/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/mapsum4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:14:58,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:14:58,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:14:58,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:14:58,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:14:58,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:14:58,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:14:58,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:14:58,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:14:58,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:14:58,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:14:58,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:14:58,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:14:58,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:14:58,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:14:58,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:14:58,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:14:58,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:14:58,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:14:58,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:14:58,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:14:58,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:14:58,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:14:58,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:14:58,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:14:58,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:14:58,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:14:58,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:14:58,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:14:58,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:14:58,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:14:58,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:14:58,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:14:58,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:14:58,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:14:58,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:14:58,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:14:58,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:14:58,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:14:58,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:14:58,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:14:58,490 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 23:14:58,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:14:58,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:14:58,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:14:58,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:14:58,514 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:14:58,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:14:58,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:14:58,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:14:58,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:14:58,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:14:58,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:14:58,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:14:58,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:14:58,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:14:58,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:14:58,516 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:14:58,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:14:58,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:14:58,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:14:58,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:14:58,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:14:58,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:14:58,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:14:58,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:14:58,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:14:58,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:14:58,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:14:58,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:14:58,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:14:58,518 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 23:14:58,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:14:58,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:14:58,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:14:58,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:14:58,857 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:14:58,857 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum4.i [2020-10-13 23:14:58,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/961afccb2/ed2ce782aab94a75b01def4d13de9853/FLAGbc0b9333e [2020-10-13 23:14:59,360 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:14:59,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum4.i [2020-10-13 23:14:59,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/961afccb2/ed2ce782aab94a75b01def4d13de9853/FLAGbc0b9333e [2020-10-13 23:14:59,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/961afccb2/ed2ce782aab94a75b01def4d13de9853 [2020-10-13 23:14:59,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:14:59,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:14:59,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:14:59,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:14:59,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:14:59,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:14:59" (1/1) ... [2020-10-13 23:14:59,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445b6256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:59, skipping insertion in model container [2020-10-13 23:14:59,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:14:59" (1/1) ... [2020-10-13 23:14:59,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:14:59,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:14:59,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:15:00,005 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:15:00,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:15:00,041 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:15:00,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00 WrapperNode [2020-10-13 23:15:00,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:15:00,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:15:00,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:15:00,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:15:00,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (1/1) ... [2020-10-13 23:15:00,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (1/1) ... [2020-10-13 23:15:00,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (1/1) ... [2020-10-13 23:15:00,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (1/1) ... [2020-10-13 23:15:00,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (1/1) ... [2020-10-13 23:15:00,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (1/1) ... [2020-10-13 23:15:00,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (1/1) ... [2020-10-13 23:15:00,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:15:00,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:15:00,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:15:00,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:15:00,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (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 23:15:00,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:15:00,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:15:00,240 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-13 23:15:00,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:15:00,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:15:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:15:00,242 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-13 23:15:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:15:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:15:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:15:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:15:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:15:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:15:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:15:00,513 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:15:00,513 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:15:00,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:15:00 BoogieIcfgContainer [2020-10-13 23:15:00,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:15:00,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:15:00,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:15:00,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:15:00,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:14:59" (1/3) ... [2020-10-13 23:15:00,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a5c1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:15:00, skipping insertion in model container [2020-10-13 23:15:00,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (2/3) ... [2020-10-13 23:15:00,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a5c1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:15:00, skipping insertion in model container [2020-10-13 23:15:00,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:15:00" (3/3) ... [2020-10-13 23:15:00,526 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum4.i [2020-10-13 23:15:00,537 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:15:00,543 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:15:00,557 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:15:00,582 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:15:00,583 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:15:00,583 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:15:00,583 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:15:00,583 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:15:00,583 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:15:00,584 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:15:00,584 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:15:00,602 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 23:15:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:15:00,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:00,612 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 23:15:00,612 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:00,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:00,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-13 23:15:00,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:00,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055367839] [2020-10-13 23:15:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:00,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:00,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:00,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:01,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:01,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:02,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:15:02,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:15:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1334 [2020-10-13 23:15:02,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:02,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:02,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:02,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:15:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:02,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:15:02,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:02,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:02,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:02,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:02,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:15:02,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:02,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:02,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:15:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:02,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:02,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:15:02,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:02,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:15:02,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:02,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:02,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:02,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:02,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:02,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:15:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:02,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:02,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:15:02,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:02,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:15:02,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:02,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:02,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:02,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:02,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:02,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:02,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:15:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:02,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:02,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:15:02,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:02,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:15:02,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:02,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:15:02,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:02,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:02,238 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 23:15:02,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055367839] [2020-10-13 23:15:02,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:15:02,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:15:02,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946343437] [2020-10-13 23:15:02,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:15:02,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:02,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:15:02,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:15:02,271 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 23:15:02,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:02,402 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 23:15:02,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:15:02,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 23:15:02,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:02,414 INFO L225 Difference]: With dead ends: 54 [2020-10-13 23:15:02,415 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 23:15:02,420 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 23:15:02,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 23:15:02,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 23:15:02,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 23:15:02,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 23:15:02,464 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 23:15:02,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:02,465 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 23:15:02,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:15:02,465 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 23:15:02,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:15:02,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:02,468 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 23:15:02,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:15:02,469 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:02,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:02,469 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2020-10-13 23:15:02,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:02,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437631748] [2020-10-13 23:15:02,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:02,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:03,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:15:03,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:15:03,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-10-13 23:15:03,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:03,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:15:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 23:15:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:15:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:03,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:03,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:03,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:03,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:03,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:15:03,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:03,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:03,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:03,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:15:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:03,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:03,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:15:03,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:03,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:15:03,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:03,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:03,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:03,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:15:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:03,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:15:03,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:03,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:15:03,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:03,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:03,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:03,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:15:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:03,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:03,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:15:03,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:03,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 23:15:03,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:03,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:15:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:03,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:03,534 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 23:15:03,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437631748] [2020-10-13 23:15:03,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:15:03,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:15:03,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633116218] [2020-10-13 23:15:03,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:15:03,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:03,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:15:03,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:15:03,538 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 23:15:03,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:03,607 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-10-13 23:15:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:15:03,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 23:15:03,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:03,609 INFO L225 Difference]: With dead ends: 40 [2020-10-13 23:15:03,609 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 23:15:03,610 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 23:15:03,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 23:15:03,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 23:15:03,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 23:15:03,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 23:15:03,618 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 23:15:03,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:03,620 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 23:15:03,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:15:03,620 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 23:15:03,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 23:15:03,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:03,622 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:03,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:15:03,622 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:03,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:03,623 INFO L82 PathProgramCache]: Analyzing trace with hash -804317559, now seen corresponding path program 1 times [2020-10-13 23:15:03,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:03,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597027622] [2020-10-13 23:15:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:03,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:04,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:05,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:05,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 23:15:05,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:15:05,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-10-13 23:15:05,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:05,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:05,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:15:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:15:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:15:05,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:05,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:05,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:05,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:05,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:05,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:15:05,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:05,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:05,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:05,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:05,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:15:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:05,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:05,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:05,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:05,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:15:05,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:05,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:15:05,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:05,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:05,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:05,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:15:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:05,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:05,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:05,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:15:05,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:05,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:15:05,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:05,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:05,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:15:05,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:05,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:15:05,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:05,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:15:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:05,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:05,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:05,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:15:05,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:05,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 23:15:05,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:05,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:05,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:05,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:15:05,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:05,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 23:15:05,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597027622] [2020-10-13 23:15:05,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:05,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 23:15:05,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968413698] [2020-10-13 23:15:05,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:15:05,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:05,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:15:05,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:15:05,217 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 23:15:05,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:05,370 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-10-13 23:15:05,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:15:05,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-13 23:15:05,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:05,373 INFO L225 Difference]: With dead ends: 47 [2020-10-13 23:15:05,373 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 23:15:05,374 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 23:15:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 23:15:05,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 23:15:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 23:15:05,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 23:15:05,390 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-13 23:15:05,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:05,391 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 23:15:05,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:15:05,391 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 23:15:05,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 23:15:05,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:05,397 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 23:15:05,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:15:05,398 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:05,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:05,399 INFO L82 PathProgramCache]: Analyzing trace with hash -107343225, now seen corresponding path program 1 times [2020-10-13 23:15:05,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:05,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617572477] [2020-10-13 23:15:05,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:05,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:05,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:05,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:05,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:10,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:10,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 23:15:10,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:10,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4936 [2020-10-13 23:15:10,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:10,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:15:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:15:10,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:10,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:10,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:10,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:10,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:10,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:10,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:15:10,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:10,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:10,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 23:15:10,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:15:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:10,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:10,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:10,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:10,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:10,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:10,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:15:10,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:10,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:10,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:10,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:10,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:10,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:10,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 23:15:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:10,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:10,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:10,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:10,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:10,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:10,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 23:15:10,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:10,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:10,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:10,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:15:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:10,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:10,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:10,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:10,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:10,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:10,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:15:10,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:10,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:10,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:10,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:10,480 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 23:15:10,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617572477] [2020-10-13 23:15:10,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:15:10,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:15:10,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858049964] [2020-10-13 23:15:10,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:15:10,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:10,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:15:10,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:15:10,484 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 23:15:10,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:10,575 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 23:15:10,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:15:10,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 23:15:10,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:10,577 INFO L225 Difference]: With dead ends: 50 [2020-10-13 23:15:10,577 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 23:15:10,579 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 23:15:10,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 23:15:10,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 23:15:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 23:15:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 23:15:10,587 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 23:15:10,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:10,588 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 23:15:10,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:15:10,588 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 23:15:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 23:15:10,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:10,591 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 23:15:10,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:15:10,592 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:10,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:10,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668567, now