/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/array-crafted/bAnd4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:14:27,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:14:27,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:14:27,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:14:27,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:14:27,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:14:27,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:14:27,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:14:27,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:14:27,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:14:27,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:14:27,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:14:27,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:14:27,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:14:27,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:14:27,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:14:27,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:14:27,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:14:27,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:14:27,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:14:27,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:14:27,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:14:27,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:14:27,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:14:27,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:14:27,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:14:27,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:14:27,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:14:27,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:14:27,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:14:27,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:14:27,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:14:27,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:14:27,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:14:27,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:14:27,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:14:27,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:14:27,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:14:27,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:14:27,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:14:27,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:14:27,511 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 [2020-10-13 23:14:27,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:14:27,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:14:27,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:14:27,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:14:27,551 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:14:27,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:14:27,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:14:27,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:14:27,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:14:27,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:14:27,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:14:27,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:14:27,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:14:27,554 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:14:27,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:14:27,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:14:27,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:14:27,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:14:27,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:14:27,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:14:27,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:14:27,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:14:27,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:14:27,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:14:27,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:14:27,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:14:27,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:14:27,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:14:27,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:14:27,560 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; [2020-10-13 23:14:27,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:14:27,854 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:14:27,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:14:27,859 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:14:27,859 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:14:27,860 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd4.i [2020-10-13 23:14:27,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee056bbd1/3519626ffe434242998df686355c6b28/FLAG1393781bc [2020-10-13 23:14:28,366 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:14:28,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bAnd4.i [2020-10-13 23:14:28,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee056bbd1/3519626ffe434242998df686355c6b28/FLAG1393781bc [2020-10-13 23:14:28,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee056bbd1/3519626ffe434242998df686355c6b28 [2020-10-13 23:14:28,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:14:28,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:14:28,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:14:28,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:14:28,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:14:28,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:14:28" (1/1) ... [2020-10-13 23:14:28,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b610eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:28, skipping insertion in model container [2020-10-13 23:14:28,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:14:28" (1/1) ... [2020-10-13 23:14:28,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:14:28,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:14:28,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:14:28,982 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:14:29,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:14:29,017 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:14:29,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:29 WrapperNode [2020-10-13 23:14:29,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:14:29,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:14:29,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:14:29,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:14:29,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:29" (1/1) ... [2020-10-13 23:14:29,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:29" (1/1) ... [2020-10-13 23:14:29,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:29" (1/1) ... [2020-10-13 23:14:29,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:29" (1/1) ... [2020-10-13 23:14:29,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:29" (1/1) ... [2020-10-13 23:14:29,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:29" (1/1) ... [2020-10-13 23:14:29,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:29" (1/1) ... [2020-10-13 23:14:29,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:14:29,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:14:29,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:14:29,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:14:29,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:29" (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 [2020-10-13 23:14:29,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:14:29,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:14:29,233 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2020-10-13 23:14:29,233 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:14:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:14:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:14:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2020-10-13 23:14:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:14:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:14:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:14:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:14:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:14:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:14:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:14:29,490 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:14:29,490 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:14:29,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:14:29 BoogieIcfgContainer [2020-10-13 23:14:29,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:14:29,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:14:29,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:14:29,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:14:29,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:14:28" (1/3) ... [2020-10-13 23:14:29,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae194a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:14:29, skipping insertion in model container [2020-10-13 23:14:29,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:29" (2/3) ... [2020-10-13 23:14:29,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae194a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:14:29, skipping insertion in model container [2020-10-13 23:14:29,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:14:29" (3/3) ... [2020-10-13 23:14:29,503 INFO L109 eAbstractionObserver]: Analyzing ICFG bAnd4.i [2020-10-13 23:14:29,515 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:14:29,523 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:14:29,539 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:14:29,576 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:14:29,576 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:14:29,577 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:14:29,577 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:14:29,577 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:14:29,577 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:14:29,578 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:14:29,578 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:14:29,601 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 23:14:29,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:14:29,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:29,610 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] [2020-10-13 23:14:29,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:29,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:29,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-13 23:14:29,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:29,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264891750] [2020-10-13 23:14:29,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:29,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:29,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:29,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:29,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:30,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:30,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:30,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:14:30,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:14:30,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-13 23:14:30,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:30,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:14:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:30,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:14:30,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:30,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:30,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:30,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:30,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:30,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 23:14:30,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:30,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:30,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:30,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:14:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:30,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:30,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:30,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:30,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:30,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:30,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:14:30,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:30,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:30,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:30,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:30,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:30,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:14:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:30,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:30,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:30,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:30,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:30,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:14:30,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:30,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:30,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:30,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:30,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:14:30,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:14:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:30,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:30,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:30,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:30,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:30,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:30,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:14:30,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:30,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:30,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:30,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:14:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:30,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:14:30,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264891750] [2020-10-13 23:14:30,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:14:30,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:14:30,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359344452] [2020-10-13 23:14:30,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:14:30,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:30,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:14:30,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:14:30,906 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 23:14:31,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:31,006 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 23:14:31,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:14:31,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 23:14:31,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:31,018 INFO L225 Difference]: With dead ends: 54 [2020-10-13 23:14:31,018 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 23:14:31,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:14:31,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 23:14:31,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 23:14:31,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 23:14:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 23:14:31,068 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 23:14:31,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:31,069 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 23:14:31,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:14:31,069 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 23:14:31,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:14:31,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:31,072 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] [2020-10-13 23:14:31,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:14:31,073 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:31,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:31,073 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2020-10-13 23:14:31,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:31,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466821661] [2020-10-13 23:14:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:31,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:31,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:31,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:31,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:31,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:31,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:14:31,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:14:31,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-10-13 23:14:31,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:31,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:31,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:31,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:14:31,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:14:31,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:31,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:31,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:31,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:31,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:31,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:31,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:31,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:31,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:14:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:31,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:31,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:31,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:31,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:31,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:31,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 23:14:31,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:31,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:31,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:31,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:14:31,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:14:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:31,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:31,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:31,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:31,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:31,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:14:31,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:31,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:31,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:14:31,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:14:31,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:31,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:14:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:31,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:31,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:31,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:31,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:31,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 23:14:31,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:31,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:31,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:14:31,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:31,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:31,928 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 23:14:31,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466821661] [2020-10-13 23:14:31,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:31,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 23:14:31,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624158623] [2020-10-13 23:14:31,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:14:31,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:31,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:14:31,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:14:31,932 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 23:14:32,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:32,062 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 23:14:32,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:14:32,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 23:14:32,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:32,065 INFO L225 Difference]: With dead ends: 45 [2020-10-13 23:14:32,066 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 23:14:32,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:14:32,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 23:14:32,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 23:14:32,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 23:14:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 23:14:32,085 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 23:14:32,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:32,085 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 23:14:32,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:14:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 23:14:32,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 23:14:32,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:32,091 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] [2020-10-13 23:14:32,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:14:32,093 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:32,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:32,094 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-13 23:14:32,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:32,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953405632] [2020-10-13 23:14:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:32,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:32,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:32,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:32,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:34,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:34,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 23:14:34,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:14:34,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2397 [2020-10-13 23:14:34,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:34,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:34,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:14:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:14:34,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:14:34,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:34,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:34,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:34,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:34,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:34,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:34,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:34,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:34,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:34,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:34,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:14:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:34,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:34,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:34,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:34,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:34,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:34,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:14:34,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:34,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:14:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:34,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 23:14:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:34,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:34,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:34,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:34,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:34,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:14:34,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:34,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:34,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:14:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:34,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:34,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:14:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:34,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:34,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:34,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:34,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:34,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:34,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:14:34,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:34,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:14:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 23:14:34,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953405632] [2020-10-13 23:14:34,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:14:34,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:14:34,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766703990] [2020-10-13 23:14:34,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:14:34,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:34,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:14:34,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:14:34,666 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 23:14:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:34,765 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-10-13 23:14:34,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:14:34,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 23:14:34,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:34,767 INFO L225 Difference]: With dead ends: 48 [2020-10-13 23:14:34,767 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 23:14:34,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:14:34,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 23:14:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 23:14:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 23:14:34,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 23:14:34,782 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 23:14:34,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:34,782 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 23:14:34,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:14:34,783 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 23:14:34,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 23:14:34,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:34,787 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] [2020-10-13 23:14:34,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:14:34,788 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:34,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:34,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2063023467, now seen corresponding path program 1 times [2020-10-13 23:14:34,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:34,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260551050] [2020-10-13 23:14:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:34,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:35,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:37,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:37,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 23:14:37,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:14:37,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2865 [2020-10-13 23:14:37,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:37,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:14:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:14:37,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:37,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:37,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:37,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:37,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:37,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:37,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:37,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:37,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:37,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:37,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:14:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:37,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:37,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:37,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:37,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:37,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:37,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:14:37,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:37,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:37,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:37,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:14:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:37,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:37,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:37,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:37,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:37,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:37,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 23:14:37,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:37,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:37,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:37,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:14:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:37,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:37,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:37,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:37,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:37,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:14:37,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:37,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:14:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:37,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 23:14:37,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260551050] [2020-10-13 23:14:37,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:14:37,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:14:37,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688349149] [2020-10-13 23:14:37,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:14:37,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:37,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:14:37,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:14:37,774 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 23:14:37,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:37,877 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-13 23:14:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:14:37,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 23:14:37,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:37,879 INFO L225 Difference]: With dead ends: 43 [2020-10-13 23:14:37,879 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 23:14:37,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:14:37,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 23:14:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 23:14:37,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 23:14:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 23:14:37,887 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 23:14:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:37,890 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 23:14:37,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:14:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 23:14:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 23:14:37,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:37,892 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] [2020-10-13 23:14:37,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:14:37,892 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:37,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668567, now seen corresponding path program 1 times [2020-10-13 23:14:37,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:37,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244217404] [2020-10-13 23:14:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:37,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:37,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:42,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:42,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 23:14:42,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:14:42,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4698 [2020-10-13 23:14:42,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:42,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:42,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:14:42,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:14:42,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:14:42,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:42,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:42,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:42,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:42,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:42,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:42,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:42,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:42,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:42,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:14:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:42,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:42,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:42,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:42,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:42,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:14:42,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:42,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:42,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:42,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:42,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:42,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:14:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:42,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:42,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:42,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:42,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:42,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:14:42,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:42,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:42,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:42,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 23:14:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:42,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:42,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:42,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:42,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:42,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:42,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:14:42,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:42,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:42,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:42,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:14:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:42,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 23:14:42,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244217404] [2020-10-13 23:14:42,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:42,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:14:42,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282206132] [2020-10-13 23:14:42,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:14:42,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:42,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:14:42,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:14:42,735 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 23:14:42,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:42,842 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-13 23:14:42,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:14:42,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 23:14:42,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:42,844 INFO L225 Difference]: With dead ends: 45 [2020-10-13 23:14:42,844 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 23:14:42,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:14:42,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 23:14:42,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 23:14:42,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 23:14:42,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 23:14:42,852 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 23:14:42,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:42,852 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 23:14:42,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:14:42,853 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 23:14:42,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 23:14:42,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:42,854 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-13 23:14:42,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:14:42,854 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:42,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:42,855 INFO L82 PathProgramCache]: Analyzing trace with hash 319829223, now seen corresponding path program 2 times [2020-10-13 23:14:42,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:42,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041687109] [2020-10-13 23:14:42,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:42,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:42,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:42,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:43,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:47,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:47,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 23:14:47,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:14:47,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:14:47,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:47,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:14:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:14:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:47,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:47,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:47,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:47,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:47,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:47,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:47,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:47,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:47,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:47,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:47,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:47,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:47,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:47,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:14:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:47,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:47,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:47,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:47,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:47,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:47,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 23:14:47,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:47,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:47,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:47,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:14:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:47,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:47,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:47,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:47,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:47,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:47,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 23:14:47,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:47,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:47,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:47,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 23:14:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:47,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:47,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:47,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:47,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:47,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:47,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 23:14:47,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:47,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:14:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:47,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 23:14:47,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041687109] [2020-10-13 23:14:47,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:47,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:14:47,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410774855] [2020-10-13 23:14:47,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:14:47,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:47,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:14:47,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:14:47,966 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-13 23:14:48,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:48,063 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-10-13 23:14:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:14:48,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-13 23:14:48,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:48,065 INFO L225 Difference]: With dead ends: 47 [2020-10-13 23:14:48,065 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 23:14:48,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:14:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 23:14:48,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 23:14:48,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 23:14:48,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 23:14:48,076 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 44 [2020-10-13 23:14:48,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:48,077 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 23:14:48,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:14:48,077 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 23:14:48,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 23:14:48,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:48,078 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-13 23:14:48,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:14:48,079 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:48,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:48,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1723091611, now seen corresponding path program 3 times [2020-10-13 23:14:48,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:48,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426607781] [2020-10-13 23:14:48,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:48,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:48,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:48,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:48,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:53,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:53,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 23:14:53,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:14:53,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:14:53,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:53,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:14:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:14:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:14:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:53,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:53,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:53,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:53,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:53,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:53,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:53,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:53,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:53,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:53,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:53,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:53,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:14:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:53,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:53,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:53,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:53,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:53,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:53,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 23:14:53,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:53,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:53,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:53,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:14:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:53,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:53,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:53,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:53,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:14:53,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:53,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:14:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:14:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:14:53,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:53,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 23:14:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:53,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:53,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:53,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:53,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:14:53,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:53,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:14:53,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:53,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:14:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:53,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-13 23:14:53,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426607781] [2020-10-13 23:14:53,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:53,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:14:53,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458830222] [2020-10-13 23:14:53,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:14:53,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:53,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:14:53,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:14:53,198 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 23:14:53,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:53,338 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-13 23:14:53,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:14:53,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-13 23:14:53,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:53,341 INFO L225 Difference]: With dead ends: 59 [2020-10-13 23:14:53,341 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 23:14:53,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:14:53,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 23:14:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 23:14:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 23:14:53,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 23:14:53,352 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 46 [2020-10-13 23:14:53,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:53,352 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 23:14:53,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:14:53,352 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 23:14:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 23:14:53,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:53,355 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-10-13 23:14:53,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:14:53,355 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:53,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:53,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1269979747, now seen corresponding path program 4 times [2020-10-13 23:14:53,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:53,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535579264] [2020-10-13 23:14:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:53,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:54,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:58,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:58,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 23:14:58,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:14:58,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:14:58,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:58,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:14:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:14:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:58,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:58,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:58,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:58,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:58,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:58,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:58,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:58,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:58,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:58,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:58,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:14:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:58,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:58,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:58,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:14:58,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:14:58,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:58,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:58,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:58,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:14:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:58,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:58,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:58,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:14:58,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:58,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:14:58,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:58,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:14:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:14:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:58,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 23:14:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:58,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:58,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:58,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:58,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:14:58,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:58,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:14:58,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:58,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:14:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:58,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 23:14:58,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535579264] [2020-10-13 23:14:58,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:58,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:14:58,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434856156] [2020-10-13 23:14:58,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:14:58,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:58,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:14:58,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:14:58,509 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 23:14:58,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:58,633 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-13 23:14:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:14:58,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 23:14:58,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:58,634 INFO L225 Difference]: With dead ends: 63 [2020-10-13 23:14:58,634 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 23:14:58,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:14:58,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 23:14:58,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 23:14:58,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 23:14:58,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 23:14:58,650 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-13 23:14:58,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:58,650 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 23:14:58,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:14:58,651 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 23:14:58,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 23:14:58,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:58,652 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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] [2020-10-13 23:14:58,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:14:58,654 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:58,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:58,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1497008353, now seen corresponding path program 5 times [2020-10-13 23:14:58,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:58,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512287782] [2020-10-13 23:14:58,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:58,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:58,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:58,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:00,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:03,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:15:03,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:03,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:15:03,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:03,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:03,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:03,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:03,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:03,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:03,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:03,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:03,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:03,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:03,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:03,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:03,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:03,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:03,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:03,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:03,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:03,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:03,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:03,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:03,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:03,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:15:03,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:03,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:03,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:03,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 23:15:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:03,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:03,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:03,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:03,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:15:03,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:03,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:03,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:03,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:03,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:03,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:03,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 23:15:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:03,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:03,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:03,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:03,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 23:15:03,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:03,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:03,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 23:15:03,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512287782] [2020-10-13 23:15:03,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:03,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:15:03,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290423558] [2020-10-13 23:15:03,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:15:03,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:03,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:15:03,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:03,775 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-10-13 23:15:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:03,846 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-13 23:15:03,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:15:03,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 23:15:03,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:03,848 INFO L225 Difference]: With dead ends: 68 [2020-10-13 23:15:03,848 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 23:15:03,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:03,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 23:15:03,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 23:15:03,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 23:15:03,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 23:15:03,854 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-13 23:15:03,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:03,855 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 23:15:03,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:15:03,855 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 23:15:03,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:15:03,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:03,856 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 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] [2020-10-13 23:15:03,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:15:03,856 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:03,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:03,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1355149629, now seen corresponding path program 6 times [2020-10-13 23:15:03,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:03,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262823052] [2020-10-13 23:15:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:03,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:08,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 23:15:08,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:08,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:15:08,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:08,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:08,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:08,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 23:15:08,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:08,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:08,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:08,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:08,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:08,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:08,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:08,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:08,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:08,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:08,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:15:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:08,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:08,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:08,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:08,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 23:15:08,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:08,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:08,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:08,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:08,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 23:15:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:08,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:08,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:08,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:15:08,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:08,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:08,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:08,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 23:15:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:08,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:08,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:08,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:15:08,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:08,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-13 23:15:08,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262823052] [2020-10-13 23:15:08,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:08,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:15:08,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317203440] [2020-10-13 23:15:08,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:15:08,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:08,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:15:08,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:08,979 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2020-10-13 23:15:09,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:09,110 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-10-13 23:15:09,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:15:09,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-10-13 23:15:09,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:09,111 INFO L225 Difference]: With dead ends: 69 [2020-10-13 23:15:09,111 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 23:15:09,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:15:09,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 23:15:09,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 23:15:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 23:15:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 23:15:09,127 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 23:15:09,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:09,127 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 23:15:09,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:15:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 23:15:09,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 23:15:09,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:09,129 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 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] [2020-10-13 23:15:09,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:15:09,132 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:09,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:09,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1343834815, now seen corresponding path program 7 times [2020-10-13 23:15:09,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:09,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036277913] [2020-10-13 23:15:09,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:09,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:09,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:09,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:09,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:13,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:14,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 23:15:14,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:14,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:15:14,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:14,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:14,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:14,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 23:15:14,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:14,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:14,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:14,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:14,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:14,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:14,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:14,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:14,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:14,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:14,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:15:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:14,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:14,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:14,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:15:14,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:14,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:14,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:14,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:14,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:14,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:14,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 23:15:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:14,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:14,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:14,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:14,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:14,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:14,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:14,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:14,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 23:15:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:14,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:14,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:14,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:14,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:15:14,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:14,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:14,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:14,260 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-13 23:15:14,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036277913] [2020-10-13 23:15:14,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:14,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:15:14,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101387961] [2020-10-13 23:15:14,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:15:14,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:14,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:15:14,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:14,262 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 23:15:14,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:14,350 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-13 23:15:14,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:15:14,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-13 23:15:14,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:14,352 INFO L225 Difference]: With dead ends: 63 [2020-10-13 23:15:14,352 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 23:15:14,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:14,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 23:15:14,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 23:15:14,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 23:15:14,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 23:15:14,358 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 66 [2020-10-13 23:15:14,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:14,358 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 23:15:14,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:15:14,358 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 23:15:14,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 23:15:14,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:14,359 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 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] [2020-10-13 23:15:14,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:15:14,360 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:14,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:14,360 INFO L82 PathProgramCache]: Analyzing trace with hash 905336639, now seen corresponding path program 8 times [2020-10-13 23:15:14,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:14,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992278930] [2020-10-13 23:15:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:14,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:19,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 23:15:19,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:19,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:15:19,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:19,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:19,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:19,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:19,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:19,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:19,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:19,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:15:19,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:19,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:19,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:19,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:19,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:19,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:19,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:15:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:19,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:19,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:19,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:19,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 23:15:19,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:19,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:19,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:19,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:19,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 23:15:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:19,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:19,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:15:19,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:19,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:19,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:15:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:19,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:19,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:19,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:19,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:15:19,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:19,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:19,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 23:15:19,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992278930] [2020-10-13 23:15:19,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:19,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:15:19,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852219501] [2020-10-13 23:15:19,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:15:19,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:19,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:15:19,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:19,462 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-10-13 23:15:19,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:19,542 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-10-13 23:15:19,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:15:19,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-13 23:15:19,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:19,543 INFO L225 Difference]: With dead ends: 78 [2020-10-13 23:15:19,543 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 23:15:19,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 23:15:19,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 23:15:19,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 23:15:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 23:15:19,550 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-13 23:15:19,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:19,551 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 23:15:19,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:15:19,551 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 23:15:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 23:15:19,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:19,552 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 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] [2020-10-13 23:15:19,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:15:19,552 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:19,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:19,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1678153055, now seen corresponding path program 9 times [2020-10-13 23:15:19,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:19,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439876076] [2020-10-13 23:15:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:19,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:24,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 23:15:24,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:24,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:15:24,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:24,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:24,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:15:24,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 23:15:24,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:15:24,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:24,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:24,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:24,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:24,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:24,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:24,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:24,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:24,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:24,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:24,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:24,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:15:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:24,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:24,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:15:24,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:24,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:24,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:24,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:24,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:24,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:24,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 23:15:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:24,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:24,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:24,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:24,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:15:24,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:24,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:24,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 23:15:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:24,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:24,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:24,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:15:24,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:24,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:24,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-13 23:15:24,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439876076] [2020-10-13 23:15:24,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:24,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:15:24,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614719989] [2020-10-13 23:15:24,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:15:24,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:24,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:15:24,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:15:24,710 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2020-10-13 23:15:24,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:24,780 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-10-13 23:15:24,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:15:24,780 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-13 23:15:24,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:24,781 INFO L225 Difference]: With dead ends: 67 [2020-10-13 23:15:24,781 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 23:15:24,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:15:24,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 23:15:24,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 23:15:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 23:15:24,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 23:15:24,789 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 23:15:24,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:24,790 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 23:15:24,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:15:24,790 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 23:15:24,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 23:15:24,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:24,792 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 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] [2020-10-13 23:15:24,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:15:24,792 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:24,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:24,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1748055199, now seen corresponding path program 10 times [2020-10-13 23:15:24,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:24,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263598304] [2020-10-13 23:15:24,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:29,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 23:15:29,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:29,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:15:29,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:29,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:15:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 23:15:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:15:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:29,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:29,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:29,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:29,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:29,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:29,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:29,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:29,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:29,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:15:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:29,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:29,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:29,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:29,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:15:29,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:29,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:29,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:29,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:29,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:29,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:29,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 23:15:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:29,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:29,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:29,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:29,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:15:29,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:29,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:29,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:29,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:29,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:29,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:29,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 23:15:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:29,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:29,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:29,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:29,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:15:29,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:29,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:29,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-13 23:15:29,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263598304] [2020-10-13 23:15:29,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:29,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:15:29,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364850592] [2020-10-13 23:15:29,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:15:29,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:29,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:15:29,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:15:29,924 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 9 states. [2020-10-13 23:15:30,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:30,034 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-10-13 23:15:30,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:15:30,034 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-13 23:15:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:30,035 INFO L225 Difference]: With dead ends: 69 [2020-10-13 23:15:30,036 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 23:15:30,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:15:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 23:15:30,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 23:15:30,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 23:15:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 23:15:30,042 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 72 [2020-10-13 23:15:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:30,043 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 23:15:30,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:15:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 23:15:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 23:15:30,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:30,044 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 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] [2020-10-13 23:15:30,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:15:30,044 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:30,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:30,045 INFO L82 PathProgramCache]: Analyzing trace with hash 94271261, now seen corresponding path program 11 times [2020-10-13 23:15:30,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:30,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429332462] [2020-10-13 23:15:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:30,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:30,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:30,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:30,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:35,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 23:15:35,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:35,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:15:35,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:35,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:35,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:15:35,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 23:15:35,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:15:35,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:35,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:35,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:35,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:35,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:35,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:35,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:35,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:35,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:35,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:15:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:35,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:35,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:35,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:35,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:15:35,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:35,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:15:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:15:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:35,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 23:15:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:35,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:35,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:35,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:35,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:15:35,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:35,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:35,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:35,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:35,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:35,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 23:15:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:35,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:35,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:35,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:35,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:15:35,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:35,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:35,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:35,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:35,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:35,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-13 23:15:35,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429332462] [2020-10-13 23:15:35,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:35,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:15:35,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135069852] [2020-10-13 23:15:35,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:15:35,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:35,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:15:35,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:15:35,195 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 23:15:35,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:35,334 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-13 23:15:35,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:15:35,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-10-13 23:15:35,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:35,336 INFO L225 Difference]: With dead ends: 87 [2020-10-13 23:15:35,336 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 23:15:35,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:15:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 23:15:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 23:15:35,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 23:15:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 23:15:35,342 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 74 [2020-10-13 23:15:35,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:35,342 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 23:15:35,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:15:35,343 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 23:15:35,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 23:15:35,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:35,343 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 6, 6, 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] [2020-10-13 23:15:35,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:15:35,344 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:35,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:35,344 INFO L82 PathProgramCache]: Analyzing trace with hash -2116022501, now seen corresponding path program 12 times [2020-10-13 23:15:35,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:35,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741544400] [2020-10-13 23:15:35,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:40,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 23:15:40,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:40,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:15:40,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:40,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:15:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 23:15:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:15:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:40,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:40,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:40,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:40,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:40,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:40,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:40,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:40,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:40,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:40,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:40,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:40,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:15:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:40,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:40,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:15:40,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:40,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 23:15:40,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:40,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:15:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:15:40,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:40,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:15:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:40,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:15:40,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:40,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:15:40,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:40,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:40,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:15:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:40,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:40,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:15:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:40,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:40,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:15:40,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:40,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 23:15:40,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:40,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:40,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:40,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:15:40,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:40,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-13 23:15:40,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741544400] [2020-10-13 23:15:40,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:40,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:15:40,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411697802] [2020-10-13 23:15:40,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:15:40,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:40,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:15:40,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:15:40,530 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-13 23:15:40,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:40,704 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-13 23:15:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:15:40,705 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-13 23:15:40,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:40,706 INFO L225 Difference]: With dead ends: 91 [2020-10-13 23:15:40,706 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 23:15:40,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:15:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 23:15:40,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 23:15:40,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 23:15:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 23:15:40,718 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-13 23:15:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:40,719 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 23:15:40,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:15:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 23:15:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 23:15:40,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:40,720 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 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] [2020-10-13 23:15:40,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:15:40,720 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:40,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:40,721 INFO L82 PathProgramCache]: Analyzing trace with hash 139423897, now seen corresponding path program 13 times [2020-10-13 23:15:40,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:40,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468362446] [2020-10-13 23:15:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:40,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:45,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 23:15:45,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:45,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:15:45,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:45,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:45,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:45,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:45,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:45,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:45,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:45,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:45,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:45,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:45,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:45,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:45,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:45,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:45,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:15:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:45,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:45,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:45,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:45,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:15:45,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:45,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:45,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:45,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:15:45,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:45,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:45,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 23:15:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:45,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:45,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:45,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:15:45,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:45,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:15:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:45,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 23:15:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:45,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:45,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:45,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:45,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:15:45,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:45,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:15:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:45,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 23:15:45,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468362446] [2020-10-13 23:15:45,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:45,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:15:45,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152457415] [2020-10-13 23:15:45,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:15:45,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:45,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:15:45,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:45,843 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-10-13 23:15:45,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:45,931 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-13 23:15:45,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:15:45,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-13 23:15:45,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:45,932 INFO L225 Difference]: With dead ends: 96 [2020-10-13 23:15:45,933 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 23:15:45,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:45,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 23:15:45,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 23:15:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 23:15:45,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 23:15:45,947 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-13 23:15:45,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:45,948 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 23:15:45,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:15:45,948 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 23:15:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 23:15:45,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:45,950 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 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] [2020-10-13 23:15:45,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:15:45,950 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:45,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:45,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1947021179, now seen corresponding path program 14 times [2020-10-13 23:15:45,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:45,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136599632] [2020-10-13 23:15:45,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:45,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:46,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:50,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:50,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 23:15:50,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:15:50,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:50,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:15:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 23:15:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:15:50,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:51,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:51,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:51,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:51,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:51,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:51,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:51,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:51,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:51,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:51,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:51,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:51,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:15:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:51,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:51,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:51,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:51,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:51,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:51,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:51,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 23:15:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:51,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:51,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:51,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:51,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:51,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:51,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:15:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:51,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:51,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:51,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:15:51,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:51,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:51,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:51,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:15:51,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:51,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2020-10-13 23:15:51,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136599632] [2020-10-13 23:15:51,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:51,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:15:51,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020069847] [2020-10-13 23:15:51,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:15:51,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:51,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:15:51,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:15:51,111 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 10 states. [2020-10-13 23:15:51,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:51,238 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-10-13 23:15:51,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:15:51,238 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-13 23:15:51,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:51,239 INFO L225 Difference]: With dead ends: 81 [2020-10-13 23:15:51,239 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 23:15:51,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:15:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 23:15:51,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 23:15:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 23:15:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 23:15:51,249 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-13 23:15:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:51,249 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 23:15:51,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:15:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 23:15:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 23:15:51,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:51,253 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 7, 7, 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] [2020-10-13 23:15:51,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:15:51,254 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:51,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:51,254 INFO L82 PathProgramCache]: Analyzing trace with hash -241366279, now seen corresponding path program 15 times [2020-10-13 23:15:51,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:51,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957511559] [2020-10-13 23:15:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:51,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:56,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 23:15:56,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:15:56,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:56,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:15:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 23:15:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:15:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:56,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:56,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:56,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:56,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:15:56,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:56,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:56,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:56,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:56,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:15:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:56,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:56,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:56,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:56,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:15:56,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:56,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:56,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:56,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 23:15:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:56,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:56,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:56,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:56,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:15:56,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:56,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:15:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:15:56,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:56,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:15:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:56,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:56,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:15:56,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:56,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:56,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:56,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:15:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:56,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 88 proven. 124 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-10-13 23:15:56,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957511559] [2020-10-13 23:15:56,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:56,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:15:56,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211411054] [2020-10-13 23:15:56,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:15:56,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:56,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:15:56,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:15:56,422 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-13 23:15:56,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:56,620 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-10-13 23:15:56,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:15:56,621 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-10-13 23:15:56,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:56,622 INFO L225 Difference]: With dead ends: 101 [2020-10-13 23:15:56,622 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 23:15:56,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:15:56,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 23:15:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 23:15:56,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 23:15:56,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 23:15:56,629 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 90 [2020-10-13 23:15:56,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:56,629 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 23:15:56,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:15:56,629 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 23:15:56,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 23:15:56,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:56,632 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 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] [2020-10-13 23:15:56,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:15:56,632 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:56,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:56,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1882123511, now seen corresponding path program 16 times [2020-10-13 23:15:56,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:56,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393721987] [2020-10-13 23:15:56,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:56,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:01,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 23:16:01,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:01,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:16:01,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:01,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:16:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:16:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:01,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:01,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:01,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:01,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:01,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:01,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:01,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:01,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:01,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:16:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:01,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:01,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:01,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:01,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:16:01,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:01,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:01,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:01,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 23:16:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:01,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:01,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:01,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:01,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:16:01,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:01,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:01,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:01,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:01,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:16:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:01,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:01,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:01,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:01,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:16:01,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:01,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:01,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:01,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:01,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:01,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 23:16:01,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393721987] [2020-10-13 23:16:01,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:01,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:16:01,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451882251] [2020-10-13 23:16:01,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:16:01,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:01,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:16:01,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:16:01,768 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 8 states. [2020-10-13 23:16:01,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:01,853 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2020-10-13 23:16:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:16:01,854 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-13 23:16:01,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:01,855 INFO L225 Difference]: With dead ends: 106 [2020-10-13 23:16:01,855 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 23:16:01,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:16:01,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 23:16:01,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 23:16:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 23:16:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 23:16:01,861 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-13 23:16:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:01,862 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 23:16:01,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:16:01,862 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 23:16:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 23:16:01,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:01,863 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 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] [2020-10-13 23:16:01,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:16:01,863 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:01,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:01,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1111292249, now seen corresponding path program 17 times [2020-10-13 23:16:01,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:01,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184495480] [2020-10-13 23:16:01,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:01,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:06,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 23:16:06,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:06,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:16:06,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:06,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:06,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:06,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 23:16:06,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:06,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:06,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:06,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:06,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:06,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:06,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:16:06,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:06,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:06,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:06,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:06,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:06,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:06,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:16:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:06,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:06,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:06,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:06,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:16:06,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:06,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:06,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:06,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 23:16:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:06,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:06,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:06,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:06,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:16:06,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:06,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:06,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:06,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 23:16:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:07,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:07,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:07,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:16:07,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:07,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:07,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 116 proven. 165 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-13 23:16:07,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184495480] [2020-10-13 23:16:07,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:07,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:16:07,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184502325] [2020-10-13 23:16:07,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:16:07,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:07,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:16:07,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:16:07,030 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-13 23:16:07,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:07,246 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-10-13 23:16:07,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:16:07,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-13 23:16:07,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:07,248 INFO L225 Difference]: With dead ends: 107 [2020-10-13 23:16:07,248 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 23:16:07,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:16:07,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 23:16:07,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 23:16:07,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 23:16:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 23:16:07,254 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-13 23:16:07,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:07,255 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 23:16:07,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:16:07,255 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 23:16:07,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 23:16:07,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:07,256 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 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] [2020-10-13 23:16:07,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:16:07,256 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:07,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:07,257 INFO L82 PathProgramCache]: Analyzing trace with hash 408802135, now seen corresponding path program 18 times [2020-10-13 23:16:07,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:07,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798240407] [2020-10-13 23:16:07,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:12,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 23:16:12,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:12,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:16:12,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:12,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:12,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:12,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 23:16:12,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:12,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:12,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:12,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:12,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:12,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:12,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:16:12,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:12,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:12,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:12,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:12,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:12,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:12,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:16:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:12,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:12,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:12,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:12,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:16:12,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:12,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:12,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:12,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:12,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:12,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:12,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:16:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:12,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:12,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:12,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:12,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:16:12,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:12,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:12,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:12,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:12,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:12,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:12,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:16:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:12,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:12,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:12,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:12,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:16:12,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:12,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-13 23:16:12,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798240407] [2020-10-13 23:16:12,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:12,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:16:12,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816830690] [2020-10-13 23:16:12,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:16:12,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:12,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:16:12,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:16:12,428 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-13 23:16:12,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:12,538 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-10-13 23:16:12,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:16:12,541 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-13 23:16:12,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:12,542 INFO L225 Difference]: With dead ends: 93 [2020-10-13 23:16:12,542 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 23:16:12,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:16:12,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 23:16:12,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 23:16:12,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 23:16:12,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 23:16:12,547 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 104 [2020-10-13 23:16:12,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:12,547 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 23:16:12,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:16:12,548 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 23:16:12,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 23:16:12,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:12,549 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 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] [2020-10-13 23:16:12,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:16:12,549 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:12,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:12,550 INFO L82 PathProgramCache]: Analyzing trace with hash -577108011, now seen corresponding path program 19 times [2020-10-13 23:16:12,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:12,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477353459] [2020-10-13 23:16:12,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:12,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:17,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 23:16:17,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:17,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:16:17,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:17,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:16:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:16:17,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:17,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:17,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:17,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:17,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:17,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:17,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:17,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:17,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:17,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:16:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:17,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:17,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:17,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:16:17,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:17,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:17,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:16:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:17,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:17,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:17,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:17,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:16:17,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:17,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:17,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:16:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:17,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:17,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:17,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:16:17,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:17,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 23:16:17,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477353459] [2020-10-13 23:16:17,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:17,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:16:17,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227300658] [2020-10-13 23:16:17,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:16:17,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:17,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:16:17,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:17,717 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 9 states. [2020-10-13 23:16:17,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:17,800 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-13 23:16:17,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:16:17,801 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-13 23:16:17,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:17,802 INFO L225 Difference]: With dead ends: 116 [2020-10-13 23:16:17,802 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 23:16:17,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:17,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 23:16:17,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 23:16:17,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 23:16:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 23:16:17,808 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-13 23:16:17,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:17,808 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 23:16:17,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:16:17,808 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 23:16:17,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 23:16:17,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:17,809 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 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] [2020-10-13 23:16:17,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:16:17,810 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:17,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:17,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1374322249, now seen corresponding path program 20 times [2020-10-13 23:16:17,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:17,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392341882] [2020-10-13 23:16:17,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:17,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:22,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 23:16:22,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 23:16:22,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:22,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:16:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-13 23:16:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:16:22,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:22,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:22,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:22,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:22,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:22,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:22,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:22,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:22,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:22,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:16:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:22,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:22,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:22,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:22,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:16:22,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:22,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:22,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:22,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 23:16:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:22,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:22,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:22,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:22,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:16:22,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:22,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:22,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:22,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 23:16:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:22,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:22,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:22,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:22,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:16:22,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:22,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:22,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:22,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:22,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:22,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2020-10-13 23:16:23,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392341882] [2020-10-13 23:16:23,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:23,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:16:23,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917605594] [2020-10-13 23:16:23,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:16:23,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:23,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:16:23,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:16:23,005 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-13 23:16:23,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:23,127 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-13 23:16:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:16:23,128 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-13 23:16:23,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:23,129 INFO L225 Difference]: With dead ends: 97 [2020-10-13 23:16:23,129 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 23:16:23,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:16:23,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 23:16:23,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 23:16:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 23:16:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 23:16:23,135 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-13 23:16:23,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:23,136 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 23:16:23,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:16:23,136 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 23:16:23,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 23:16:23,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:23,137 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 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] [2020-10-13 23:16:23,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:16:23,140 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:23,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:23,141 INFO L82 PathProgramCache]: Analyzing trace with hash -467689931, now seen corresponding path program 21 times [2020-10-13 23:16:23,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:23,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839306752] [2020-10-13 23:16:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:23,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 23:16:28,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:28,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:16:28,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:16:28,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-13 23:16:28,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:16:28,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:28,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:28,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:28,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:28,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:16:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:28,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:28,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:16:28,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:28,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 23:16:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:28,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:28,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:28,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:16:28,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:28,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:28,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:28,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 23:16:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:28,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:28,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:28,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 23:16:28,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:28,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2020-10-13 23:16:28,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839306752] [2020-10-13 23:16:28,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:28,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:16:28,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651181132] [2020-10-13 23:16:28,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:16:28,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:28,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:16:28,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:16:28,349 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-13 23:16:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:28,477 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-10-13 23:16:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:16:28,478 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 110 [2020-10-13 23:16:28,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:28,479 INFO L225 Difference]: With dead ends: 99 [2020-10-13 23:16:28,479 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 23:16:28,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:16:28,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 23:16:28,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 23:16:28,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 23:16:28,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 23:16:28,484 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-13 23:16:28,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:28,484 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 23:16:28,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:16:28,485 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 23:16:28,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 23:16:28,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:28,486 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 10, 10, 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] [2020-10-13 23:16:28,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:16:28,486 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:28,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:28,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1072393421, now seen corresponding path program 22 times [2020-10-13 23:16:28,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:28,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99497940] [2020-10-13 23:16:28,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:33,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 23:16:33,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:33,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:16:33,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:33,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:16:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 23:16:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:16:33,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:33,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:33,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:33,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:33,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:33,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:16:33,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:33,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:33,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:33,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:16:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:33,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:33,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:33,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:33,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:16:33,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:33,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:16:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:16:33,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:33,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 23:16:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:33,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:33,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:33,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:33,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 23:16:33,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:33,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:33,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:16:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:33,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:33,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:33,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:33,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:16:33,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:33,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:33,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:33,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:33,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:33,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2020-10-13 23:16:33,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99497940] [2020-10-13 23:16:33,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:33,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:16:33,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151147921] [2020-10-13 23:16:33,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:16:33,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:33,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:16:33,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:16:33,696 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 23:16:33,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:33,937 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2020-10-13 23:16:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:16:33,938 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 23:16:33,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:33,939 INFO L225 Difference]: With dead ends: 125 [2020-10-13 23:16:33,939 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 23:16:33,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:16:33,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 23:16:33,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 23:16:33,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 23:16:33,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 23:16:33,945 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-13 23:16:33,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:33,945 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 23:16:33,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:16:33,945 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 23:16:33,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 23:16:33,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:33,947 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 10, 10, 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] [2020-10-13 23:16:33,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:16:33,947 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:33,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:33,947 INFO L82 PathProgramCache]: Analyzing trace with hash 2003844785, now seen corresponding path program 23 times [2020-10-13 23:16:33,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:33,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791395321] [2020-10-13 23:16:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:33,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:38,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:38,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 23:16:38,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:38,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 23:16:38,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:38,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:16:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 23:16:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:16:38,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:38,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:38,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:38,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:38,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:38,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:38,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:16:38,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:38,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:38,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:38,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:38,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:38,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:38,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:16:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:38,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:39,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:16:39,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:39,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 23:16:39,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:39,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:39,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:16:39,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:39,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:16:39,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:39,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 23:16:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:39,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:39,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:16:39,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:39,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 23:16:39,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:39,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:16:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:39,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:16:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:39,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:39,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:16:39,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:39,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:16:39,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:39,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:16:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:39,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2020-10-13 23:16:39,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791395321] [2020-10-13 23:16:39,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:39,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:16:39,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665140710] [2020-10-13 23:16:39,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:16:39,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:39,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:16:39,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:16:39,170 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-13 23:16:39,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:39,424 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-10-13 23:16:39,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:16:39,425 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 118 [2020-10-13 23:16:39,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:39,426 INFO L225 Difference]: With dead ends: 129 [2020-10-13 23:16:39,426 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 23:16:39,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:16:39,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 23:16:39,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 23:16:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 23:16:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 23:16:39,432 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 118 [2020-10-13 23:16:39,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:39,432 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 23:16:39,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:16:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 23:16:39,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 23:16:39,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:39,433 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 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] [2020-10-13 23:16:39,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:16:39,434 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:39,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:39,434 INFO L82 PathProgramCache]: Analyzing trace with hash 695931823, now seen corresponding path program 24 times [2020-10-13 23:16:39,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:39,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125316944] [2020-10-13 23:16:39,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:44,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 23:16:44,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:44,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 23:16:44,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:44,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:16:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:16:44,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:44,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:44,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:44,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:44,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:44,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:44,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:44,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:44,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:44,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 23:16:44,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:16:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:44,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:44,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:44,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:44,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 23:16:44,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:44,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:44,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:44,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:16:44,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:44,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:44,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:16:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:44,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:44,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:44,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 23:16:44,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:44,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:16:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:44,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:44,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:16:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:44,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:44,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:44,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 23:16:44,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:44,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:16:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 23:16:44,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125316944] [2020-10-13 23:16:44,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:44,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:16:44,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217014511] [2020-10-13 23:16:44,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:16:44,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:44,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:16:44,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:44,634 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 10 states. [2020-10-13 23:16:44,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:44,737 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-13 23:16:44,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:16:44,737 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-13 23:16:44,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:44,738 INFO L225 Difference]: With dead ends: 134 [2020-10-13 23:16:44,738 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 23:16:44,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:44,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 23:16:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 23:16:44,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 23:16:44,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 23:16:44,749 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-13 23:16:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:44,750 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 23:16:44,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:16:44,750 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 23:16:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 23:16:44,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:44,752 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 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] [2020-10-13 23:16:44,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:16:44,753 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:44,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:44,753 INFO L82 PathProgramCache]: Analyzing trace with hash 164927761, now seen corresponding path program 25 times [2020-10-13 23:16:44,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:44,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385150374] [2020-10-13 23:16:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:44,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:49,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:49,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 23:16:49,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:49,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:16:49,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:49,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:49,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:16:49,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 23:16:49,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:16:49,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:49,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:49,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:49,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:49,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:49,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:49,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:49,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:49,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:49,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:49,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:16:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:49,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:49,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:49,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:49,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:49,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 23:16:49,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:49,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:49,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:49,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:49,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:49,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:49,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 23:16:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:49,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:49,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:49,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:49,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:16:49,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:49,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:16:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:16:49,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:49,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:16:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:49,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:49,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:49,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:49,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:16:49,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:49,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 23:16:49,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:49,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:49,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:49,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:16:49,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:49,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2020-10-13 23:16:49,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385150374] [2020-10-13 23:16:49,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:49,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:16:49,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661214374] [2020-10-13 23:16:49,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:16:49,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:49,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:16:49,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:16:49,999 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-13 23:16:50,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:50,265 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-10-13 23:16:50,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:16:50,265 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-13 23:16:50,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:50,266 INFO L225 Difference]: With dead ends: 135 [2020-10-13 23:16:50,266 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 23:16:50,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:16:50,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 23:16:50,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 23:16:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 23:16:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 23:16:50,273 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-13 23:16:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:50,274 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 23:16:50,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:16:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 23:16:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 23:16:50,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:50,275 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 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] [2020-10-13 23:16:50,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:16:50,275 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:50,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1086055951, now seen corresponding path program 26 times [2020-10-13 23:16:50,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:50,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570238181] [2020-10-13 23:16:50,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:50,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 23:16:55,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:16:55,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:16:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 23:16:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:16:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:55,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:55,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:55,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:55,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:16:55,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:55,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:55,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:55,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:55,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:16:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:55,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:16:55,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:55,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 23:16:55,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:55,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:55,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:55,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:55,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 23:16:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:55,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:16:55,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:55,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:16:55,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:55,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:55,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 23:16:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:55,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:16:55,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:55,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:16:55,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:55,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:16:55,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:55,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked. [2020-10-13 23:16:55,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570238181] [2020-10-13 23:16:55,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:55,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:16:55,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630063831] [2020-10-13 23:16:55,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:16:55,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:55,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:16:55,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:16:55,527 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-13 23:16:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:55,614 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-13 23:16:55,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:16:55,614 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-13 23:16:55,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:55,615 INFO L225 Difference]: With dead ends: 115 [2020-10-13 23:16:55,616 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 23:16:55,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:16:55,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 23:16:55,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 23:16:55,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 23:16:55,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 23:16:55,621 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 132 [2020-10-13 23:16:55,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:55,622 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 23:16:55,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:16:55,622 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 23:16:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 23:16:55,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:55,623 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 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] [2020-10-13 23:16:55,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:16:55,623 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:55,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:55,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1727718259, now seen corresponding path program 27 times [2020-10-13 23:16:55,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:55,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683503001] [2020-10-13 23:16:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:55,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:00,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:00,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 23:17:00,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:00,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 23:17:00,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:00,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:17:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:17:00,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:00,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:00,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:00,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:00,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:00,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:00,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:00,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:00,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:00,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:00,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:17:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:00,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:00,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:00,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:00,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:00,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:00,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 23:17:00,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:00,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:00,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:00,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 23:17:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:00,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:00,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:00,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:00,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:00,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:00,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:17:00,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:00,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:00,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:00,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:00,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:00,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:00,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:17:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:00,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:00,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:00,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:00,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:00,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:00,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 23:17:00,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:00,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:00,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 23:17:00,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683503001] [2020-10-13 23:17:00,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:00,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:17:00,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640080046] [2020-10-13 23:17:00,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:17:00,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:00,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:17:00,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:17:00,831 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 11 states. [2020-10-13 23:17:00,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:00,947 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2020-10-13 23:17:00,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:17:00,948 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-10-13 23:17:00,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:00,949 INFO L225 Difference]: With dead ends: 144 [2020-10-13 23:17:00,949 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 23:17:00,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:17:00,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 23:17:00,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 23:17:00,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 23:17:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 23:17:00,956 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-13 23:17:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:00,956 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 23:17:00,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:17:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 23:17:00,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 23:17:00,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:00,957 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 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] [2020-10-13 23:17:00,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:17:00,958 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:00,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:00,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1854459759, now seen corresponding path program 28 times [2020-10-13 23:17:00,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:00,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760490136] [2020-10-13 23:17:00,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:00,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:00,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:05,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:05,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 23:17:05,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:05,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 23:17:05,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:05,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:05,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:05,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 23:17:05,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:05,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:06,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:06,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:06,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:06,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:06,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:06,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:06,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:06,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:06,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:06,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:06,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:06,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:06,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:17:06,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:06,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:06,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 23:17:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:06,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:06,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:06,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:06,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:17:06,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:06,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:06,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:06,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:17:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:06,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:06,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:06,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:06,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 23:17:06,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:06,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:06,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1234 trivial. 0 not checked. [2020-10-13 23:17:06,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760490136] [2020-10-13 23:17:06,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:06,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:17:06,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38257485] [2020-10-13 23:17:06,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:17:06,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:06,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:17:06,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:17:06,223 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-13 23:17:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:06,363 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-13 23:17:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:17:06,363 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-13 23:17:06,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:06,364 INFO L225 Difference]: With dead ends: 119 [2020-10-13 23:17:06,364 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 23:17:06,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:17:06,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 23:17:06,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 23:17:06,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 23:17:06,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 23:17:06,370 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-13 23:17:06,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:06,371 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 23:17:06,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:17:06,371 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 23:17:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 23:17:06,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:06,372 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 12, 12, 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] [2020-10-13 23:17:06,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:17:06,372 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:06,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:06,373 INFO L82 PathProgramCache]: Analyzing trace with hash -2026033683, now seen corresponding path program 29 times [2020-10-13 23:17:06,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:06,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786837447] [2020-10-13 23:17:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:06,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:11,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:11,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 23:17:11,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:11,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:17:11,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:11,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:11,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:11,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 23:17:11,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:11,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:11,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:11,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:11,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:11,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:11,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:11,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:11,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:11,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:11,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:11,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:11,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:11,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:11,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:11,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:11,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:17:11,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:11,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:11,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 23:17:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:11,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:11,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:11,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:11,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:11,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:11,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:17:11,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:11,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:11,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:11,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:11,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:11,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:11,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:17:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:11,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:11,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:11,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:11,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:11,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:11,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 23:17:11,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:11,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:11,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1234 trivial. 0 not checked. [2020-10-13 23:17:11,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786837447] [2020-10-13 23:17:11,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:11,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:17:11,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456508663] [2020-10-13 23:17:11,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:17:11,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:11,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:17:11,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:17:11,670 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-13 23:17:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:11,812 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-10-13 23:17:11,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:17:11,813 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 138 [2020-10-13 23:17:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:11,814 INFO L225 Difference]: With dead ends: 121 [2020-10-13 23:17:11,814 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 23:17:11,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:17:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 23:17:11,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 23:17:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 23:17:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 23:17:11,820 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 138 [2020-10-13 23:17:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:11,820 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 23:17:11,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:17:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 23:17:11,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 23:17:11,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:11,821 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 13, 13, 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] [2020-10-13 23:17:11,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:17:11,822 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:11,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:11,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1146348779, now seen corresponding path program 30 times [2020-10-13 23:17:11,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:11,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48155843] [2020-10-13 23:17:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:11,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:11,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:11,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:16,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:16,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 23:17:16,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:16,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:17:16,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:16,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 23:17:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:16,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:16,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:16,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:16,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:16,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:16,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:16,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:17:16,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:16,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:16,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:16,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:16,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:16,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:16,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:16,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:16,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 23:17:16,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:16,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:16,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 23:17:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:16,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:16,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:16,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:16,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:16,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:17:16,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:16,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:16,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:17,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:17:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:17,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:17,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:17,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:17,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:17:17,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:17,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:17,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:17,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 268 proven. 389 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2020-10-13 23:17:17,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48155843] [2020-10-13 23:17:17,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:17,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:17:17,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465338039] [2020-10-13 23:17:17,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:17:17,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:17,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:17:17,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:17:17,100 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-13 23:17:17,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:17,398 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2020-10-13 23:17:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:17:17,398 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 140 [2020-10-13 23:17:17,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:17,399 INFO L225 Difference]: With dead ends: 153 [2020-10-13 23:17:17,399 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 23:17:17,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:17:17,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 23:17:17,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 23:17:17,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 23:17:17,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 23:17:17,406 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 140 [2020-10-13 23:17:17,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:17,406 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 23:17:17,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:17:17,407 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 23:17:17,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 23:17:17,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:17,408 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 13, 13, 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] [2020-10-13 23:17:17,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:17:17,408 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:17,408 INFO L82 PathProgramCache]: Analyzing trace with hash 797262697, now seen corresponding path program 31 times [2020-10-13 23:17:17,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:17,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450431812] [2020-10-13 23:17:17,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:17,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:22,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:22,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 23:17:22,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:22,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:17:22,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:22,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:22,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:22,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 23:17:22,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:22,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:22,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:22,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:22,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:22,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:22,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:22,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:22,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:22,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:22,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:22,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:22,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:22,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:22,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:22,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:22,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:22,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 23:17:22,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:22,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:22,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 23:17:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:22,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:22,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:22,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:22,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:22,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 23:17:22,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:22,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:22,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:22,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:22,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:22,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:17:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:22,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:22,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:22,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:22,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:22,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 23:17:22,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:22,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:17:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:22,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 316 proven. 460 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-13 23:17:22,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450431812] [2020-10-13 23:17:22,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:22,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:17:22,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793231366] [2020-10-13 23:17:22,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:17:22,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:22,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:17:22,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:17:22,704 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-13 23:17:23,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:23,008 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2020-10-13 23:17:23,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:17:23,009 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 146 [2020-10-13 23:17:23,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:23,010 INFO L225 Difference]: With dead ends: 157 [2020-10-13 23:17:23,010 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 23:17:23,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:17:23,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 23:17:23,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 23:17:23,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 23:17:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 23:17:23,018 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 146 [2020-10-13 23:17:23,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:23,018 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 23:17:23,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:17:23,018 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 23:17:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 23:17:23,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:23,020 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 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] [2020-10-13 23:17:23,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:17:23,020 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:23,020 INFO L82 PathProgramCache]: Analyzing trace with hash -662566041, now seen corresponding path program 32 times [2020-10-13 23:17:23,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:23,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471115335] [2020-10-13 23:17:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:23,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:28,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 23:17:28,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:28,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:17:28,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:28,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:28,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:17:28,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:28,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:17:28,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:28,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:28,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:28,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:28,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:28,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:28,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:28,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:28,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:28,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:28,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:28,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:28,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:28,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:28,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:28,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:28,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 23:17:28,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:28,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:17:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:28,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:28,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 23:17:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:28,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:28,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:28,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:28,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 23:17:28,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:28,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:17:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:28,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:28,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 23:17:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:28,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:28,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:28,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 23:17:28,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:28,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:17:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-13 23:17:28,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471115335] [2020-10-13 23:17:28,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:28,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:17:28,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688858215] [2020-10-13 23:17:28,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:17:28,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:28,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:17:28,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:17:28,290 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 12 states. [2020-10-13 23:17:28,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:28,391 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2020-10-13 23:17:28,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:17:28,392 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 152 [2020-10-13 23:17:28,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:28,393 INFO L225 Difference]: With dead ends: 162 [2020-10-13 23:17:28,393 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 23:17:28,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:17:28,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 23:17:28,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 23:17:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 23:17:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 23:17:28,402 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-13 23:17:28,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:28,403 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 23:17:28,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:17:28,403 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 23:17:28,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 23:17:28,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:28,404 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 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] [2020-10-13 23:17:28,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:17:28,404 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:28,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:28,405 INFO L82 PathProgramCache]: Analyzing trace with hash 2074577353, now seen corresponding path program 33 times [2020-10-13 23:17:28,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:28,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054391734] [2020-10-13 23:17:28,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:28,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:33,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:33,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 23:17:33,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:33,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 23:17:33,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:33,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:17:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 23:17:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:17:33,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:33,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:33,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:33,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:33,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:33,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:33,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:33,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:33,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:33,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:17:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:33,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:33,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:33,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:33,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:33,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:33,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 23:17:33,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:33,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:33,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:33,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 23:17:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:33,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:33,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:33,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:33,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 23:17:33,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:33,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:17:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:17:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:33,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 23:17:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:33,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:33,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:33,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:33,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:33,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:33,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 23:17:33,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:33,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:33,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:33,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:17:33,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:33,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:33,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 368 proven. 537 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2020-10-13 23:17:33,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054391734] [2020-10-13 23:17:33,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:33,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:17:33,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895993060] [2020-10-13 23:17:33,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:17:33,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:33,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:17:33,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:17:33,735 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-13 23:17:34,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:34,089 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-10-13 23:17:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:17:34,090 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-13 23:17:34,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:34,091 INFO L225 Difference]: With dead ends: 163 [2020-10-13 23:17:34,091 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 23:17:34,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:17:34,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 23:17:34,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 23:17:34,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 23:17:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 23:17:34,102 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-13 23:17:34,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:34,102 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 23:17:34,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:17:34,103 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 23:17:34,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 23:17:34,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:34,104 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 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] [2020-10-13 23:17:34,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:17:34,104 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:34,105 INFO L82 PathProgramCache]: Analyzing trace with hash 827214279, now seen corresponding path program 34 times [2020-10-13 23:17:34,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:34,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969318269] [2020-10-13 23:17:34,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:34,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:39,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 23:17:39,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 23:17:39,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:39,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:17:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 23:17:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:17:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:39,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:39,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:39,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:39,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:39,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:39,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:39,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:39,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:39,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:39,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:39,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:17:39,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:17:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:39,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:39,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:39,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:39,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 23:17:39,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:39,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:39,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:39,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:17:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:39,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:39,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:39,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:17:39,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:39,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:39,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:39,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:17:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:39,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:39,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:39,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:39,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:17:39,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:39,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:39,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:39,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:17:39,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:39,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1944 trivial. 0 not checked. [2020-10-13 23:17:39,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969318269] [2020-10-13 23:17:39,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:39,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:17:39,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737684462] [2020-10-13 23:17:39,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:17:39,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:39,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:17:39,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:17:39,445 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 17 states. [2020-10-13 23:17:39,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:39,615 INFO L93 Difference]: Finished difference Result 137 states and 142 transitions. [2020-10-13 23:17:39,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:17:39,616 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 160 [2020-10-13 23:17:39,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:39,617 INFO L225 Difference]: With dead ends: 137 [2020-10-13 23:17:39,618 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 23:17:39,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:17:39,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 23:17:39,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 23:17:39,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 23:17:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 23:17:39,624 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 160 [2020-10-13 23:17:39,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:39,625 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 23:17:39,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:17:39,625 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 23:17:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 23:17:39,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:39,626 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 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] [2020-10-13 23:17:39,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:17:39,627 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:39,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:39,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1535622587, now seen corresponding path program 35 times [2020-10-13 23:17:39,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:39,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172648596] [2020-10-13 23:17:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:39,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:44,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:44,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 23:17:44,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:44,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:17:44,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:44,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:17:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:17:44,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:44,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:44,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:44,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:44,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:44,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:44,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:44,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:44,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:44,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:44,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:44,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:44,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:44,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:17:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:44,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:44,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:44,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:44,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:44,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:17:44,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:44,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:17:44,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:44,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:44,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:17:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:44,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:44,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:44,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:44,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:44,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:44,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:17:44,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:44,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:17:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:44,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:44,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 23:17:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:44,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:44,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:44,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:44,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:44,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:44,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 23:17:44,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:44,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:17:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:44,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2140 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 23:17:44,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172648596] [2020-10-13 23:17:44,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:44,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:17:44,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532437116] [2020-10-13 23:17:44,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:17:44,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:44,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:17:44,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:17:44,894 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 13 states. [2020-10-13 23:17:44,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:44,981 INFO L93 Difference]: Finished difference Result 172 states and 180 transitions. [2020-10-13 23:17:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:17:44,981 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-10-13 23:17:44,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:44,982 INFO L225 Difference]: With dead ends: 172 [2020-10-13 23:17:44,982 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 23:17:44,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:17:44,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 23:17:44,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 23:17:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 23:17:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 23:17:44,989 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 162 [2020-10-13 23:17:44,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:44,989 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 23:17:44,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:17:44,989 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 23:17:44,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 23:17:44,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:44,990 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:44,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:17:44,991 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:44,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:44,991 INFO L82 PathProgramCache]: Analyzing trace with hash -320557529, now seen corresponding path program 36 times [2020-10-13 23:17:44,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:44,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329230206] [2020-10-13 23:17:44,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:45,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:45,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:45,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:45,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:50,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:50,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 23:17:50,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:50,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 23:17:50,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:50,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:17:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:17:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:17:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:50,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:50,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:50,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:50,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:50,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:50,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:50,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:17:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:50,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:50,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:50,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:50,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:50,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 23:17:50,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:50,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:17:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:17:50,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:50,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 23:17:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:50,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:50,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:50,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:50,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:50,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:50,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 23:17:50,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:50,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:50,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:50,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:17:50,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:50,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:50,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 23:17:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:50,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:50,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:50,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:17:50,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:50,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:17:50,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:50,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:50,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:50,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:17:50,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:50,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2159 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2020-10-13 23:17:50,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329230206] [2020-10-13 23:17:50,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:50,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:17:50,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582712584] [2020-10-13 23:17:50,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:17:50,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:50,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:17:50,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:17:50,329 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-13 23:17:50,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:50,719 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2020-10-13 23:17:50,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:17:50,720 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-10-13 23:17:50,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:50,721 INFO L225 Difference]: With dead ends: 173 [2020-10-13 23:17:50,721 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 23:17:50,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:17:50,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 23:17:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 23:17:50,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 23:17:50,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 23:17:50,727 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 164 [2020-10-13 23:17:50,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:50,728 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 23:17:50,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:17:50,728 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 23:17:50,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 23:17:50,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:50,729 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:50,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:17:50,729 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:50,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:50,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1082085029, now seen corresponding path program 37 times [2020-10-13 23:17:50,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:50,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421581367] [2020-10-13 23:17:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:50,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:50,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:50,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:51,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:55,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:55,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 23:17:55,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:55,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:17:55,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:55,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:17:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 23:17:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:17:55,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:55,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:55,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:55,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:55,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:55,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:55,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:55,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:55,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:17:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:55,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:55,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:55,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:17:55,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:55,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 23:17:55,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:55,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:55,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:55,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:55,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:55,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:55,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:17:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:55,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:55,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:56,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:56,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:17:56,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:56,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:17:56,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:56,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:56,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:56,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:56,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:56,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:56,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:17:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:56,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:56,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:56,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:56,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:17:56,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:56,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 23:17:56,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:56,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:56,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:56,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:17:56,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:56,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2426 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2020-10-13 23:17:56,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421581367] [2020-10-13 23:17:56,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:56,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:17:56,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909653164] [2020-10-13 23:17:56,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:17:56,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:56,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:17:56,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:17:56,117 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 18 states. [2020-10-13 23:17:56,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:56,205 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-13 23:17:56,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:17:56,205 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 170 [2020-10-13 23:17:56,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:56,207 INFO L225 Difference]: With dead ends: 145 [2020-10-13 23:17:56,207 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 23:17:56,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:17:56,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 23:17:56,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 23:17:56,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 23:17:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 23:17:56,214 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 170 [2020-10-13 23:17:56,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:56,214 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 23:17:56,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:17:56,214 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 23:17:56,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 23:17:56,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:56,216 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:56,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 23:17:56,216 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:56,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:56,216 INFO L82 PathProgramCache]: Analyzing trace with hash -763594845, now seen corresponding path program 38 times [2020-10-13 23:17:56,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:56,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037621470] [2020-10-13 23:17:56,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:56,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:56,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:56,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:01,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:01,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 23:18:01,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:01,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 23:18:01,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:01,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:01,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:18:01,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:01,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:18:01,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:01,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:01,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:01,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:01,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:01,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:01,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:01,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:01,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:01,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:01,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:01,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:18:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:01,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:01,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:01,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:01,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:01,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:01,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 23:18:01,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:01,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:01,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:01,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:18:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:01,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:01,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:01,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:01,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:01,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:01,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 23:18:01,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:01,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:01,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:01,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:01,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:01,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:18:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:01,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:01,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:01,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:01,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:01,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 23:18:01,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:01,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:01,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:01,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:01,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2455 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-13 23:18:01,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037621470] [2020-10-13 23:18:01,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:01,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:18:01,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255235828] [2020-10-13 23:18:01,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:18:01,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:01,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:18:01,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:18:01,532 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 14 states. [2020-10-13 23:18:01,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:01,628 INFO L93 Difference]: Finished difference Result 182 states and 190 transitions. [2020-10-13 23:18:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:18:01,628 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2020-10-13 23:18:01,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:01,630 INFO L225 Difference]: With dead ends: 182 [2020-10-13 23:18:01,630 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 23:18:01,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:18:01,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 23:18:01,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 23:18:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 23:18:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 23:18:01,637 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-13 23:18:01,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:01,637 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 23:18:01,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:18:01,637 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 23:18:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 23:18:01,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:01,638 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:01,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 23:18:01,639 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:01,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:01,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1937444603, now seen corresponding path program 39 times [2020-10-13 23:18:01,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:01,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522065784] [2020-10-13 23:18:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:01,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:01,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:01,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:01,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:06,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:06,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 23:18:06,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:06,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:18:06,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:06,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:06,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:18:06,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 23:18:06,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:18:06,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:06,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:06,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:06,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:06,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:06,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:06,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:06,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:06,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:06,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:18:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:06,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:06,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:06,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:06,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:06,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 23:18:06,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:06,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:18:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:18:06,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:06,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:18:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:06,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:06,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:06,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:06,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:06,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:06,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 23:18:06,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:06,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:06,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:06,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:06,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:06,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:06,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 23:18:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:07,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:07,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:07,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:07,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 23:18:07,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:07,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:07,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:07,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 0 proven. 1193 refuted. 0 times theorem prover too weak. 1283 trivial. 0 not checked. [2020-10-13 23:18:07,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522065784] [2020-10-13 23:18:07,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:07,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:18:07,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770086182] [2020-10-13 23:18:07,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:18:07,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:07,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:18:07,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:18:07,043 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-13 23:18:07,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:07,476 INFO L93 Difference]: Finished difference Result 183 states and 193 transitions. [2020-10-13 23:18:07,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:18:07,477 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 174 [2020-10-13 23:18:07,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:07,478 INFO L225 Difference]: With dead ends: 183 [2020-10-13 23:18:07,478 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 23:18:07,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:18:07,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 23:18:07,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 23:18:07,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 23:18:07,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 23:18:07,488 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 174 [2020-10-13 23:18:07,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:07,489 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 23:18:07,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:18:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 23:18:07,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 23:18:07,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:07,491 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 15, 15, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:07,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 23:18:07,491 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:07,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:07,492 INFO L82 PathProgramCache]: Analyzing trace with hash -784444925, now seen corresponding path program 40 times [2020-10-13 23:18:07,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:07,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356322236] [2020-10-13 23:18:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:07,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:07,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:08,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:12,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:12,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 23:18:12,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:12,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 23:18:12,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:12,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:12,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:18:12,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 23:18:12,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:18:12,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:12,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:12,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:12,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:12,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:12,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:12,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:12,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:12,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:12,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:12,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:18:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:12,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:12,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:12,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:12,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:18:12,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 23:18:12,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:12,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:12,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:12,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 23:18:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:12,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:12,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:12,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:18:12,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 23:18:12,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:12,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:18:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:18:12,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:12,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:18:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:12,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:12,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:12,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:12,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:18:12,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:12,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 23:18:12,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:12,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:18:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:12,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 548 proven. 804 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2020-10-13 23:18:12,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356322236] [2020-10-13 23:18:12,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:12,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:18:12,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868412977] [2020-10-13 23:18:12,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:18:12,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:12,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:18:12,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:18:12,926 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 20 states. [2020-10-13 23:18:13,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:13,377 INFO L93 Difference]: Finished difference Result 187 states and 197 transitions. [2020-10-13 23:18:13,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:18:13,378 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 180 [2020-10-13 23:18:13,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:13,379 INFO L225 Difference]: With dead ends: 187 [2020-10-13 23:18:13,379 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 23:18:13,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:18:13,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 23:18:13,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-13 23:18:13,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 23:18:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-13 23:18:13,385 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 180 [2020-10-13 23:18:13,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:13,386 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-13 23:18:13,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:18:13,386 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-13 23:18:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 23:18:13,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:13,387 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 15, 15, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:13,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 23:18:13,388 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:13,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:13,388 INFO L82 PathProgramCache]: Analyzing trace with hash -859489151, now seen corresponding path program 41 times [2020-10-13 23:18:13,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:13,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491666241] [2020-10-13 23:18:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:13,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:13,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:13,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:13,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:18,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:18,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-13 23:18:18,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:18,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:18:18,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:18,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:18:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 23:18:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:18:18,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:18,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:18,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:18,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:18,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:18,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:18,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:18:18,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:18,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:18,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:18,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:18:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:18,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:18,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:18,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:18,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:18,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:18,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 23:18:18,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:18,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:18,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:18,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 23:18:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:18,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:18,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:18,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:18,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:18,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:18,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 23:18:18,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:18,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:18,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:18,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:18,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:18,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:18,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 23:18:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:18,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:18,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:18,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:18,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:18,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 23:18:18,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:18,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:18:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:18,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3064 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2839 trivial. 0 not checked. [2020-10-13 23:18:18,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491666241] [2020-10-13 23:18:18,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:18,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:18:18,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047745514] [2020-10-13 23:18:18,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:18:18,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:18,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:18:18,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:18:18,821 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 19 states. [2020-10-13 23:18:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:18,978 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2020-10-13 23:18:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:18:18,979 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 186 [2020-10-13 23:18:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:18,980 INFO L225 Difference]: With dead ends: 157 [2020-10-13 23:18:18,980 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 23:18:18,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:18:18,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 23:18:18,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-13 23:18:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 23:18:18,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-13 23:18:18,986 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 186 [2020-10-13 23:18:18,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:18,986 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-13 23:18:18,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:18:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-13 23:18:18,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-13 23:18:18,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:18,988 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 16, 16, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:18,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 23:18:18,988 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:18,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:18,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1400095105, now seen corresponding path program 42 times [2020-10-13 23:18:18,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:18,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797526700] [2020-10-13 23:18:18,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:19,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:19,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:24,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:24,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-13 23:18:24,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:24,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:18:24,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:24,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:24,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:18:24,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 23:18:24,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:18:24,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:24,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:24,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:24,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:24,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:24,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:24,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:24,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:24,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:24,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:24,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:24,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:24,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:24,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:18:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:24,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:24,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:24,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:24,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:24,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 23:18:24,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:24,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:24,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:24,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 23:18:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:24,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:24,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:24,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:24,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:24,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:24,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 23:18:24,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:24,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:24,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:24,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 23:18:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:24,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:24,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:24,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:24,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 23:18:24,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:24,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:18:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:24,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3095 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 2839 trivial. 0 not checked. [2020-10-13 23:18:24,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797526700] [2020-10-13 23:18:24,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:24,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:18:24,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143000594] [2020-10-13 23:18:24,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:18:24,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:24,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:18:24,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:18:24,440 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 20 states. [2020-10-13 23:18:24,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:24,559 INFO L93 Difference]: Finished difference Result 159 states and 164 transitions. [2020-10-13 23:18:24,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:18:24,559 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 188 [2020-10-13 23:18:24,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:24,561 INFO L225 Difference]: With dead ends: 159 [2020-10-13 23:18:24,561 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 23:18:24,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:18:24,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 23:18:24,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-13 23:18:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 23:18:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-13 23:18:24,566 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 188 [2020-10-13 23:18:24,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:24,567 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-13 23:18:24,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:18:24,567 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-13 23:18:24,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-13 23:18:24,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:24,568 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 17, 17, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:24,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 23:18:24,569 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:24,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:24,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1231374083, now seen corresponding path program 43 times [2020-10-13 23:18:24,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:24,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416833468] [2020-10-13 23:18:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:24,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:24,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:25,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:29,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:29,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-13 23:18:29,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 23:18:29,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:29,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:18:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:18:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:29,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:29,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:29,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:29,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:29,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:29,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:29,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:29,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:29,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:29,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:18:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:29,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:29,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:29,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:29,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:29,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:29,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 23:18:29,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:29,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:18:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:29,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:29,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 23:18:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:29,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:29,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:29,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:29,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:29,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 23:18:29,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:29,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:29,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:29,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:18:29,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:29,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:29,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 23:18:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:29,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:29,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:29,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:29,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:29,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:29,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 23:18:29,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:29,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:18:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:29,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3128 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 3007 trivial. 0 not checked. [2020-10-13 23:18:30,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416833468] [2020-10-13 23:18:30,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:30,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:18:30,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533232566] [2020-10-13 23:18:30,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:18:30,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:30,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:18:30,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:18:30,022 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand 15 states. [2020-10-13 23:18:30,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:30,150 INFO L93 Difference]: Finished difference Result 200 states and 208 transitions. [2020-10-13 23:18:30,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:18:30,150 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 190 [2020-10-13 23:18:30,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:30,152 INFO L225 Difference]: With dead ends: 200 [2020-10-13 23:18:30,152 INFO L226 Difference]: Without dead ends: 116 [2020-10-13 23:18:30,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:18:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-13 23:18:30,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-13 23:18:30,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 23:18:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2020-10-13 23:18:30,157 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 190 [2020-10-13 23:18:30,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:30,158 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2020-10-13 23:18:30,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:18:30,158 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2020-10-13 23:18:30,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-13 23:18:30,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:30,159 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 17, 17, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:30,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 23:18:30,160 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:30,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:30,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1108368863, now seen corresponding path program 44 times [2020-10-13 23:18:30,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:30,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310344080] [2020-10-13 23:18:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:30,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:30,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:35,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:35,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-13 23:18:35,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:35,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 23:18:35,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:35,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:35,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 23:18:35,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-13 23:18:35,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 23:18:35,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:35,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:35,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:35,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:35,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:35,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:35,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:35,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:35,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:35,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:35,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 23:18:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:35,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:35,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:35,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:35,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:35,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:35,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 23:18:35,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:35,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:35,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:35,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:35,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:35,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 23:18:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:35,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:35,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:35,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:35,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:35,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:35,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 23:18:35,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:35,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:35,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:35,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:35,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:35,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:35,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-13 23:18:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:35,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:35,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:35,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:35,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:35,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 23:18:35,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:35,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:18:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:35,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2020-10-13 23:18:35,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310344080] [2020-10-13 23:18:35,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:35,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:18:35,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776057025] [2020-10-13 23:18:35,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:18:35,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:35,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:18:35,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:18:35,714 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand 21 states. [2020-10-13 23:18:35,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:35,814 INFO L93 Difference]: Finished difference Result 163 states and 168 transitions. [2020-10-13 23:18:35,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:18:35,815 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 192 [2020-10-13 23:18:35,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:35,816 INFO L225 Difference]: With dead ends: 163 [2020-10-13 23:18:35,816 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 23:18:35,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:18:35,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 23:18:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-13 23:18:35,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-13 23:18:35,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2020-10-13 23:18:35,822 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 192 [2020-10-13 23:18:35,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:35,822 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2020-10-13 23:18:35,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 23:18:35,823 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2020-10-13 23:18:35,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 23:18:35,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:35,824 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 18, 18, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:35,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 23:18:35,824 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:35,825 INFO L82 PathProgramCache]: Analyzing trace with hash -74153891, now seen corresponding path program 45 times [2020-10-13 23:18:35,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:35,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117138828] [2020-10-13 23:18:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:35,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:35,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:35,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking...