33,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:33,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:33,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 05:36:33,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:36:33,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 05:36:33,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:33,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:33,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:33,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:33,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:33,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:33,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:33,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:33,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:33,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:33,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:33,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:33,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:33,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 05:36:33,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:33,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:36:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:36:33,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:34,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:36:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:34,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:34,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:34,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:34,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:34,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 05:36:34,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:34,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:36:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:36:34,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 05:36:35,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282417405] [2020-10-14 05:36:35,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:35,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 05:36:35,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874276697] [2020-10-14 05:36:35,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 05:36:35,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:35,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 05:36:35,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:36:35,061 INFO L87 Difference]: Start difference. First operand 1175 states and 1312 transitions. Second operand 34 states. [2020-10-14 05:36:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:36,798 INFO L93 Difference]: Finished difference Result 1181 states and 1317 transitions. [2020-10-14 05:36:36,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 05:36:36,799 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 58 [2020-10-14 05:36:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:36,803 INFO L225 Difference]: With dead ends: 1181 [2020-10-14 05:36:36,803 INFO L226 Difference]: Without dead ends: 1155 [2020-10-14 05:36:36,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=133, Invalid=2317, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 05:36:36,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2020-10-14 05:36:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1155. [2020-10-14 05:36:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-10-14 05:36:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1290 transitions. [2020-10-14 05:36:36,973 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1290 transitions. Word has length 58 [2020-10-14 05:36:36,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:36,973 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1290 transitions. [2020-10-14 05:36:36,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 05:36:36,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1290 transitions. [2020-10-14 05:36:36,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:36:36,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:36,979 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:36,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2020-10-14 05:36:36,979 INFO L427 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:36,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:36,979 INFO L82 PathProgramCache]: Analyzing trace with hash -2000132590, now seen corresponding path program 95 times [2020-10-14 05:36:36,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:36,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964051704] [2020-10-14 05:36:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:36,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:37,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:37,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:36:37,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:37,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-14 05:36:37,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:37,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 05:36:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:36:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 05:36:37,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:37,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:37,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:37,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:37,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:37,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:37,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:37,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:37,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:37,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:37,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:37,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:37,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:37,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:37,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:37,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:37,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:37,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 05:36:37,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:37,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:36:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:36:37,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:37,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:36:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:38,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:38,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:38,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:38,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 05:36:38,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:38,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:36:38,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:38,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:36:38,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 05:36:38,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964051704] [2020-10-14 05:36:38,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:38,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:36:38,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951953157] [2020-10-14 05:36:38,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:36:38,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:38,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:36:38,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:36:38,617 INFO L87 Difference]: Start difference. First operand 1155 states and 1290 transitions. Second operand 32 states. [2020-10-14 05:36:40,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:40,187 INFO L93 Difference]: Finished difference Result 1161 states and 1295 transitions. [2020-10-14 05:36:40,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 05:36:40,187 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 58 [2020-10-14 05:36:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:40,191 INFO L225 Difference]: With dead ends: 1161 [2020-10-14 05:36:40,191 INFO L226 Difference]: Without dead ends: 1133 [2020-10-14 05:36:40,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=137, Invalid=2313, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 05:36:40,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2020-10-14 05:36:40,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2020-10-14 05:36:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1133 states. [2020-10-14 05:36:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1266 transitions. [2020-10-14 05:36:40,354 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1266 transitions. Word has length 58 [2020-10-14 05:36:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:40,354 INFO L479 AbstractCegarLoop]: Abstraction has 1133 states and 1266 transitions. [2020-10-14 05:36:40,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:36:40,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1266 transitions. [2020-10-14 05:36:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:36:40,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:40,360 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:40,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2020-10-14 05:36:40,360 INFO L427 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:40,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:40,361 INFO L82 PathProgramCache]: Analyzing trace with hash 742392839, now seen corresponding path program 96 times [2020-10-14 05:36:40,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:40,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601806811] [2020-10-14 05:36:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:40,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:40,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:40,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:36:40,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-14 05:36:40,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:40,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:36:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:36:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 05:36:40,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:40,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:40,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:40,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:40,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:40,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:40,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:40,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:40,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:40,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:40,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:40,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:40,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:40,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:40,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:40,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:40,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:36:40,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:40,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 05:36:40,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:40,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:36:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:36:40,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:40,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:36:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:40,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:40,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:40,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:36:40,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:40,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 05:36:40,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:40,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:36:40,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:36:40,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:36:40,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 05:36:41,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601806811] [2020-10-14 05:36:41,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:41,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 05:36:41,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134346323] [2020-10-14 05:36:41,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 05:36:41,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:41,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 05:36:41,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:36:41,070 INFO L87 Difference]: Start difference. First operand 1133 states and 1266 transitions. Second operand 19 states. [2020-10-14 05:36:41,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:41,997 INFO L93 Difference]: Finished difference Result 1237 states and 1392 transitions. [2020-10-14 05:36:41,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 05:36:41,998 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-10-14 05:36:41,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:42,012 INFO L225 Difference]: With dead ends: 1237 [2020-10-14 05:36:42,012 INFO L226 Difference]: Without dead ends: 1218 [2020-10-14 05:36:42,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:36:42,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2020-10-14 05:36:42,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1213. [2020-10-14 05:36:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-10-14 05:36:42,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1356 transitions. [2020-10-14 05:36:42,193 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1356 transitions. Word has length 58 [2020-10-14 05:36:42,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:42,193 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 1356 transitions. [2020-10-14 05:36:42,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 05:36:42,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1356 transitions. [2020-10-14 05:36:42,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:36:42,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:42,200 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:42,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2020-10-14 05:36:42,200 INFO L427 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:42,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:42,201 INFO L82 PathProgramCache]: Analyzing trace with hash 21810546, now seen corresponding path program 97 times [2020-10-14 05:36:42,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:42,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041107907] [2020-10-14 05:36:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:42,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:42,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:42,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:36:42,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-14 05:36:42,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:42,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:36:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:36:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 05:36:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:42,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:42,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:42,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:42,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:42,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:42,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:42,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:42,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:42,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:42,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:42,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:42,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:42,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:42,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:42,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:42,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:42,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 05:36:42,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:42,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:36:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:36:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:43,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:36:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:43,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:43,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:43,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:43,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:43,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 05:36:43,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:43,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:36:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:36:43,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-14 05:36:43,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041107907] [2020-10-14 05:36:43,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:43,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 05:36:43,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022757912] [2020-10-14 05:36:43,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 05:36:43,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:43,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 05:36:43,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:36:43,658 INFO L87 Difference]: Start difference. First operand 1213 states and 1356 transitions. Second operand 30 states. [2020-10-14 05:36:45,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:45,198 INFO L93 Difference]: Finished difference Result 1231 states and 1378 transitions. [2020-10-14 05:36:45,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 05:36:45,199 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2020-10-14 05:36:45,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:45,207 INFO L225 Difference]: With dead ends: 1231 [2020-10-14 05:36:45,207 INFO L226 Difference]: Without dead ends: 1212 [2020-10-14 05:36:45,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=141, Invalid=2309, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 05:36:45,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-10-14 05:36:45,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1207. [2020-10-14 05:36:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1207 states. [2020-10-14 05:36:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1351 transitions. [2020-10-14 05:36:45,378 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1351 transitions. Word has length 58 [2020-10-14 05:36:45,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:45,378 INFO L479 AbstractCegarLoop]: Abstraction has 1207 states and 1351 transitions. [2020-10-14 05:36:45,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 05:36:45,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1351 transitions. [2020-10-14 05:36:45,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:36:45,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:45,385 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:45,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2020-10-14 05:36:45,386 INFO L427 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:45,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:45,386 INFO L82 PathProgramCache]: Analyzing trace with hash -662124661, now seen corresponding path program 98 times [2020-10-14 05:36:45,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:45,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243888752] [2020-10-14 05:36:45,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:45,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:45,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:45,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:36:45,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:45,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 05:36:45,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:45,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:36:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:36:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 05:36:45,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:45,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:45,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:45,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:45,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:45,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:45,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:45,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:45,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:45,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:45,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:45,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:45,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:45,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:45,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:36:45,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:45,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:36:45,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:45,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:36:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 05:36:45,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:45,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:36:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:45,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:45,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:45,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:36:45,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 05:36:45,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:45,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:36:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:36:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:36:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 05:36:46,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243888752] [2020-10-14 05:36:46,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:46,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 05:36:46,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501740345] [2020-10-14 05:36:46,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 05:36:46,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:46,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 05:36:46,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:36:46,099 INFO L87 Difference]: Start difference. First operand 1207 states and 1351 transitions. Second operand 19 states. [2020-10-14 05:36:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:47,002 INFO L93 Difference]: Finished difference Result 1221 states and 1364 transitions. [2020-10-14 05:36:47,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:36:47,011 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-10-14 05:36:47,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:47,017 INFO L225 Difference]: With dead ends: 1221 [2020-10-14 05:36:47,017 INFO L226 Difference]: Without dead ends: 1193 [2020-10-14 05:36:47,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:36:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2020-10-14 05:36:47,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1191. [2020-10-14 05:36:47,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-10-14 05:36:47,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1323 transitions. [2020-10-14 05:36:47,195 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1323 transitions. Word has length 58 [2020-10-14 05:36:47,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:47,196 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1323 transitions. [2020-10-14 05:36:47,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 05:36:47,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1323 transitions. [2020-10-14 05:36:47,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 05:36:47,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:47,256 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:47,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2020-10-14 05:36:47,256 INFO L427 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:47,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:47,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1230585983, now seen corresponding path program 99 times [2020-10-14 05:36:47,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:47,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892030366] [2020-10-14 05:36:47,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:47,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:47,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:47,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 05:36:47,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:47,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-14 05:36:47,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:47,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:47,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 05:36:47,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:36:47,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 05:36:47,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:47,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:47,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:47,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:47,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:47,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:47,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:47,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:47,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:47,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:47,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:47,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:47,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:47,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:47,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:47,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 05:36:47,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:47,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:36:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:36:47,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:36:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:48,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:48,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:48,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:36:48,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:48,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 05:36:48,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:48,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:36:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:36:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:36:48,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:36:48,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892030366] [2020-10-14 05:36:48,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:48,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 05:36:48,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912547274] [2020-10-14 05:36:48,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 05:36:48,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:48,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 05:36:48,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:36:48,788 INFO L87 Difference]: Start difference. First operand 1191 states and 1323 transitions. Second operand 31 states. [2020-10-14 05:36:50,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:50,962 INFO L93 Difference]: Finished difference Result 1335 states and 1492 transitions. [2020-10-14 05:36:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 05:36:50,963 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 59 [2020-10-14 05:36:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:50,977 INFO L225 Difference]: With dead ends: 1335 [2020-10-14 05:36:50,977 INFO L226 Difference]: Without dead ends: 1321 [2020-10-14 05:36:50,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=989, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:36:50,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-10-14 05:36:51,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1312. [2020-10-14 05:36:51,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2020-10-14 05:36:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1461 transitions. [2020-10-14 05:36:51,282 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1461 transitions. Word has length 59 [2020-10-14 05:36:51,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:51,282 INFO L479 AbstractCegarLoop]: Abstraction has 1312 states and 1461 transitions. [2020-10-14 05:36:51,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 05:36:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1461 transitions. [2020-10-14 05:36:51,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 05:36:51,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:51,290 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:51,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2020-10-14 05:36:51,290 INFO L427 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:51,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:51,290 INFO L82 PathProgramCache]: Analyzing trace with hash -774460840, now seen corresponding path program 100 times [2020-10-14 05:36:51,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:51,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744389519] [2020-10-14 05:36:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:51,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:51,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:51,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 05:36:51,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:51,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-14 05:36:51,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:51,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:51,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 05:36:51,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:36:51,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 05:36:51,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:51,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:51,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:51,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:51,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:51,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:51,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:36:51,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:51,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:51,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:51,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:51,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:36:51,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:51,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 05:36:51,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:51,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:36:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 05:36:51,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:52,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:36:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:52,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:52,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:52,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:52,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:52,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 05:36:52,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:52,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:52,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:36:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:36:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:36:52,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:36:52,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744389519] [2020-10-14 05:36:52,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:52,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 05:36:52,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709904836] [2020-10-14 05:36:52,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 05:36:52,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:52,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 05:36:52,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:36:52,806 INFO L87 Difference]: Start difference. First operand 1312 states and 1461 transitions. Second operand 31 states. [2020-10-14 05:36:54,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:54,941 INFO L93 Difference]: Finished difference Result 1327 states and 1476 transitions. [2020-10-14 05:36:54,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 05:36:54,942 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 59 [2020-10-14 05:36:54,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:54,948 INFO L225 Difference]: With dead ends: 1327 [2020-10-14 05:36:54,948 INFO L226 Difference]: Without dead ends: 1315 [2020-10-14 05:36:54,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=989, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:36:54,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2020-10-14 05:36:55,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1313. [2020-10-14 05:36:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1313 states. [2020-10-14 05:36:55,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1456 transitions. [2020-10-14 05:36:55,157 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1456 transitions. Word has length 59 [2020-10-14 05:36:55,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:55,157 INFO L479 AbstractCegarLoop]: Abstraction has 1313 states and 1456 transitions. [2020-10-14 05:36:55,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 05:36:55,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1456 transitions. [2020-10-14 05:36:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 05:36:55,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:55,165 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:55,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2020-10-14 05:36:55,166 INFO L427 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:55,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:55,166 INFO L82 PathProgramCache]: Analyzing trace with hash -666334599, now seen corresponding path program 101 times [2020-10-14 05:36:55,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:55,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624202218] [2020-10-14 05:36:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:55,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:55,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:55,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 05:36:55,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:55,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 05:36:55,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:55,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:36:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 05:36:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:36:55,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:55,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:55,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:55,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:55,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:55,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:55,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:55,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:55,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:55,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:55,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:55,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:55,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:55,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:36:55,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:36:55,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:55,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:55,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:55,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:55,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:55,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:55,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:36:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:55,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:55,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:55,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:55,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:55,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 05:36:55,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:55,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:36:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:36:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:36:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-14 05:36:55,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624202218] [2020-10-14 05:36:55,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:55,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:36:55,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962953773] [2020-10-14 05:36:55,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:36:55,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:55,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:36:55,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:36:55,719 INFO L87 Difference]: Start difference. First operand 1313 states and 1456 transitions. Second operand 17 states. [2020-10-14 05:36:56,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:56,613 INFO L93 Difference]: Finished difference Result 1363 states and 1516 transitions. [2020-10-14 05:36:56,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 05:36:56,613 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 59 [2020-10-14 05:36:56,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:56,619 INFO L225 Difference]: With dead ends: 1363 [2020-10-14 05:36:56,619 INFO L226 Difference]: Without dead ends: 1318 [2020-10-14 05:36:56,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=696, Invalid=1284, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 05:36:56,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2020-10-14 05:36:56,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1306. [2020-10-14 05:36:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1306 states. [2020-10-14 05:36:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1443 transitions. [2020-10-14 05:36:56,821 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1443 transitions. Word has length 59 [2020-10-14 05:36:56,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:56,821 INFO L479 AbstractCegarLoop]: Abstraction has 1306 states and 1443 transitions. [2020-10-14 05:36:56,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:36:56,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1443 transitions. [2020-10-14 05:36:56,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 05:36:56,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:56,830 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:56,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2020-10-14 05:36:56,831 INFO L427 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:56,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:56,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1486551934, now seen corresponding path program 102 times [2020-10-14 05:36:56,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:56,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91063965] [2020-10-14 05:36:56,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:57,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:57,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 05:36:57,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:57,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 05:36:57,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:57,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:57,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:36:57,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:36:57,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:36:57,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:57,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:57,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:57,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:57,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:57,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:57,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:57,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:57,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:57,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:57,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:57,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:57,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:57,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:36:57,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:57,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 05:36:57,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:57,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:57,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:36:57,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:36:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:36:57,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:57,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:36:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:57,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:57,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:57,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:36:57,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:57,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:36:57,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:57,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:57,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:36:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:57,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-14 05:36:57,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91063965] [2020-10-14 05:36:57,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:57,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:36:57,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357145855] [2020-10-14 05:36:57,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:36:57,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:57,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:36:57,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:36:57,372 INFO L87 Difference]: Start difference. First operand 1306 states and 1443 transitions. Second operand 17 states. [2020-10-14 05:36:58,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:58,164 INFO L93 Difference]: Finished difference Result 1994 states and 2176 transitions. [2020-10-14 05:36:58,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 05:36:58,165 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 59 [2020-10-14 05:36:58,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:58,234 INFO L225 Difference]: With dead ends: 1994 [2020-10-14 05:36:58,235 INFO L226 Difference]: Without dead ends: 1319 [2020-10-14 05:36:58,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=696, Invalid=1284, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 05:36:58,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-10-14 05:36:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2020-10-14 05:36:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-10-14 05:36:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1456 transitions. [2020-10-14 05:36:58,450 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1456 transitions. Word has length 59 [2020-10-14 05:36:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:58,450 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1456 transitions. [2020-10-14 05:36:58,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:36:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1456 transitions. [2020-10-14 05:36:58,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:36:58,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:58,458 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:58,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2020-10-14 05:36:58,459 INFO L427 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:58,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:58,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1726245881, now seen corresponding path program 103 times [2020-10-14 05:36:58,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:58,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134361477] [2020-10-14 05:36:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:58,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:59,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:59,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:36:59,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:59,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-14 05:36:59,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:59,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 05:36:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:36:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 05:36:59,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:59,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:59,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:59,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:36:59,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:59,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:36:59,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:59,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:59,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:59,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:59,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:59,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:36:59,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:59,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 05:36:59,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:59,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:36:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:36:59,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:59,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:36:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:59,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:59,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:59,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:36:59,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 05:36:59,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:59,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 05:36:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:36:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:00,761 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:37:00,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134361477] [2020-10-14 05:37:00,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:00,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 05:37:00,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777034133] [2020-10-14 05:37:00,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 05:37:00,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:00,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 05:37:00,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 05:37:00,762 INFO L87 Difference]: Start difference. First operand 1319 states and 1456 transitions. Second operand 42 states. [2020-10-14 05:37:03,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:03,178 INFO L93 Difference]: Finished difference Result 1469 states and 1623 transitions. [2020-10-14 05:37:03,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 05:37:03,179 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 60 [2020-10-14 05:37:03,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:03,188 INFO L225 Difference]: With dead ends: 1469 [2020-10-14 05:37:03,188 INFO L226 Difference]: Without dead ends: 1463 [2020-10-14 05:37:03,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 05:37:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-10-14 05:37:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1335. [2020-10-14 05:37:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-14 05:37:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1475 transitions. [2020-10-14 05:37:03,398 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1475 transitions. Word has length 60 [2020-10-14 05:37:03,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:03,399 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 1475 transitions. [2020-10-14 05:37:03,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 05:37:03,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1475 transitions. [2020-10-14 05:37:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:37:03,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:03,407 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:03,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2020-10-14 05:37:03,407 INFO L427 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:03,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:03,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1280100409, now seen corresponding path program 104 times [2020-10-14 05:37:03,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:03,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605275782] [2020-10-14 05:37:03,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:03,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:03,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:03,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:37:03,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:03,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-14 05:37:03,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:03,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 05:37:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:37:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 05:37:03,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:04,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:04,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:04,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:04,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:04,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:04,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:37:04,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:04,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:04,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:04,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:37:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:04,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:04,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:04,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:04,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 05:37:04,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:04,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:37:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:37:04,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:04,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:37:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:04,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:04,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:04,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:04,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:04,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 05:37:04,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:04,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:04,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:37:04,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:37:04,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:37:05,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605275782] [2020-10-14 05:37:05,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:05,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 05:37:05,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424506137] [2020-10-14 05:37:05,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 05:37:05,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:05,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 05:37:05,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 05:37:05,656 INFO L87 Difference]: Start difference. First operand 1335 states and 1475 transitions. Second operand 40 states. [2020-10-14 05:37:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:07,934 INFO L93 Difference]: Finished difference Result 1341 states and 1480 transitions. [2020-10-14 05:37:07,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 05:37:07,935 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 60 [2020-10-14 05:37:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:07,942 INFO L225 Difference]: With dead ends: 1341 [2020-10-14 05:37:07,943 INFO L226 Difference]: Without dead ends: 1319 [2020-10-14 05:37:07,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=129, Invalid=2523, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 05:37:07,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-10-14 05:37:08,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2020-10-14 05:37:08,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-10-14 05:37:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1457 transitions. [2020-10-14 05:37:08,164 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1457 transitions. Word has length 60 [2020-10-14 05:37:08,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:08,165 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1457 transitions. [2020-10-14 05:37:08,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 05:37:08,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1457 transitions. [2020-10-14 05:37:08,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:37:08,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:08,175 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:08,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-10-14 05:37:08,175 INFO L427 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:08,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:08,175 INFO L82 PathProgramCache]: Analyzing trace with hash -245814279, now seen corresponding path program 105 times [2020-10-14 05:37:08,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:08,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788259457] [2020-10-14 05:37:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:08,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:08,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:08,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:37:08,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:08,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-14 05:37:08,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:08,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 05:37:08,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:37:08,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 05:37:08,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:08,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:08,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:08,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:08,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:08,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:08,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:37:08,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:08,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:08,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:08,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:37:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:08,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:08,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:08,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:08,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 05:37:08,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:08,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:37:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:08,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:37:08,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:09,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:37:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:09,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:09,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:09,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:09,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 05:37:09,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:09,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:37:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:37:09,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:10,229 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 05:37:10,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788259457] [2020-10-14 05:37:10,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:10,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 05:37:10,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030054204] [2020-10-14 05:37:10,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 05:37:10,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:10,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 05:37:10,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 05:37:10,231 INFO L87 Difference]: Start difference. First operand 1319 states and 1457 transitions. Second operand 38 states. [2020-10-14 05:37:12,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:12,406 INFO L93 Difference]: Finished difference Result 1325 states and 1462 transitions. [2020-10-14 05:37:12,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 05:37:12,407 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 60 [2020-10-14 05:37:12,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:12,413 INFO L225 Difference]: With dead ends: 1325 [2020-10-14 05:37:12,413 INFO L226 Difference]: Without dead ends: 1301 [2020-10-14 05:37:12,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=133, Invalid=2519, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 05:37:12,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2020-10-14 05:37:12,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1301. [2020-10-14 05:37:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1301 states. [2020-10-14 05:37:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1437 transitions. [2020-10-14 05:37:12,616 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1437 transitions. Word has length 60 [2020-10-14 05:37:12,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:12,616 INFO L479 AbstractCegarLoop]: Abstraction has 1301 states and 1437 transitions. [2020-10-14 05:37:12,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 05:37:12,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1437 transitions. [2020-10-14 05:37:12,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:37:12,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:12,624 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:12,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-10-14 05:37:12,624 INFO L427 AbstractCegarLoop]: === Iteration 113 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:12,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:12,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1570174919, now seen corresponding path program 106 times [2020-10-14 05:37:12,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:12,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110047609] [2020-10-14 05:37:12,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:12,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:13,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:13,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:37:13,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:13,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-14 05:37:13,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:13,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:13,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 05:37:13,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:37:13,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 05:37:13,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:13,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:13,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:13,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:13,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:13,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:13,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:37:13,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:13,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:13,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:13,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:13,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:37:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:13,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:13,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:13,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:13,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:13,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 05:37:13,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:13,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:37:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:37:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:13,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:37:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:13,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:13,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:13,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:13,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:13,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 05:37:13,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:13,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:13,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:37:13,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:13,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:37:13,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 05:37:14,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110047609] [2020-10-14 05:37:14,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:14,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 05:37:14,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203668864] [2020-10-14 05:37:14,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 05:37:14,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:14,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 05:37:14,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:37:14,615 INFO L87 Difference]: Start difference. First operand 1301 states and 1437 transitions. Second operand 36 states. [2020-10-14 05:37:16,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:16,708 INFO L93 Difference]: Finished difference Result 1307 states and 1442 transitions. [2020-10-14 05:37:16,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 05:37:16,709 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 60 [2020-10-14 05:37:16,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:16,715 INFO L225 Difference]: With dead ends: 1307 [2020-10-14 05:37:16,715 INFO L226 Difference]: Without dead ends: 1281 [2020-10-14 05:37:16,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=137, Invalid=2515, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 05:37:16,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-10-14 05:37:16,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2020-10-14 05:37:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2020-10-14 05:37:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1415 transitions. [2020-10-14 05:37:16,919 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1415 transitions. Word has length 60 [2020-10-14 05:37:16,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:16,919 INFO L479 AbstractCegarLoop]: Abstraction has 1281 states and 1415 transitions. [2020-10-14 05:37:16,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 05:37:16,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1415 transitions. [2020-10-14 05:37:16,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:37:16,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:16,926 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:16,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-10-14 05:37:16,926 INFO L427 AbstractCegarLoop]: === Iteration 114 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:16,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:16,926 INFO L82 PathProgramCache]: Analyzing trace with hash 699132921, now seen corresponding path program 107 times [2020-10-14 05:37:16,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:16,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071643139] [2020-10-14 05:37:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:16,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:17,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:17,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:37:17,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:17,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-14 05:37:17,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:17,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 05:37:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:37:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 05:37:17,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:17,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:17,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:17,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:17,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:17,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:17,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:37:17,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:17,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:17,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:17,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:37:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:17,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:17,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:17,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:17,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:17,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 05:37:17,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:17,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:17,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:37:17,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:17,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:37:17,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:17,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:37:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:18,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:18,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:18,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 05:37:18,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:18,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:37:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:37:18,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 05:37:18,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071643139] [2020-10-14 05:37:18,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:18,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 05:37:18,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132529053] [2020-10-14 05:37:18,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 05:37:18,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:18,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 05:37:18,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:37:18,677 INFO L87 Difference]: Start difference. First operand 1281 states and 1415 transitions. Second operand 34 states. [2020-10-14 05:37:20,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:20,551 INFO L93 Difference]: Finished difference Result 1287 states and 1420 transitions. [2020-10-14 05:37:20,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 05:37:20,552 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 60 [2020-10-14 05:37:20,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:20,557 INFO L225 Difference]: With dead ends: 1287 [2020-10-14 05:37:20,557 INFO L226 Difference]: Without dead ends: 1259 [2020-10-14 05:37:20,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=141, Invalid=2511, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 05:37:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2020-10-14 05:37:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1259. [2020-10-14 05:37:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-10-14 05:37:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1391 transitions. [2020-10-14 05:37:20,753 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1391 transitions. Word has length 60 [2020-10-14 05:37:20,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:20,753 INFO L479 AbstractCegarLoop]: Abstraction has 1259 states and 1391 transitions. [2020-10-14 05:37:20,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 05:37:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1391 transitions. [2020-10-14 05:37:20,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:37:20,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:20,761 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:20,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-10-14 05:37:20,761 INFO L427 AbstractCegarLoop]: === Iteration 115 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:20,761 INFO L82 PathProgramCache]: Analyzing trace with hash 816269369, now seen corresponding path program 108 times [2020-10-14 05:37:20,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:20,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290594967] [2020-10-14 05:37:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:20,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:21,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:21,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:37:21,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-14 05:37:21,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:21,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 05:37:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:37:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 05:37:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:21,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:21,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:21,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:21,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:21,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:21,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:37:21,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:21,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:21,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:21,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:21,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:21,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:21,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:37:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:21,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:21,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:21,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:21,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:21,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 05:37:21,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:21,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:37:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:37:21,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:21,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:37:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:21,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:21,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:21,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:21,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:21,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 05:37:21,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:21,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:37:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:37:21,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-14 05:37:22,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290594967] [2020-10-14 05:37:22,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:22,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:37:22,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727958715] [2020-10-14 05:37:22,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:37:22,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:22,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:37:22,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:37:22,481 INFO L87 Difference]: Start difference. First operand 1259 states and 1391 transitions. Second operand 32 states. [2020-10-14 05:37:24,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:24,234 INFO L93 Difference]: Finished difference Result 1265 states and 1396 transitions. [2020-10-14 05:37:24,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 05:37:24,235 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 60 [2020-10-14 05:37:24,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:24,243 INFO L225 Difference]: With dead ends: 1265 [2020-10-14 05:37:24,243 INFO L226 Difference]: Without dead ends: 1235 [2020-10-14 05:37:24,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=145, Invalid=2507, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 05:37:24,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2020-10-14 05:37:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1235. [2020-10-14 05:37:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2020-10-14 05:37:24,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1365 transitions. [2020-10-14 05:37:24,433 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1365 transitions. Word has length 60 [2020-10-14 05:37:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:24,434 INFO L479 AbstractCegarLoop]: Abstraction has 1235 states and 1365 transitions. [2020-10-14 05:37:24,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:37:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1365 transitions. [2020-10-14 05:37:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:37:24,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:24,440 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:24,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-10-14 05:37:24,441 INFO L427 AbstractCegarLoop]: === Iteration 116 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:24,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:24,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1143165959, now seen corresponding path program 109 times [2020-10-14 05:37:24,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:24,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16081292] [2020-10-14 05:37:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:24,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:24,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:24,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:37:24,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:24,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-14 05:37:24,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:24,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:37:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:37:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 05:37:24,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:24,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:24,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:24,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:24,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:24,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:37:24,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:24,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:24,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:24,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:37:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:24,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:25,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:25,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:25,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:25,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 05:37:25,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:25,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:37:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:37:25,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:25,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:37:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:25,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:25,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:25,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:25,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 05:37:25,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:25,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:37:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:37:25,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-14 05:37:25,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16081292] [2020-10-14 05:37:25,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:25,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 05:37:25,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882996825] [2020-10-14 05:37:25,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 05:37:25,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:25,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 05:37:25,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:37:25,981 INFO L87 Difference]: Start difference. First operand 1235 states and 1365 transitions. Second operand 30 states. [2020-10-14 05:37:27,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:27,503 INFO L93 Difference]: Finished difference Result 1253 states and 1386 transitions. [2020-10-14 05:37:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 05:37:27,504 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 60 [2020-10-14 05:37:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:27,511 INFO L225 Difference]: With dead ends: 1253 [2020-10-14 05:37:27,511 INFO L226 Difference]: Without dead ends: 1247 [2020-10-14 05:37:27,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=149, Invalid=2503, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 05:37:27,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2020-10-14 05:37:27,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1245. [2020-10-14 05:37:27,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1245 states. [2020-10-14 05:37:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1378 transitions. [2020-10-14 05:37:27,702 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1378 transitions. Word has length 60 [2020-10-14 05:37:27,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:27,702 INFO L479 AbstractCegarLoop]: Abstraction has 1245 states and 1378 transitions. [2020-10-14 05:37:27,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 05:37:27,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1378 transitions. [2020-10-14 05:37:27,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 05:37:27,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:27,709 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:27,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-10-14 05:37:27,709 INFO L427 AbstractCegarLoop]: === Iteration 117 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:27,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:27,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1938742904, now seen corresponding path program 110 times [2020-10-14 05:37:27,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:27,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217278493] [2020-10-14 05:37:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:27,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:28,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:28,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 05:37:28,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:28,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-14 05:37:28,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:28,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 05:37:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:37:28,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 05:37:28,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:28,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:28,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:28,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:28,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:28,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:28,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:37:28,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:28,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:28,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:37:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:28,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:28,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:28,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:28,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:28,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 05:37:28,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:28,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:37:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 05:37:28,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:28,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:37:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:28,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:28,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:37:28,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:28,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 05:37:28,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:28,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:37:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:37:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 05:37:28,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:37:29,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217278493] [2020-10-14 05:37:29,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:29,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 05:37:29,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225149077] [2020-10-14 05:37:29,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 05:37:29,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:29,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 05:37:29,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:37:29,366 INFO L87 Difference]: Start difference. First operand 1245 states and 1378 transitions. Second operand 33 states. [2020-10-14 05:37:31,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:31,957 INFO L93 Difference]: Finished difference Result 1391 states and 1549 transitions. [2020-10-14 05:37:31,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 05:37:31,958 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 61 [2020-10-14 05:37:31,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:31,973 INFO L225 Difference]: With dead ends: 1391 [2020-10-14 05:37:31,973 INFO L226 Difference]: Without dead ends: 1377 [2020-10-14 05:37:31,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=71, Invalid=1119, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 05:37:31,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2020-10-14 05:37:32,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1368. [2020-10-14 05:37:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2020-10-14 05:37:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1518 transitions. [2020-10-14 05:37:32,202 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1518 transitions. Word has length 61 [2020-10-14 05:37:32,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:32,202 INFO L479 AbstractCegarLoop]: Abstraction has 1368 states and 1518 transitions. [2020-10-14 05:37:32,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 05:37:32,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1518 transitions. [2020-10-14 05:37:32,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 05:37:32,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:32,210 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:32,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-10-14 05:37:32,210 INFO L427 AbstractCegarLoop]: === Iteration 118 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:32,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:32,210 INFO L82 PathProgramCache]: Analyzing trace with hash -88166465, now seen corresponding path program 111 times [2020-10-14 05:37:32,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:32,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566698442] [2020-10-14 05:37:32,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:32,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:32,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:32,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 05:37:32,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:32,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-14 05:37:32,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:32,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 05:37:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:37:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 05:37:32,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:32,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:32,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:32,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:32,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:32,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:32,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:37:32,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:32,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:32,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:32,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:37:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:32,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:32,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:32,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:37:32,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:32,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 05:37:32,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:32,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:37:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:37:32,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:33,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 05:37:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:33,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:33,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:33,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:33,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:33,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 05:37:33,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:33,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:37:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:37:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:37:33,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:37:34,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566698442] [2020-10-14 05:37:34,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:34,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 05:37:34,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713546913] [2020-10-14 05:37:34,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 05:37:34,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:34,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 05:37:34,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:37:34,003 INFO L87 Difference]: Start difference. First operand 1368 states and 1518 transitions. Second operand 33 states. [2020-10-14 05:37:36,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:36,686 INFO L93 Difference]: Finished difference Result 1383 states and 1533 transitions. [2020-10-14 05:37:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 05:37:36,687 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 61 [2020-10-14 05:37:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:36,695 INFO L225 Difference]: With dead ends: 1383 [2020-10-14 05:37:36,695 INFO L226 Difference]: Without dead ends: 1371 [2020-10-14 05:37:36,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=1119, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 05:37:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2020-10-14 05:37:36,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1369. [2020-10-14 05:37:36,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1369 states. [2020-10-14 05:37:36,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1513 transitions. [2020-10-14 05:37:36,923 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1513 transitions. Word has length 61 [2020-10-14 05:37:36,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:36,923 INFO L479 AbstractCegarLoop]: Abstraction has 1369 states and 1513 transitions. [2020-10-14 05:37:36,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 05:37:36,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1513 transitions. [2020-10-14 05:37:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 05:37:36,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:36,932 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:36,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2020-10-14 05:37:36,932 INFO L427 AbstractCegarLoop]: === Iteration 119 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:36,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:36,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1060042018, now seen corresponding path program 112 times [2020-10-14 05:37:36,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:36,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806092966] [2020-10-14 05:37:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:37,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:37,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 05:37:37,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:37,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-14 05:37:37,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:37,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:37,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:37:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:37:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:37:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:37,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:37,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:37,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:37,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:37,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:37:37,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:37,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:37,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:37:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:37,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:37,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:37,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:37:37,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:37,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 05:37:37,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:37,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:37,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:37:37,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:37:37,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:37:37,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:37,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 05:37:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:37,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:37,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:37,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:37,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:37,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:37:37,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:37,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:37:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:37,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-14 05:37:37,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806092966] [2020-10-14 05:37:37,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:37,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 05:37:37,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252163922] [2020-10-14 05:37:37,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:37:37,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:37,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:37:37,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:37:37,502 INFO L87 Difference]: Start difference. First operand 1369 states and 1513 transitions. Second operand 18 states. [2020-10-14 05:37:38,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:38,574 INFO L93 Difference]: Finished difference Result 2270 states and 2492 transitions. [2020-10-14 05:37:38,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 05:37:38,575 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2020-10-14 05:37:38,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:38,601 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 05:37:38,601 INFO L226 Difference]: Without dead ends: 1553 [2020-10-14 05:37:38,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=936, Invalid=1820, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 05:37:38,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2020-10-14 05:37:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1511. [2020-10-14 05:37:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1511 states. [2020-10-14 05:37:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 1670 transitions. [2020-10-14 05:37:38,875 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 1670 transitions. Word has length 61 [2020-10-14 05:37:38,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:38,875 INFO L479 AbstractCegarLoop]: Abstraction has 1511 states and 1670 transitions. [2020-10-14 05:37:38,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 05:37:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 1670 transitions. [2020-10-14 05:37:38,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 05:37:38,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:38,888 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:38,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2020-10-14 05:37:38,888 INFO L427 AbstractCegarLoop]: === Iteration 120 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:38,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:38,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1254931065, now seen corresponding path program 113 times [2020-10-14 05:37:38,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:38,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478903894] [2020-10-14 05:37:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:38,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:39,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:39,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 05:37:39,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:39,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 05:37:39,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:39,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:39,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:37:39,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 05:37:39,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:37:39,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:39,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:39,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:39,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:37:39,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:39,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:37:39,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:39,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:39,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:39,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:37:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:39,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:39,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:39,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:37:39,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:39,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:37:39,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:39,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:39,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:37:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:39,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:39,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:37:39,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:39,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 05:37:39,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:39,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:37:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:37:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:37:39,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:39,553 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-14 05:37:39,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478903894] [2020-10-14 05:37:39,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:39,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 05:37:39,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445737599] [2020-10-14 05:37:39,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:37:39,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:39,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:37:39,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:37:39,555 INFO L87 Difference]: Start difference. First operand 1511 states and 1670 transitions. Second operand 18 states.