seen corresponding path program 1 times [2020-10-13 23:15:10,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:10,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807028787] [2020-10-13 23:15:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:10,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:10,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:10,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:10,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:15,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:15,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 23:15:15,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:15,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:15:15,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:15,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:15,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:15,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:15:15,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:15,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:15,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:15,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:15,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:15,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:15,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:15:15,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:15,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:15,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:15,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:15,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:15,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:15,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:15,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:15,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:15,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:15:15,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:15,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:15,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:15,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:15:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:15,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:15,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:15,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:15,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:15,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 23:15:15,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:15,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:15,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:15,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:15,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 23:15:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:15,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:15,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:15,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:15,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:15,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:15,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:15,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:15,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:15,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:15:15,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807028787] [2020-10-13 23:15:15,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:15,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:15:15,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102369920] [2020-10-13 23:15:15,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:15:15,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:15,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:15:15,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:15,718 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 23:15:15,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:15,831 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-13 23:15:15,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:15:15,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 23:15:15,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:15,833 INFO L225 Difference]: With dead ends: 51 [2020-10-13 23:15:15,833 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 23:15:15,833 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 23:15:15,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 23:15:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 23:15:15,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 23:15:15,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 23:15:15,844 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 23:15:15,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:15,844 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 23:15:15,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:15:15,844 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 23:15:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 23:15:15,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:15,846 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:15,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:15:15,847 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:15,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:15,847 INFO L82 PathProgramCache]: Analyzing trace with hash 428974311, now seen corresponding path program 2 times [2020-10-13 23:15:15,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:15,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661300291] [2020-10-13 23:15:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:15,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:15,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:16,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:20,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:20,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 23:15:20,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:20,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:15:20,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:20,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 23:15:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:20,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:20,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:20,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:20,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:20,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:20,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:20,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:20,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:20,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:20,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:20,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:20,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:20,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:20,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:15:20,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:20,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:20,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:20,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:20,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:15:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:20,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:20,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:20,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:15:20,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:20,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:20,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:20,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:20,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:20,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 23:15:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:20,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:20,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:20,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:15:20,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:20,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:15:20,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:20,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-13 23:15:20,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661300291] [2020-10-13 23:15:20,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:20,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:15:20,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344038710] [2020-10-13 23:15:20,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:15:20,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:20,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:15:20,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:20,991 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-13 23:15:21,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:21,099 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-13 23:15:21,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:15:21,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-13 23:15:21,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:21,100 INFO L225 Difference]: With dead ends: 55 [2020-10-13 23:15:21,100 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 23:15:21,101 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 23:15:21,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 23:15:21,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 23:15:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 23:15:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 23:15:21,107 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-13 23:15:21,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:21,108 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 23:15:21,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:15:21,108 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 23:15:21,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 23:15:21,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:21,109 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:21,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:15:21,109 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:21,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:21,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1810554469, now seen corresponding path program 3 times [2020-10-13 23:15:21,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:21,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060908971] [2020-10-13 23:15:21,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:21,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:21,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:21,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:26,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:26,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 23:15:26,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:26,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:15:26,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:26,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:26,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:26,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 23:15:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:26,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:26,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:26,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:26,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:26,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:26,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:26,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:26,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:26,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:26,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:26,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:26,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:26,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:26,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:26,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:26,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:26,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:26,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:26,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:15:26,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:26,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:26,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:26,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 23:15:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:26,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:26,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:26,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:26,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:26,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:26,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:15:26,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:26,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:26,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:26,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 23:15:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:26,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:26,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:26,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:26,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:26,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:26,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:15:26,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:26,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:26,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 23:15:26,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060908971] [2020-10-13 23:15:26,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:26,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:15:26,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280810796] [2020-10-13 23:15:26,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:15:26,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:26,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:15:26,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:26,258 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 23:15:26,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:26,327 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-13 23:15:26,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:15:26,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-13 23:15:26,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:26,329 INFO L225 Difference]: With dead ends: 53 [2020-10-13 23:15:26,329 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 23:15:26,330 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 23:15:26,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 23:15:26,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 23:15:26,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 23:15:26,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 23:15:26,335 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 54 [2020-10-13 23:15:26,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:26,336 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 23:15:26,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:15:26,336 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 23:15:26,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 23:15:26,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:26,337 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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 23:15:26,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:15:26,338 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:26,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:26,338 INFO L82 PathProgramCache]: Analyzing trace with hash 591386467, now seen corresponding path program 4 times [2020-10-13 23:15:26,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:26,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35556444] [2020-10-13 23:15:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:26,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:26,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:26,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:26,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:27,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:31,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:31,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 23:15:31,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:31,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:15:31,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:31,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 23:15:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:15:31,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:31,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:31,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:31,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:31,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:31,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:31,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:31,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:31,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:31,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:31,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:31,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:31,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:31,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:31,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:31,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:31,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:31,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:31,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:15:31,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:31,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:31,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:31,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 23:15:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:31,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:31,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:31,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:31,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:31,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:31,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 23:15:31,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:31,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:31,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:31,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:31,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:15:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:31,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:31,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:31,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:31,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:31,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:31,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:15:31,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:31,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:31,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:31,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 23:15:31,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35556444] [2020-10-13 23:15:31,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:31,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:15:31,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943071312] [2020-10-13 23:15:31,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:15:31,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:31,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:15:31,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:31,503 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 23:15:31,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:31,602 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2020-10-13 23:15:31,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:15:31,602 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 23:15:31,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:31,603 INFO L225 Difference]: With dead ends: 55 [2020-10-13 23:15:31,603 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 23:15:31,604 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 23:15:31,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 23:15:31,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 23:15:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 23:15:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 23:15:31,609 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 56 [2020-10-13 23:15:31,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:31,610 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 23:15:31,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:15:31,610 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 23:15:31,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 23:15:31,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:31,611 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 23:15:31,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:15:31,611 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:31,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:31,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1497008353, now seen corresponding path program 5 times [2020-10-13 23:15:31,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:31,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217184479] [2020-10-13 23:15:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:31,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:31,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:36,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:36,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:36,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:15:36,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:36,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:15:36,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:36,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:36,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:36,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:36,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:36,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:36,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:36,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:36,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:36,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:36,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:36,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:36,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:36,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:36,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:36,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:36,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:36,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:36,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:36,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:36,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:36,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:36,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:36,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:15:36,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:36,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:36,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 23:15:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:36,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:36,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:36,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:36,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:36,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:36,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:15:36,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:36,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:36,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:36,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 23:15:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:36,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:36,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:36,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:36,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:36,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:36,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:15:36,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:36,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:36,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:36,743 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 23:15:36,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217184479] [2020-10-13 23:15:36,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:36,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:15:36,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512118247] [2020-10-13 23:15:36,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:15:36,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:36,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:15:36,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:36,745 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-10-13 23:15:36,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:36,812 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-13 23:15:36,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:15:36,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 23:15:36,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:36,814 INFO L225 Difference]: With dead ends: 68 [2020-10-13 23:15:36,814 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 23:15:36,815 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 23:15:36,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 23:15:36,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 23:15:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 23:15:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 23:15:36,820 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-13 23:15:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:36,820 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 23:15:36,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:15:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 23:15:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:15:36,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:36,822 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 23:15:36,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:15:36,822 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:36,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:36,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1355149629, now seen corresponding path program 6 times [2020-10-13 23:15:36,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:36,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682497019] [2020-10-13 23:15:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:36,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:36,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:36,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:41,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:41,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:41,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 23:15:41,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:41,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:15:41,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:41,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 23:15:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:41,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:41,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:41,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:41,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:41,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:41,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:41,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:41,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:41,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:41,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:41,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:15:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:41,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:41,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:41,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:41,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:15:41,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:41,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:41,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:41,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 23:15:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:41,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:41,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:41,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:41,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:41,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:41,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:15:41,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:41,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:41,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:41,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:41,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:41,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:41,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 23:15:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:41,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:41,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:41,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:41,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:41,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:15:41,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:41,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:41,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:41,969 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 23:15:41,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682497019] [2020-10-13 23:15:41,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:41,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:15:41,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477456372] [2020-10-13 23:15:41,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:15:41,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:41,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:15:41,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:41,971 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2020-10-13 23:15:42,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:42,090 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-10-13 23:15:42,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:15:42,091 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-10-13 23:15:42,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:42,092 INFO L225 Difference]: With dead ends: 69 [2020-10-13 23:15:42,092 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 23:15:42,093 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 23:15:42,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 23:15:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 23:15:42,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 23:15:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 23:15:42,098 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 23:15:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:42,098 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 23:15:42,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:15:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 23:15:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 23:15:42,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:42,099 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 23:15:42,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:15:42,100 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1343834815, now seen corresponding path program 7 times [2020-10-13 23:15:42,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:42,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468564269] [2020-10-13 23:15:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:42,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:42,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:42,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:42,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:47,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:47,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 23:15:47,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:47,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:15:47,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:47,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 23:15:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:47,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:47,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:47,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:47,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:47,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:47,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:47,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:47,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:47,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:47,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:15:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:47,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:47,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:47,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:47,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:47,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:47,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 23:15:47,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:47,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:47,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:47,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 23:15:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:47,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:47,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:47,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:47,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:47,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:47,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 23:15:47,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:47,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:47,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:47,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:47,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 23:15:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:47,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:47,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:47,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:47,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 23:15:47,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:47,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:47,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:47,299 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 23:15:47,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468564269] [2020-10-13 23:15:47,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:47,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:15:47,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381492578] [2020-10-13 23:15:47,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:15:47,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:47,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:15:47,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:47,302 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 23:15:47,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:47,378 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-13 23:15:47,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:15:47,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-13 23:15:47,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:47,379 INFO L225 Difference]: With dead ends: 63 [2020-10-13 23:15:47,380 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 23:15:47,380 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 23:15:47,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 23:15:47,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 23:15:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 23:15:47,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 23:15:47,385 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 66 [2020-10-13 23:15:47,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:47,385 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 23:15:47,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:15:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 23:15:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 23:15:47,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:47,387 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 23:15:47,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:15:47,387 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:47,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:47,387 INFO L82 PathProgramCache]: Analyzing trace with hash 905336639, now seen corresponding path program 8 times [2020-10-13 23:15:47,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:47,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119144810] [2020-10-13 23:15:47,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:47,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:47,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:47,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:52,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:52,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 23:15:52,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:52,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:15:52,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:52,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:52,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:52,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:52,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:52,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:52,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:52,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:52,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:52,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:52,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:52,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:52,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:52,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:52,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:52,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:52,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:15:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:52,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:52,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:52,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:52,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:52,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:52,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:15:52,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:52,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:52,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:52,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:52,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:52,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:52,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 23:15:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:52,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:52,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:52,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:52,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:52,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:15:52,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:52,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:52,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:15:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:52,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:52,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:52,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:52,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:52,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:52,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 23:15:52,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:52,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:52,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:52,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:52,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:52,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:52,518 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 23:15:52,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119144810] [2020-10-13 23:15:52,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:52,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:15:52,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881424044] [2020-10-13 23:15:52,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:15:52,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:52,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:15:52,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:52,520 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-10-13 23:15:52,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:52,594 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-10-13 23:15:52,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:15:52,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-13 23:15:52,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:52,595 INFO L225 Difference]: With dead ends: 78 [2020-10-13 23:15:52,595 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 23:15:52,596 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 23:15:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 23:15:52,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 23:15:52,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 23:15:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 23:15:52,601 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-13 23:15:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:52,601 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 23:15:52,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:15:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 23:15:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 23:15:52,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:52,602 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 23:15:52,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:15:52,602 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:52,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:52,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1678153055, now seen corresponding path program 9 times [2020-10-13 23:15:52,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:52,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226933135] [2020-10-13 23:15:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:52,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:52,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:52,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:57,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:57,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 23:15:57,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:57,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 23:15:57,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:57,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:57,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:15:57,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 23:15:57,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:15:57,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:57,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:57,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:57,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:57,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:57,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:57,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:57,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:57,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:57,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:57,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:15:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:57,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:57,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:57,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:57,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:15:57,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:57,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:57,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:15:57,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:57,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:15:57,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:57,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 23:15:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:57,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:57,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:57,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:57,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:57,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 23:15:57,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:57,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:57,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:57,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 23:15:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:57,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:57,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:57,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:57,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:57,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:57,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 23:15:57,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:57,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:57,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-13 23:15:57,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226933135] [2020-10-13 23:15:57,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:57,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:15:57,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119426871] [2020-10-13 23:15:57,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:15:57,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:57,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:15:57,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:15:57,783 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2020-10-13 23:15:57,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:57,928 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-10-13 23:15:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:15:57,928 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-13 23:15:57,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:57,929 INFO L225 Difference]: With dead ends: 79 [2020-10-13 23:15:57,930 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 23:15:57,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:15:57,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 23:15:57,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 23:15:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 23:15:57,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 23:15:57,936 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 23:15:57,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:57,936 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 23:15:57,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:15:57,936 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 23:15:57,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 23:15:57,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:57,937 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 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 23:15:57,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:15:57,937 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:57,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:57,938 INFO L82 PathProgramCache]: Analyzing trace with hash -684928609, now seen corresponding path program 10 times [2020-10-13 23:15:57,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:57,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727658477] [2020-10-13 23:15:57,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:57,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:57,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:57,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:57,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:02,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:02,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 23:16:02,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:02,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:16:02,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:02,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:16:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:16:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:16:02,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:02,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:02,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:02,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:02,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:02,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:02,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:02,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:02,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:02,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:02,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:02,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:02,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:02,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:16:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:02,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:02,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:03,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:03,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:16:03,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:03,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 23:16:03,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:03,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:03,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:03,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:16:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:03,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:03,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:16:03,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:03,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:16:03,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:03,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:16:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:16:03,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:03,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 23:16:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:03,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:03,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:03,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:03,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:16:03,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:03,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:16:03,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:03,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:03,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:03,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:16:03,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:03,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 64 proven. 89 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-13 23:16:03,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727658477] [2020-10-13 23:16:03,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:03,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:16:03,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950944678] [2020-10-13 23:16:03,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:16:03,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:03,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:16:03,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:03,122 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 9 states. [2020-10-13 23:16:03,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:03,300 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-10-13 23:16:03,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:16:03,301 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-13 23:16:03,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:03,302 INFO L225 Difference]: With dead ends: 83 [2020-10-13 23:16:03,302 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 23:16:03,303 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 23:16:03,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 23:16:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 23:16:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 23:16:03,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 23:16:03,308 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 76 [2020-10-13 23:16:03,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:03,309 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 23:16:03,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:16:03,309 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 23:16:03,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 23:16:03,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:03,310 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 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 23:16:03,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:16:03,310 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:03,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:03,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1276722659, now seen corresponding path program 11 times [2020-10-13 23:16:03,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:03,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084419572] [2020-10-13 23:16:03,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:03,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:03,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:03,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:03,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:08,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:08,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 23:16:08,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:08,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:16:08,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:08,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:08,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:16:08,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 23:16:08,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:16:08,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:08,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:08,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:08,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:08,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:08,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:08,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:08,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:08,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:08,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:08,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:08,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:08,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:08,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:16:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:08,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:08,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:08,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:08,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:08,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:08,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 23:16:08,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:08,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:08,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:08,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:08,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:08,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:08,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 23:16:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:08,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:08,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:08,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:08,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:08,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:08,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 23:16:08,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:08,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:08,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:08,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:08,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:08,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:08,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:16:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:08,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:08,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:08,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:08,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:08,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:08,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 23:16:08,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:08,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:08,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:08,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:08,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:08,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-13 23:16:08,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084419572] [2020-10-13 23:16:08,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:08,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:16:08,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267319] [2020-10-13 23:16:08,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:16:08,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:08,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:16:08,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:16:08,502 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 23:16:08,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:08,622 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-13 23:16:08,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:16:08,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-13 23:16:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:08,624 INFO L225 Difference]: With dead ends: 75 [2020-10-13 23:16:08,624 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 23:16:08,625 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 23:16:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 23:16:08,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 23:16:08,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 23:16:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 23:16:08,639 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 82 [2020-10-13 23:16:08,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:08,639 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 23:16:08,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:16:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 23:16:08,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 23:16:08,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:08,643 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 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 23:16:08,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:16:08,643 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:08,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:08,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1587774181, now seen corresponding path program 12 times [2020-10-13 23:16:08,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:08,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625122001] [2020-10-13 23:16:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:08,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:08,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:08,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:08,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:13,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:13,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 23:16:13,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:13,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:16:13,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:13,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:16:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 23:16:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:16:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:13,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:13,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:13,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:13,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:13,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:13,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:13,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:13,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:13,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:16:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:13,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:13,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:13,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:13,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:13,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:13,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 23:16:13,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:13,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:13,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:13,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:13,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:13,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:13,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 23:16:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:13,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:13,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:13,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:13,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:13,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:13,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 23:16:13,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:13,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:13,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:13,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:13,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:13,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:13,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 23:16:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:13,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:13,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:13,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:13,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:13,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 23:16:13,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:13,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:13,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-13 23:16:13,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625122001] [2020-10-13 23:16:13,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:13,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:16:13,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382116715] [2020-10-13 23:16:13,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:16:13,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:13,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:16:13,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:13,982 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-13 23:16:14,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:14,134 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-10-13 23:16:14,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:16:14,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-13 23:16:14,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:14,136 INFO L225 Difference]: With dead ends: 77 [2020-10-13 23:16:14,137 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 23:16:14,137 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 23:16:14,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 23:16:14,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 23:16:14,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 23:16:14,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 23:16:14,153 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 84 [2020-10-13 23:16:14,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:14,154 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 23:16:14,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:16:14,154 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 23:16:14,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 23:16:14,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:14,156 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 23:16:14,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:16:14,156 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:14,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:14,157 INFO L82 PathProgramCache]: Analyzing trace with hash 139423897, now seen corresponding path program 13 times [2020-10-13 23:16:14,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:14,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625908382] [2020-10-13 23:16:14,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:14,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:14,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:14,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:14,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:19,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:19,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 23:16:19,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:19,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:16:19,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:19,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:16:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:16:19,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:19,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:19,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:19,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:19,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:19,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:19,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:19,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:19,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:19,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:19,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:16:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:19,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:19,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:19,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:19,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:19,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:19,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 23:16:19,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:19,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:19,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:19,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:19,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:19,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 23:16:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:19,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:19,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:19,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:19,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:19,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:19,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 23:16:19,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:19,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:19,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:19,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 23:16:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:19,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:19,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:19,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:19,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:19,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 23:16:19,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:19,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:19,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:19,450 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 23:16:19,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625908382] [2020-10-13 23:16:19,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:19,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:16:19,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547585456] [2020-10-13 23:16:19,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:16:19,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:19,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:16:19,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:16:19,453 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-10-13 23:16:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:19,573 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-13 23:16:19,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:16:19,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-13 23:16:19,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:19,575 INFO L225 Difference]: With dead ends: 96 [2020-10-13 23:16:19,575 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 23:16:19,578 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 23:16:19,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 23:16:19,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 23:16:19,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 23:16:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 23:16:19,592 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-13 23:16:19,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:19,593 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 23:16:19,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:16:19,593 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 23:16:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 23:16:19,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:19,595 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 23:16:19,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:16:19,597 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:19,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:19,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1947021179, now seen corresponding path program 14 times [2020-10-13 23:16:19,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:19,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465272857] [2020-10-13 23:16:19,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:19,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:19,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:19,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:19,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:24,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:24,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 23:16:24,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:24,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 23:16:24,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:24,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:24,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:16:24,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 23:16:24,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:16:24,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:24,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:24,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:24,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:24,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:24,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:24,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:24,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:24,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:24,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:16:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:24,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:24,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:24,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:24,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:24,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 23:16:24,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:24,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:24,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 23:16:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:24,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:24,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:24,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:24,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:24,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:24,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 23:16:24,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:24,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:24,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:24,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:24,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:24,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:24,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:16:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:24,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:24,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:24,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:24,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:24,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:24,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 23:16:24,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:24,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:24,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:24,873 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 23:16:24,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465272857] [2020-10-13 23:16:24,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:24,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:16:24,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845061299] [2020-10-13 23:16:24,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:16:24,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:24,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:16:24,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:24,876 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 10 states. [2020-10-13 23:16:24,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:24,998 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-10-13 23:16:24,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:16:24,999 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-13 23:16:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:25,000 INFO L225 Difference]: With dead ends: 81 [2020-10-13 23:16:25,000 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 23:16:25,001 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 23:16:25,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 23:16:25,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 23:16:25,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 23:16:25,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 23:16:25,006 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-13 23:16:25,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:25,006 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 23:16:25,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:16:25,007 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 23:16:25,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 23:16:25,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:25,008 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 23:16:25,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:16:25,009 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:25,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:25,009 INFO L82 PathProgramCache]: Analyzing trace with hash -241366279, now seen corresponding path program 15 times [2020-10-13 23:16:25,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:25,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159744062] [2020-10-13 23:16:25,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:25,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:25,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:25,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:25,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:30,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:30,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 23:16:30,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:30,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:16:30,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:30,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:16:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 23:16:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:16:30,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:30,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:30,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:30,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:30,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:30,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:30,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:30,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:30,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:30,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:30,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:16:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:30,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:30,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:30,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:30,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:30,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:16:30,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:30,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:30,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:16:30,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:30,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:16:30,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:30,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 23:16:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:30,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:30,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:30,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:30,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:30,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:30,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:16:30,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:30,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:30,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:16:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:30,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:30,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:30,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:30,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:30,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 23:16:30,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:30,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:30,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-10-13 23:16:30,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159744062] [2020-10-13 23:16:30,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:30,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:16:30,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097552301] [2020-10-13 23:16:30,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:16:30,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:30,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:16:30,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:30,206 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-13 23:16:30,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:30,414 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-10-13 23:16:30,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:16:30,415 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-10-13 23:16:30,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:30,416 INFO L225 Difference]: With dead ends: 101 [2020-10-13 23:16:30,416 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 23:16:30,417 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 23:16:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 23:16:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 23:16:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 23:16:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 23:16:30,421 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 90 [2020-10-13 23:16:30,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:30,421 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 23:16:30,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:16:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 23:16:30,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 23:16:30,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:30,423 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 23:16:30,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:16:30,423 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:30,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:30,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1882123511, now seen corresponding path program 16 times [2020-10-13 23:16:30,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:30,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724312204] [2020-10-13 23:16:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:30,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:30,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:30,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:30,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:35,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:35,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 23:16:35,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:35,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:16:35,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:35,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:16:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:35,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:16:35,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:35,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:35,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:35,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:35,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:35,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:35,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:35,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:35,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:35,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:35,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:35,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:35,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:16:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:35,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:35,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:35,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:35,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:35,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 23:16:35,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:35,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:35,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:35,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:35,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:35,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:35,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 23:16:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:35,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:35,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:35,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:35,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:35,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:35,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:16:35,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:35,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:35,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:35,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:35,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:35,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:35,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:16:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:35,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:35,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:35,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:35,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:35,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 23:16:35,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:35,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:35,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:35,622 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 23:16:35,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724312204] [2020-10-13 23:16:35,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:35,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:16:35,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022094413] [2020-10-13 23:16:35,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:16:35,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:35,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:16:35,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:16:35,624 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 8 states. [2020-10-13 23:16:35,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:35,718 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2020-10-13 23:16:35,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:16:35,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-13 23:16:35,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:35,719 INFO L225 Difference]: With dead ends: 106 [2020-10-13 23:16:35,719 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 23:16:35,720 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 23:16:35,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 23:16:35,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 23:16:35,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 23:16:35,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 23:16:35,724 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-13 23:16:35,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:35,724 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 23:16:35,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:16:35,725 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 23:16:35,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 23:16:35,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:35,726 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 23:16:35,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:16:35,726 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:35,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:35,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1111292249, now seen corresponding path program 17 times [2020-10-13 23:16:35,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:35,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839158300] [2020-10-13 23:16:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:35,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:35,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:35,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:35,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:40,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:40,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 23:16:40,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:40,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:16:40,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:40,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:40,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:40,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 23:16:40,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:40,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:40,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:40,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:40,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:40,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:40,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:40,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:16:40,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:40,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:40,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:40,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:40,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:40,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:40,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:16:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:40,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:40,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:40,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:40,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 23:16:40,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:40,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:40,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:40,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:40,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:40,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:40,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 23:16:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:40,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:40,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:40,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:40,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:40,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 23:16:40,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:40,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:40,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:40,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:40,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:40,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:40,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 23:16:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:40,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:40,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:40,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:40,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:40,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:40,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 23:16:40,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:40,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:40,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:40,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:40,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:40,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-13 23:16:40,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839158300] [2020-10-13 23:16:40,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:40,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:16:40,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037898496] [2020-10-13 23:16:40,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:16:40,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:40,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:16:40,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:16:40,955 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-13 23:16:41,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:41,161 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-10-13 23:16:41,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:16:41,161 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-13 23:16:41,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:41,162 INFO L225 Difference]: With dead ends: 107 [2020-10-13 23:16:41,162 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 23:16:41,163 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 23:16:41,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 23:16:41,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 23:16:41,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 23:16:41,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 23:16:41,170 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-13 23:16:41,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:41,171 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 23:16:41,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:16:41,171 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 23:16:41,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 23:16:41,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:41,173 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 23:16:41,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:16:41,173 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:41,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:41,174 INFO L82 PathProgramCache]: Analyzing trace with hash 408802135, now seen corresponding path program 18 times [2020-10-13 23:16:41,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:41,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023503380] [2020-10-13 23:16:41,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:41,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:41,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:41,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:46,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:46,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 23:16:46,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:46,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:16:46,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:46,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 23:16:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:46,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:46,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:46,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:46,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:46,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:46,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:46,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:46,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:46,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:46,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:16:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:46,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:46,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:46,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:46,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 23:16:46,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:46,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:46,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:46,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:46,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:46,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:46,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:16:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:46,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:46,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:46,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:46,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:46,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:46,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 23:16:46,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:46,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:46,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:46,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:16:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:46,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:46,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:46,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:46,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:46,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:46,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:16:46,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:46,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:46,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:46,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:46,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:46,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:46,431 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 23:16:46,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023503380] [2020-10-13 23:16:46,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:46,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:16:46,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281007619] [2020-10-13 23:16:46,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:16:46,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:46,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:16:46,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:16:46,432 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-13 23:16:46,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:46,555 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-10-13 23:16:46,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:16:46,557 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-13 23:16:46,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:46,558 INFO L225 Difference]: With dead ends: 93 [2020-10-13 23:16:46,558 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 23:16:46,559 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 23:16:46,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 23:16:46,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 23:16:46,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 23:16:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 23:16:46,564 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 104 [2020-10-13 23:16:46,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:46,564 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 23:16:46,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:16:46,564 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 23:16:46,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 23:16:46,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:46,566 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 23:16:46,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:16:46,566 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:46,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:46,566 INFO L82 PathProgramCache]: Analyzing trace with hash -577108011, now seen corresponding path program 19 times [2020-10-13 23:16:46,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:46,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101673735] [2020-10-13 23:16:46,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:46,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:46,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:46,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:46,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:51,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:51,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 23:16:51,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:51,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 23:16:51,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:51,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:51,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:16:51,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:51,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:16:51,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:51,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:51,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:51,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:51,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:51,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:51,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:51,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:51,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:51,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:51,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:16:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:51,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:51,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:51,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:51,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:51,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:51,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:16:51,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:51,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:51,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:51,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:51,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:51,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:51,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:16:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:51,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:51,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:51,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:51,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:51,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:51,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 23:16:51,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:51,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:51,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:51,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:16:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:51,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:51,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:51,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:51,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:51,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 23:16:51,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:51,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:51,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:51,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:51,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:51,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:51,806 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 23:16:51,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101673735] [2020-10-13 23:16:51,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:51,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:16:51,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118334975] [2020-10-13 23:16:51,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:16:51,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:51,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:16:51,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:51,808 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 9 states. [2020-10-13 23:16:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:51,896 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-13 23:16:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:16:51,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-13 23:16:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:51,898 INFO L225 Difference]: With dead ends: 116 [2020-10-13 23:16:51,898 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 23:16:51,899 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 23:16:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 23:16:51,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 23:16:51,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 23:16:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 23:16:51,904 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-13 23:16:51,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:51,904 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 23:16:51,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:16:51,904 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 23:16:51,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 23:16:51,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:51,905 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 23:16:51,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:16:51,905 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:51,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:51,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1374322249, now seen corresponding path program 20 times [2020-10-13 23:16:51,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:51,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768111012] [2020-10-13 23:16:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:51,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:51,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:51,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:56,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:56,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 23:16:56,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 23:16:56,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:56,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:16:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-13 23:16:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:16:56,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:57,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:57,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:57,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:57,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:57,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:57,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:57,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:57,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:57,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:57,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:57,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:57,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:57,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:16:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:57,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:57,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:57,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:57,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:57,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:57,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 23:16:57,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:57,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:57,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:57,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 23:16:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:57,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:57,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:57,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:57,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:57,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:57,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 23:16:57,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:57,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:57,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:57,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:57,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:16:57,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 23:16:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:57,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:57,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:57,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:57,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:57,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 23:16:57,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:57,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:57,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:57,194 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 23:16:57,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768111012] [2020-10-13 23:16:57,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:57,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:16:57,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236194498] [2020-10-13 23:16:57,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:16:57,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:57,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:16:57,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:16:57,196 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-13 23:16:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:57,307 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-13 23:16:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:16:57,308 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-13 23:16:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:57,309 INFO L225 Difference]: With dead ends: 97 [2020-10-13 23:16:57,309 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 23:16:57,310 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 23:16:57,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 23:16:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 23:16:57,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 23:16:57,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 23:16:57,315 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-13 23:16:57,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:57,315 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 23:16:57,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:16:57,316 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 23:16:57,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 23:16:57,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:57,317 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 23:16:57,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:16:57,317 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:57,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:57,318 INFO L82 PathProgramCache]: Analyzing trace with hash -467689931, now seen corresponding path program 21 times [2020-10-13 23:16:57,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:57,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690152547] [2020-10-13 23:16:57,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:57,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:57,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:57,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:57,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:02,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:02,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 23:17:02,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:02,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 23:17:02,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:02,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:17:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-13 23:17:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:17:02,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:02,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:02,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:02,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:02,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:02,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:02,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:02,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:02,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:02,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:02,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:02,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:17:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:02,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:02,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:02,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:02,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:17:02,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:02,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 23:17:02,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:02,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:02,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:02,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:02,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:02,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:02,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 23:17:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:02,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:02,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:02,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:02,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:17:02,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 23:17:02,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:02,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:02,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:02,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 23:17:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:02,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:02,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:02,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:02,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:17:02,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:02,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 23:17:02,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:02,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:02,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:02,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:17:02,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:02,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:02,602 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 23:17:02,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690152547] [2020-10-13 23:17:02,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:02,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:17:02,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954402554] [2020-10-13 23:17:02,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:17:02,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:02,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:17:02,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:17:02,604 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-13 23:17:02,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:02,729 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-10-13 23:17:02,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:17:02,730 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 110 [2020-10-13 23:17:02,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:02,731 INFO L225 Difference]: With dead ends: 99 [2020-10-13 23:17:02,731 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 23:17:02,732 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 23:17:02,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 23:17:02,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 23:17:02,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 23:17:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 23:17:02,737 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-13 23:17:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:02,737 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 23:17:02,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:17:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 23:17:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 23:17:02,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:02,738 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 23:17:02,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:17:02,739 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:02,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:02,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1072393421, now seen corresponding path program 22 times [2020-10-13 23:17:02,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:02,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688841243] [2020-10-13 23:17:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:02,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:02,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:02,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:07,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 23:17:07,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:07,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 23:17:07,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:07,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:17:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 23:17:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:17:07,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:07,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:07,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:07,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:07,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:07,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:07,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:07,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:07,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:17:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:07,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:07,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:17:07,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:07,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:17:07,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:07,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:07,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:07,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:07,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:07,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:07,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 23:17:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:07,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:17:07,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:07,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 23:17:07,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:07,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:07,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:17:07,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:07,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:17:07,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:07,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:17:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:07,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:08,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:08,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:17:08,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:08,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 23:17:08,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:08,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:17:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 148 proven. 212 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2020-10-13 23:17:08,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688841243] [2020-10-13 23:17:08,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:08,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:17:08,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279985927] [2020-10-13 23:17:08,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:17:08,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:08,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:17:08,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:17:08,036 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 23:17:08,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:08,272 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2020-10-13 23:17:08,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:17:08,272 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 23:17:08,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:08,273 INFO L225 Difference]: With dead ends: 125 [2020-10-13 23:17:08,273 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 23:17:08,274 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 23:17:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 23:17:08,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 23:17:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 23:17:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 23:17:08,279 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-13 23:17:08,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:08,279 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 23:17:08,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:17:08,279 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 23:17:08,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 23:17:08,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:08,280 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 23:17:08,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:17:08,281 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:08,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:08,281 INFO L82 PathProgramCache]: Analyzing trace with hash 2003844785, now seen corresponding path program 23 times [2020-10-13 23:17:08,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:08,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110576592] [2020-10-13 23:17:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:08,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:08,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:08,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:13,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:13,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 23:17:13,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:13,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:17:13,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:13,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:17:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 23:17:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:17:13,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:13,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:13,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:13,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:13,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:13,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:13,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:13,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:13,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:13,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:13,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:17:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:13,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:13,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:13,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:17:13,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:13,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 23:17:13,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:13,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:13,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:17:13,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:13,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:17:13,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:13,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 23:17:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:13,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:13,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:13,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:13,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:17:13,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:13,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 23:17:13,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:13,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:17:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:13,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:13,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:17:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:13,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:13,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:13,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:13,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:17:13,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:13,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 23:17:13,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:13,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:13,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:17:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:13,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:13,573 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 23:17:13,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110576592] [2020-10-13 23:17:13,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:13,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:17:13,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409207930] [2020-10-13 23:17:13,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:17:13,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:13,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:17:13,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:17:13,574 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-13 23:17:13,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:13,827 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-10-13 23:17:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:17:13,828 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 118 [2020-10-13 23:17:13,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:13,829 INFO L225 Difference]: With dead ends: 129 [2020-10-13 23:17:13,829 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 23:17:13,830 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 23:17:13,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 23:17:13,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 23:17:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 23:17:13,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 23:17:13,835 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 118 [2020-10-13 23:17:13,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:13,836 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 23:17:13,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:17:13,836 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 23:17:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 23:17:13,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:13,837 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 23:17:13,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:17:13,837 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:13,838 INFO L82 PathProgramCache]: Analyzing trace with hash 695931823, now seen corresponding path program 24 times [2020-10-13 23:17:13,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:13,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776996160] [2020-10-13 23:17:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:13,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:13,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:13,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:18,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 23:17:18,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:18,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 23:17:18,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:18,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:17:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:17:18,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:18,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:18,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:18,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:18,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:18,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:18,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:18,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:18,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:18,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:18,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:17:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:18,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:18,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:18,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:18,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 23:17:18,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:18,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:18,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:18,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:17:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:18,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:19,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:19,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:19,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 23:17:19,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:19,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:19,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:17:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:19,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:19,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:19,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:19,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:19,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 23:17:19,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:19,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:19,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:19,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:19,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:19,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:19,143 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 23:17:19,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776996160] [2020-10-13 23:17:19,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:19,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:17:19,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121225528] [2020-10-13 23:17:19,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:17:19,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:19,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:17:19,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:17:19,144 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 10 states. [2020-10-13 23:17:19,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:19,228 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-13 23:17:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:17:19,228 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-13 23:17:19,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:19,229 INFO L225 Difference]: With dead ends: 134 [2020-10-13 23:17:19,229 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 23:17:19,230 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 23:17:19,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 23:17:19,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 23:17:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 23:17:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 23:17:19,240 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-13 23:17:19,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:19,241 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 23:17:19,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:17:19,241 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 23:17:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 23:17:19,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:19,243 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 23:17:19,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:17:19,243 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:19,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:19,244 INFO L82 PathProgramCache]: Analyzing trace with hash 164927761, now seen corresponding path program 25 times [2020-10-13 23:17:19,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:19,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561597923] [2020-10-13 23:17:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:19,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:19,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:19,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:24,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:24,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 23:17:24,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:24,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 23:17:24,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:24,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:17:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 23:17:24,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:17:24,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:24,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:24,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:24,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:24,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:24,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:24,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:24,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:24,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:24,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:24,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:17:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:24,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:24,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:24,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:24,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:24,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 23:17:24,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:24,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:24,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:24,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 23:17:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:24,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:24,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:24,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:24,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:17:24,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:24,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:17:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:17:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:24,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:17:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:24,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:24,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:24,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:24,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:24,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:24,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 23:17:24,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:24,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:24,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:24,616 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 23:17:24,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561597923] [2020-10-13 23:17:24,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:24,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:17:24,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421271364] [2020-10-13 23:17:24,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:17:24,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:24,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:17:24,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:17:24,618 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-13 23:17:24,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:24,884 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-10-13 23:17:24,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:17:24,884 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-13 23:17:24,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:24,885 INFO L225 Difference]: With dead ends: 135 [2020-10-13 23:17:24,885 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 23:17:24,886 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 23:17:24,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 23:17:24,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 23:17:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 23:17:24,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 23:17:24,891 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-13 23:17:24,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:24,892 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 23:17:24,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:17:24,892 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 23:17:24,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 23:17:24,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:24,893 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 23:17:24,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:17:24,893 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:24,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:24,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1086055951, now seen corresponding path program 26 times [2020-10-13 23:17:24,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:24,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780957253] [2020-10-13 23:17:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:24,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:24,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:24,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:29,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 23:17:29,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:29,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:17:29,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:29,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:29,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:17:29,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 23:17:29,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:17:29,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:30,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:30,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:30,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:30,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:30,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:30,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:30,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:30,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:30,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:30,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:30,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:30,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:30,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:17:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:30,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:30,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:30,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:30,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:30,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:30,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 23:17:30,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:30,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:30,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:30,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:30,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 23:17:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:30,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:30,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:30,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:30,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:30,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 23:17:30,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:30,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:30,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 23:17:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:30,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:30,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:30,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:30,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:30,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:30,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 23:17:30,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:30,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:30,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:30,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:30,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:30,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:30,303 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 23:17:30,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780957253] [2020-10-13 23:17:30,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:30,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:17:30,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819217658] [2020-10-13 23:17:30,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:17:30,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:30,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:17:30,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:17:30,305 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-13 23:17:30,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:30,446 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-13 23:17:30,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:17:30,446 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-13 23:17:30,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:30,447 INFO L225 Difference]: With dead ends: 115 [2020-10-13 23:17:30,447 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 23:17:30,448 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 23:17:30,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 23:17:30,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 23:17:30,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 23:17:30,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 23:17:30,456 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 132 [2020-10-13 23:17:30,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:30,456 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 23:17:30,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:17:30,457 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 23:17:30,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 23:17:30,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:30,458 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 23:17:30,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:17:30,459 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:30,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:30,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1727718259, now seen corresponding path program 27 times [2020-10-13 23:17:30,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:30,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780536853] [2020-10-13 23:17:30,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:30,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:30,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:30,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:35,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:35,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 23:17:35,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:35,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 23:17:35,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:35,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:35,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:17:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:17:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:17:35,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:35,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:35,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:35,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:35,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:35,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:35,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:35,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:35,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:17:35,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:17:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:35,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:35,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:35,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:35,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:35,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:35,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 23:17:35,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:35,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:35,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:35,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 23:17:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:35,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:35,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:35,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:35,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:35,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:35,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 23:17:35,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:35,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:35,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:17:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:35,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:35,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:35,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:35,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:35,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:35,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 23:17:35,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:35,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:35,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:35,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:35,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:35,958 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 23:17:35,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780536853] [2020-10-13 23:17:35,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:35,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:17:35,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206437954] [2020-10-13 23:17:35,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:17:35,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:35,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:17:35,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:17:35,959 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 11 states. [2020-10-13 23:17:36,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:36,075 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2020-10-13 23:17:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:17:36,076 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-10-13 23:17:36,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:36,077 INFO L225 Difference]: With dead ends: 144 [2020-10-13 23:17:36,077 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 23:17:36,078 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 23:17:36,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 23:17:36,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 23:17:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 23:17:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 23:17:36,086 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-13 23:17:36,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:36,086 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 23:17:36,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:17:36,086 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 23:17:36,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 23:17:36,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:36,088 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 23:17:36,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:17:36,088 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:36,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:36,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1854459759, now seen corresponding path program 28 times [2020-10-13 23:17:36,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:36,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471308045] [2020-10-13 23:17:36,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:36,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:36,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:36,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:36,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:41,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:41,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 23:17:41,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:41,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 23:17:41,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:41,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:41,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:41,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 23:17:41,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:41,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:41,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:41,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:41,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:41,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:41,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:41,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:41,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:41,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:41,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:41,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:41,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:41,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:41,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:41,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:41,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 23:17:41,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:41,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:41,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 23:17:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:41,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:41,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:41,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:41,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 23:17:41,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:41,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:41,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:41,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:17:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:41,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:41,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:41,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:41,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:41,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:41,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 23:17:41,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:41,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:41,518 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 23:17:41,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471308045] [2020-10-13 23:17:41,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:41,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:17:41,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456508663] [2020-10-13 23:17:41,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:17:41,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:41,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:17:41,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:17:41,520 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-13 23:17:41,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:41,623 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-13 23:17:41,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:17:41,624 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-13 23:17:41,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:41,625 INFO L225 Difference]: With dead ends: 119 [2020-10-13 23:17:41,625 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 23:17:41,625 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 23:17:41,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 23:17:41,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 23:17:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 23:17:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 23:17:41,631 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-13 23:17:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:41,631 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 23:17:41,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:17:41,631 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 23:17:41,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 23:17:41,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:41,632 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 23:17:41,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:17:41,633 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:41,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:41,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2026033683, now seen corresponding path program 29 times [2020-10-13 23:17:41,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:41,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840365285] [2020-10-13 23:17:41,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:41,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:41,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:41,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:41,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:46,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 23:17:46,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:46,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:17:46,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:46,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:46,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:46,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 23:17:46,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:46,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:46,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:46,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:46,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:46,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:46,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:46,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:46,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:46,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:46,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:46,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:46,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:46,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 23:17:46,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:46,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:46,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:46,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:46,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:46,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:46,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 23:17:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:46,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:46,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:46,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:46,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 23:17:46,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:46,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:46,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:46,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:46,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:46,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:46,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:17:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:46,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:47,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:47,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:47,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:47,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 23:17:47,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:47,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:47,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:47,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:47,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:47,090 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 23:17:47,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840365285] [2020-10-13 23:17:47,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:47,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:17:47,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637062135] [2020-10-13 23:17:47,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:17:47,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:47,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:17:47,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:17:47,092 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-13 23:17:47,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:47,253 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-10-13 23:17:47,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:17:47,253 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 138 [2020-10-13 23:17:47,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:47,254 INFO L225 Difference]: With dead ends: 121 [2020-10-13 23:17:47,254 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 23:17:47,255 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 23:17:47,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 23:17:47,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 23:17:47,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 23:17:47,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 23:17:47,259 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 138 [2020-10-13 23:17:47,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:47,260 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 23:17:47,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:17:47,260 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 23:17:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 23:17:47,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:47,264 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 23:17:47,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:17:47,264 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:47,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1146348779, now seen corresponding path program 30 times [2020-10-13 23:17:47,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:47,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474435199] [2020-10-13 23:17:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:47,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:47,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:47,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:47,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:52,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 23:17:52,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:52,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:17:52,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:52,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:52,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:52,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 23:17:52,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:52,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:52,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:52,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:52,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:52,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:52,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:52,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:52,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:52,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:52,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:52,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:52,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:52,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:52,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:52,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:52,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 23:17:52,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:52,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:52,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:52,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 23:17:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:52,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:52,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:52,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:52,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 23:17:52,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:52,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:52,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:52,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:17:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:52,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:52,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:52,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:52,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 23:17:52,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:52,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:52,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:52,711 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 23:17:52,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474435199] [2020-10-13 23:17:52,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:52,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:17:52,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807781989] [2020-10-13 23:17:52,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:17:52,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:52,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:17:52,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:17:52,712 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-13 23:17:53,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:53,023 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2020-10-13 23:17:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:17:53,023 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 140 [2020-10-13 23:17:53,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:53,025 INFO L225 Difference]: With dead ends: 153 [2020-10-13 23:17:53,025 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 23:17:53,026 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 23:17:53,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 23:17:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 23:17:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 23:17:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 23:17:53,030 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 140 [2020-10-13 23:17:53,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:53,031 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 23:17:53,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:17:53,031 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 23:17:53,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 23:17:53,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:53,032 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 23:17:53,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:17:53,032 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:53,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:53,033 INFO L82 PathProgramCache]: Analyzing trace with hash 797262697, now seen corresponding path program 31 times [2020-10-13 23:17:53,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:53,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932870391] [2020-10-13 23:17:53,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:53,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:53,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:53,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:53,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:58,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 23:17:58,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:58,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 23:17:58,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:58,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:58,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:58,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 23:17:58,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:58,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:58,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:58,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:58,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:58,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:58,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:58,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:58,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:58,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:58,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:58,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:58,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:58,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 23:17:58,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:58,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:58,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 23:17:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:58,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:58,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:58,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:58,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 23:17:58,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:58,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:58,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:58,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:58,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:58,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:58,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:17:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:58,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:58,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:58,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:58,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 23:17:58,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:58,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:17:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:58,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:58,497 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 23:17:58,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932870391] [2020-10-13 23:17:58,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:58,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:17:58,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653275496] [2020-10-13 23:17:58,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:17:58,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:58,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:17:58,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:17:58,499 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-13 23:17:58,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:58,842 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2020-10-13 23:17:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:17:58,842 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 146 [2020-10-13 23:17:58,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:58,843 INFO L225 Difference]: With dead ends: 157 [2020-10-13 23:17:58,844 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 23:17:58,845 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 23:17:58,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 23:17:58,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 23:17:58,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 23:17:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 23:17:58,850 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 146 [2020-10-13 23:17:58,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:58,850 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 23:17:58,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:17:58,851 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 23:17:58,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 23:17:58,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:58,852 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 23:17:58,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:17:58,852 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:58,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:58,853 INFO L82 PathProgramCache]: Analyzing trace with hash -662566041, now seen corresponding path program 32 times [2020-10-13 23:17:58,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:58,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165933135] [2020-10-13 23:17:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:03,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:03,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 23:18:03,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:03,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:18:03,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:03,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:03,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:18:03,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:03,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:18:03,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:03,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:03,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:03,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:03,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:03,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:03,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:03,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:03,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:03,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:03,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:18:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:03,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:04,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:04,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:04,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 23:18:04,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:04,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:04,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:04,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:18:04,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:04,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:04,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 23:18:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:04,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:04,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:04,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:04,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 23:18:04,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:04,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:18:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:04,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:04,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 23:18:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:04,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:04,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:04,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 23:18:04,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:04,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:18:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:04,280 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 23:18:04,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165933135] [2020-10-13 23:18:04,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:04,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:18:04,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177609875] [2020-10-13 23:18:04,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:18:04,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:04,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:18:04,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:18:04,281 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 12 states. [2020-10-13 23:18:04,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:04,394 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2020-10-13 23:18:04,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:18:04,394 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 152 [2020-10-13 23:18:04,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:04,395 INFO L225 Difference]: With dead ends: 162 [2020-10-13 23:18:04,396 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 23:18:04,396 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 23:18:04,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 23:18:04,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 23:18:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 23:18:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 23:18:04,402 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-13 23:18:04,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:04,402 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 23:18:04,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:18:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 23:18:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 23:18:04,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:04,403 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 23:18:04,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:18:04,404 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:04,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2074577353, now seen corresponding path program 33 times [2020-10-13 23:18:04,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:04,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840033094] [2020-10-13 23:18:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:04,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:09,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 23:18:09,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:09,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 23:18:09,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:09,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:09,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:18:09,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 23:18:09,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:18:09,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:09,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:09,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:09,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:09,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:18:09,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:09,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:09,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:09,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:18:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:09,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:09,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:09,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:09,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 23:18:09,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:09,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:18:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:18:09,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:09,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 23:18:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:09,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:09,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:09,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 23:18:09,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:09,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:18:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:09,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:09,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 23:18:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:09,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:09,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:09,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:09,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 23:18:09,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:09,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:18:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:09,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2020-10-13 23:18:09,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840033094] [2020-10-13 23:18:09,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:09,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:18:09,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671350804] [2020-10-13 23:18:09,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:18:09,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:09,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:18:09,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:18:09,941 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-13 23:18:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:10,315 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-10-13 23:18:10,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:18:10,315 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-13 23:18:10,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:10,317 INFO L225 Difference]: With dead ends: 163 [2020-10-13 23:18:10,317 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 23:18:10,318 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 23:18:10,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 23:18:10,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 23:18:10,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 23:18:10,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 23:18:10,325 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-13 23:18:10,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:10,325 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 23:18:10,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:18:10,326 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 23:18:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 23:18:10,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:10,327 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 23:18:10,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:18:10,327 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:10,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:10,327 INFO L82 PathProgramCache]: Analyzing trace with hash 827214279, now seen corresponding path program 34 times [2020-10-13 23:18:10,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:10,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85126948] [2020-10-13 23:18:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:10,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:15,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:15,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 23:18:15,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:15,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:18:15,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:15,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:15,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:18:15,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 23:18:15,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:18:15,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:15,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:15,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:15,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:15,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:15,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:15,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:15,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:15,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:15,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:15,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:18:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:15,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:15,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:15,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:15,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:15,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:15,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 23:18:15,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:15,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:15,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:15,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:15,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:15,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:18:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:15,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:15,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:15,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:15,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:15,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:15,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 23:18:15,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:15,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:15,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:15,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:18:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:15,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:15,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:15,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:15,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:15,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:15,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 23:18:15,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:15,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:15,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:15,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:15,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:15,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:15,911 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 23:18:15,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85126948] [2020-10-13 23:18:15,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:15,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:18:15,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278244390] [2020-10-13 23:18:15,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:18:15,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:15,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:18:15,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:18:15,913 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 17 states. [2020-10-13 23:18:16,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:16,016 INFO L93 Difference]: Finished difference Result 137 states and 142 transitions. [2020-10-13 23:18:16,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:18:16,016 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 160 [2020-10-13 23:18:16,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:16,017 INFO L225 Difference]: With dead ends: 137 [2020-10-13 23:18:16,018 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 23:18:16,018 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 23:18:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 23:18:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 23:18:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 23:18:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 23:18:16,023 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 160 [2020-10-13 23:18:16,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:16,024 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 23:18:16,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:18:16,024 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 23:18:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 23:18:16,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:16,025 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 23:18:16,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:18:16,025 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:16,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:16,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1535622587, now seen corresponding path program 35 times [2020-10-13 23:18:16,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:16,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185640217] [2020-10-13 23:18:16,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:16,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:21,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 23:18:21,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:21,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 23:18:21,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:21,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:18:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:18:21,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:21,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:21,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:21,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:21,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:21,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:21,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:21,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:21,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:21,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:18:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:21,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:21,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:21,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:21,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 23:18:21,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:21,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:21,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:21,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:18:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:21,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:21,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:21,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:21,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-13 23:18:21,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:21,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:21,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:21,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:21,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:21,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:21,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 23:18:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:21,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:21,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:21,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 23:18:21,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:21,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:21,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:21,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:21,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:21,637 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 23:18:21,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185640217] [2020-10-13 23:18:21,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:21,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:18:21,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470622709] [2020-10-13 23:18:21,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:18:21,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:21,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:18:21,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:18:21,639 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 13 states. [2020-10-13 23:18:21,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:21,760 INFO L93 Difference]: Finished difference Result 172 states and 180 transitions. [2020-10-13 23:18:21,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:18:21,760 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-10-13 23:18:21,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:21,761 INFO L225 Difference]: With dead ends: 172 [2020-10-13 23:18:21,761 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 23:18:21,761 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 23:18:21,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 23:18:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 23:18:21,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 23:18:21,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 23:18:21,766 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 162 [2020-10-13 23:18:21,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:21,766 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 23:18:21,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:18:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 23:18:21,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 23:18:21,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:21,767 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 23:18:21,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:18:21,767 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:21,768 INFO L82 PathProgramCache]: Analyzing trace with hash -320557529, now seen corresponding path program 36 times [2020-10-13 23:18:21,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:21,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527894604] [2020-10-13 23:18:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:26,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:26,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 23:18:26,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:26,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:18:26,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:26,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:26,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:18:26,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:18:26,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:18:26,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:26,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:26,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:26,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:26,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:26,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:26,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:26,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:18:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:26,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:26,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:26,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:26,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:26,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 23:18:26,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:26,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:26,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:18:26,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:26,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:18:26,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:27,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 23:18:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:27,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:27,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:27,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:27,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 23:18:27,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:27,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:27,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:27,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 23:18:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:27,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:27,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 23:18:27,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:27,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:27,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:27,303 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 23:18:27,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527894604] [2020-10-13 23:18:27,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:27,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:18:27,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101375911] [2020-10-13 23:18:27,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:18:27,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:27,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:18:27,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:18:27,305 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-13 23:18:27,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:27,708 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2020-10-13 23:18:27,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:18:27,708 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-10-13 23:18:27,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:27,709 INFO L225 Difference]: With dead ends: 173 [2020-10-13 23:18:27,709 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 23:18:27,710 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 23:18:27,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 23:18:27,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 23:18:27,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 23:18:27,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 23:18:27,715 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 164 [2020-10-13 23:18:27,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:27,715 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 23:18:27,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:18:27,715 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 23:18:27,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 23:18:27,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:27,717 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 23:18:27,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:18:27,717 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:27,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:27,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1082085029, now seen corresponding path program 37 times [2020-10-13 23:18:27,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:27,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415308929] [2020-10-13 23:18:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:27,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:32,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:32,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 23:18:32,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 23:18:32,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:32,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:18:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 23:18:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:18:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:32,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:32,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:32,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:32,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:32,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:32,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:32,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:32,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:32,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:32,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:18:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:32,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:33,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:33,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:33,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 23:18:33,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:33,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:33,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:33,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:18:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:33,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:33,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:33,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:33,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 23:18:33,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:33,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:33,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:33,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:18:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:33,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:33,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:33,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:33,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 23:18:33,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:33,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:33,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:33,395 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 23:18:33,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415308929] [2020-10-13 23:18:33,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:33,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:18:33,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062311189] [2020-10-13 23:18:33,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:18:33,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:33,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:18:33,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:18:33,397 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 18 states. [2020-10-13 23:18:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:33,551 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-13 23:18:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:18:33,552 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 170 [2020-10-13 23:18:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:33,553 INFO L225 Difference]: With dead ends: 145 [2020-10-13 23:18:33,553 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 23:18:33,554 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 23:18:33,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 23:18:33,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 23:18:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 23:18:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 23:18:33,559 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 170 [2020-10-13 23:18:33,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:33,559 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 23:18:33,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:18:33,560 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 23:18:33,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 23:18:33,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:33,561 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 23:18:33,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 23:18:33,561 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:33,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:33,562 INFO L82 PathProgramCache]: Analyzing trace with hash -763594845, now seen corresponding path program 38 times [2020-10-13 23:18:33,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:33,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137690460] [2020-10-13 23:18:33,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:33,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:38,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:38,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 23:18:38,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:38,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 23:18:38,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:38,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:38,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:18:38,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:38,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:18:38,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:38,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:38,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:38,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:38,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:38,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:18:38,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:38,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:38,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:18:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:38,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:38,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:38,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:39,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:39,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-13 23:18:39,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:39,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:39,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:18:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:39,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:39,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-13 23:18:39,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:39,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:39,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:18:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:39,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:39,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-13 23:18:39,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:39,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:39,447 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 23:18:39,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137690460] [2020-10-13 23:18:39,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:39,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:18:39,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982273075] [2020-10-13 23:18:39,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:18:39,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:39,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:18:39,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:18:39,449 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 14 states. [2020-10-13 23:18:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:39,535 INFO L93 Difference]: Finished difference Result 182 states and 190 transitions. [2020-10-13 23:18:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:18:39,535 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2020-10-13 23:18:39,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:39,536 INFO L225 Difference]: With dead ends: 182 [2020-10-13 23:18:39,536 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 23:18:39,537 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 23:18:39,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 23:18:39,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 23:18:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 23:18:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 23:18:39,542 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-13 23:18:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:39,542 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 23:18:39,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:18:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 23:18:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 23:18:39,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:39,543 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 23:18:39,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 23:18:39,544 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:39,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:39,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1937444603, now seen corresponding path program 39 times [2020-10-13 23:18:39,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:39,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909981311] [2020-10-13 23:18:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:44,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 23:18:44,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:44,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:18:44,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:44,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:44,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:18:44,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 23:18:44,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:18:44,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:44,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:44,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:44,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:44,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:44,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:44,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:44,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:44,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:44,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:18:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:44,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:44,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:44,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:44,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 23:18:44,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:44,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:18:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:18:44,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:44,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:18:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:44,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:44,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:45,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:45,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:45,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:45,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 23:18:45,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:45,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:45,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:45,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:45,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:45,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:45,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 23:18:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:45,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:45,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:45,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:45,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:45,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:45,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 23:18:45,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:45,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:45,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:45,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:45,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:45,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:45,233 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 23:18:45,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909981311] [2020-10-13 23:18:45,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:45,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:18:45,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457536794] [2020-10-13 23:18:45,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:18:45,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:45,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:18:45,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:18:45,235 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-13 23:18:45,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:45,644 INFO L93 Difference]: Finished difference Result 183 states and 193 transitions. [2020-10-13 23:18:45,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:18:45,644 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 174 [2020-10-13 23:18:45,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:45,646 INFO L225 Difference]: With dead ends: 183 [2020-10-13 23:18:45,646 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 23:18:45,647 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 23:18:45,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 23:18:45,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 23:18:45,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 23:18:45,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 23:18:45,653 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 174 [2020-10-13 23:18:45,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:45,653 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 23:18:45,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:18:45,653 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 23:18:45,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 23:18:45,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:45,655 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 23:18:45,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 23:18:45,655 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:45,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:45,655 INFO L82 PathProgramCache]: Analyzing trace with hash -784444925, now seen corresponding path program 40 times [2020-10-13 23:18:45,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:45,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146350622] [2020-10-13 23:18:45,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:45,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:45,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:45,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:45,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:50,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:50,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 23:18:50,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:50,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 23:18:50,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:50,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:18:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 23:18:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:18:50,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:50,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:50,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:50,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:50,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:50,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:50,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:50,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:50,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:50,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:18:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:50,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:50,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:50,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:50,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:18:50,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-13 23:18:50,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:50,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:50,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:50,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:50,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:50,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:50,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 23:18:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:51,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:51,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:18:51,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 23:18:51,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:51,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:18:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:18:51,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:51,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:18:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:51,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:51,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:51,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:18:51,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:51,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-13 23:18:51,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:51,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:18:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:51,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:51,469 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 23:18:51,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146350622] [2020-10-13 23:18:51,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:51,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:18:51,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091127825] [2020-10-13 23:18:51,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:18:51,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:51,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:18:51,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:18:51,471 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 20 states. [2020-10-13 23:18:51,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:51,999 INFO L93 Difference]: Finished difference Result 187 states and 197 transitions. [2020-10-13 23:18:52,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:18:52,000 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 180 [2020-10-13 23:18:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:52,001 INFO L225 Difference]: With dead ends: 187 [2020-10-13 23:18:52,001 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 23:18:52,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:18:52,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 23:18:52,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-13 23:18:52,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 23:18:52,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-13 23:18:52,008 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 180 [2020-10-13 23:18:52,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:52,008 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-13 23:18:52,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:18:52,009 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-13 23:18:52,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 23:18:52,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:52,010 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 23:18:52,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 23:18:52,010 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:52,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:52,011 INFO L82 PathProgramCache]: Analyzing trace with hash -859489151, now seen corresponding path program 41 times [2020-10-13 23:18:52,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:52,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451203032] [2020-10-13 23:18:52,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:52,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:57,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-13 23:18:57,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:57,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 23:18:57,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:57,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:57,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:18:57,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 23:18:57,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:18:57,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:57,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:57,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:57,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:57,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:57,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:57,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:57,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:57,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:57,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:57,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:57,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:57,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:18:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:57,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:57,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:57,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:57,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-13 23:18:57,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:57,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:57,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:57,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 23:18:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:57,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:57,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:57,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:57,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-13 23:18:57,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:57,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:57,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:57,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 23:18:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:57,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:57,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:18:57,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:57,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-13 23:18:57,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:57,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:57,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:57,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:18:57,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:57,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:57,895 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 23:18:57,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451203032] [2020-10-13 23:18:57,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:57,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:18:57,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183342287] [2020-10-13 23:18:57,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:18:57,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:57,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:18:57,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:18:57,896 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 19 states. [2020-10-13 23:18:58,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:58,074 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2020-10-13 23:18:58,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:18:58,075 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 186 [2020-10-13 23:18:58,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:58,076 INFO L225 Difference]: With dead ends: 157 [2020-10-13 23:18:58,076 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 23:18:58,077 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 23:18:58,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 23:18:58,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-13 23:18:58,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 23:18:58,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-13 23:18:58,083 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 186 [2020-10-13 23:18:58,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:58,083 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-13 23:18:58,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:18:58,083 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-13 23:18:58,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-13 23:18:58,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:58,085 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 23:18:58,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 23:18:58,085 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:58,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:58,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1400095105, now seen corresponding path program 42 times [2020-10-13 23:18:58,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:58,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082194029] [2020-10-13 23:18:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:58,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:58,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:58,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:58,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking...