/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:49:02,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:49:02,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:49:02,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:49:02,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:49:02,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:49:02,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:49:02,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:49:02,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:49:02,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:49:02,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:49:02,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:49:02,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:49:02,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:49:02,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:49:02,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:49:02,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:49:02,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:49:02,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:49:02,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:49:02,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:49:02,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:49:02,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:49:02,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:49:02,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:49:02,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:49:02,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:49:02,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:49:02,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:49:02,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:49:02,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:49:02,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:49:02,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:49:02,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:49:02,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:49:02,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:49:02,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:49:02,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:49:02,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:49:02,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:49:02,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:49:02,453 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 [2020-10-28 13:49:02,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:49:02,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:49:02,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:49:02,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:49:02,513 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:49:02,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:49:02,515 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:49:02,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:49:02,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:49:02,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:49:02,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:49:02,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:49:02,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:49:02,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:49:02,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:49:02,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:49:02,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:49:02,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:49:02,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:49:02,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:49:02,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:49:02,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:49:02,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:49:02,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:49:02,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:49:02,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:49:02,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:49:02,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:49:02,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:49:02,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:49:02,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:49:03,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:49:03,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:49:03,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:49:03,028 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:49:03,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label13.c [2020-10-28 13:49:03,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18153453b/9b4db611fa3347abb3cff6310ed01692/FLAG19099231c [2020-10-28 13:49:04,233 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:49:04,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label13.c [2020-10-28 13:49:04,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18153453b/9b4db611fa3347abb3cff6310ed01692/FLAG19099231c [2020-10-28 13:49:04,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18153453b/9b4db611fa3347abb3cff6310ed01692 [2020-10-28 13:49:04,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:49:04,711 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:49:04,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:49:04,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:49:04,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:49:04,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:49:04" (1/1) ... [2020-10-28 13:49:04,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd4ab53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:04, skipping insertion in model container [2020-10-28 13:49:04,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:49:04" (1/1) ... [2020-10-28 13:49:04,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:49:04,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:49:05,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:49:05,930 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:49:06,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:49:06,468 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:49:06,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:06 WrapperNode [2020-10-28 13:49:06,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:49:06,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:49:06,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:49:06,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:49:06,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:06" (1/1) ... [2020-10-28 13:49:06,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:06" (1/1) ... [2020-10-28 13:49:06,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:06" (1/1) ... [2020-10-28 13:49:06,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:06" (1/1) ... [2020-10-28 13:49:06,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:06" (1/1) ... [2020-10-28 13:49:06,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:06" (1/1) ... [2020-10-28 13:49:06,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:06" (1/1) ... [2020-10-28 13:49:06,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:49:06,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:49:06,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:49:06,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:49:06,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:06" (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 [2020-10-28 13:49:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:49:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:49:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:49:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:49:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:49:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:49:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:49:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:49:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:49:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:49:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:49:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:49:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:49:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:49:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:49:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:49:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:49:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:49:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:49:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:49:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:49:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:49:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:49:11,099 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:49:11,100 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:49:11,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:49:11 BoogieIcfgContainer [2020-10-28 13:49:11,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:49:11,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:49:11,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:49:11,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:49:11,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:49:04" (1/3) ... [2020-10-28 13:49:11,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a468697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:49:11, skipping insertion in model container [2020-10-28 13:49:11,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:06" (2/3) ... [2020-10-28 13:49:11,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a468697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:49:11, skipping insertion in model container [2020-10-28 13:49:11,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:49:11" (3/3) ... [2020-10-28 13:49:11,114 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label13.c [2020-10-28 13:49:11,127 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:49:11,133 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:49:11,148 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:49:11,184 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:49:11,185 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:49:11,185 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:49:11,185 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:49:11,185 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:49:11,185 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:49:11,185 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:49:11,185 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:49:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:49:11,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 13:49:11,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:49:11,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:49:11,242 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:49:11,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:49:11,258 INFO L82 PathProgramCache]: Analyzing trace with hash 420332632, now seen corresponding path program 1 times [2020-10-28 13:49:11,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:49:11,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112064062] [2020-10-28 13:49:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:49:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:11,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:12,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:12,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 13:49:12,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:12,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-28 13:49:12,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:12,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:12,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:49:12,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:49:12,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 13:49:12,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 13:49:12,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:49:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:12,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:12,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:12,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:49:12,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:12,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:49:12,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:12,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:49:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:49:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:49:12,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112064062] [2020-10-28 13:49:12,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:49:12,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:49:12,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069734468] [2020-10-28 13:49:12,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:49:12,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:49:12,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:49:12,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:49:12,336 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-28 13:49:25,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:49:25,779 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-28 13:49:25,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:49:25,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-28 13:49:25,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:49:25,822 INFO L225 Difference]: With dead ends: 2989 [2020-10-28 13:49:25,822 INFO L226 Difference]: Without dead ends: 2143 [2020-10-28 13:49:25,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:49:25,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-28 13:49:26,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-28 13:49:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-28 13:49:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3564 transitions. [2020-10-28 13:49:26,053 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3564 transitions. Word has length 52 [2020-10-28 13:49:26,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:49:26,055 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3564 transitions. [2020-10-28 13:49:26,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:49:26,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3564 transitions. [2020-10-28 13:49:26,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 13:49:26,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:49:26,072 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:49:26,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:49:26,073 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:49:26,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:49:26,075 INFO L82 PathProgramCache]: Analyzing trace with hash -2093294976, now seen corresponding path program 1 times [2020-10-28 13:49:26,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:49:26,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645333941] [2020-10-28 13:49:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:49:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:26,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:26,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:27,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:27,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 13:49:27,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:49:27,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-10-28 13:49:27,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:27,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:49:27,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:49:27,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:49:27,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:49:27,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:49:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:27,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:27,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:27,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:49:27,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:27,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:49:27,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:27,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:27,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:27,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:27,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:49:27,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:27,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:49:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:27,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:27,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:27,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:49:27,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:27,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:49:27,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:27,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:27,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:27,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:49:27,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:49:27,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:49:27,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645333941] [2020-10-28 13:49:27,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:49:27,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:49:27,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608786416] [2020-10-28 13:49:27,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:49:27,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:49:27,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:49:27,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:49:27,572 INFO L87 Difference]: Start difference. First operand 2136 states and 3564 transitions. Second operand 7 states. [2020-10-28 13:49:41,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:49:41,506 INFO L93 Difference]: Finished difference Result 6471 states and 10885 transitions. [2020-10-28 13:49:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:49:41,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-28 13:49:41,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:49:41,538 INFO L225 Difference]: With dead ends: 6471 [2020-10-28 13:49:41,539 INFO L226 Difference]: Without dead ends: 4341 [2020-10-28 13:49:41,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:49:41,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2020-10-28 13:49:41,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 3588. [2020-10-28 13:49:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3588 states. [2020-10-28 13:49:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 5289 transitions. [2020-10-28 13:49:41,680 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 5289 transitions. Word has length 122 [2020-10-28 13:49:41,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:49:41,681 INFO L481 AbstractCegarLoop]: Abstraction has 3588 states and 5289 transitions. [2020-10-28 13:49:41,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:49:41,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 5289 transitions. [2020-10-28 13:49:41,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 13:49:41,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:49:41,683 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:49:41,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:49:41,684 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:49:41,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:49:41,684 INFO L82 PathProgramCache]: Analyzing trace with hash -155140886, now seen corresponding path program 1 times [2020-10-28 13:49:41,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:49:41,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793469719] [2020-10-28 13:49:41,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:49:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:41,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:41,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:42,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:42,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:49:42,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:49:42,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 828 [2020-10-28 13:49:42,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:42,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:42,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:49:42,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:49:42,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:49:42,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:49:42,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:49:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:42,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:42,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:42,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:49:42,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:42,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:49:42,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:42,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:42,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:42,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:42,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:49:42,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:42,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:49:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:42,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:42,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:49:42,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:49:42,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:42,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:49:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:49:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:49:42,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793469719] [2020-10-28 13:49:42,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:49:42,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:49:42,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185244929] [2020-10-28 13:49:42,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:49:42,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:49:42,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:49:42,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:49:42,988 INFO L87 Difference]: Start difference. First operand 3588 states and 5289 transitions. Second operand 7 states. [2020-10-28 13:49:57,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:49:57,089 INFO L93 Difference]: Finished difference Result 8770 states and 13053 transitions. [2020-10-28 13:49:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:49:57,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-28 13:49:57,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:49:57,129 INFO L225 Difference]: With dead ends: 8770 [2020-10-28 13:49:57,129 INFO L226 Difference]: Without dead ends: 5188 [2020-10-28 13:49:57,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:49:57,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5188 states. [2020-10-28 13:49:57,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5188 to 5088. [2020-10-28 13:49:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5088 states. [2020-10-28 13:49:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5088 states to 5088 states and 7130 transitions. [2020-10-28 13:49:57,346 INFO L78 Accepts]: Start accepts. Automaton has 5088 states and 7130 transitions. Word has length 127 [2020-10-28 13:49:57,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:49:57,347 INFO L481 AbstractCegarLoop]: Abstraction has 5088 states and 7130 transitions. [2020-10-28 13:49:57,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:49:57,347 INFO L276 IsEmpty]: Start isEmpty. Operand 5088 states and 7130 transitions. [2020-10-28 13:49:57,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 13:49:57,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:49:57,349 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:49:57,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:49:57,350 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:49:57,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:49:57,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1858740222, now seen corresponding path program 1 times [2020-10-28 13:49:57,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:49:57,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443613428] [2020-10-28 13:49:57,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:49:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:57,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:57,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:58,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:58,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 13:49:58,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:49:58,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1371 [2020-10-28 13:49:58,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:58,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:49:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:49:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:49:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:58,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:49:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:58,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:58,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:58,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:49:58,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:49:58,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:58,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:49:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:58,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:49:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:58,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:59,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:59,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:49:59,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:59,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 13:49:59,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:59,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:59,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:59,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:49:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:49:59,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:49:59,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443613428] [2020-10-28 13:49:59,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:49:59,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:49:59,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677532007] [2020-10-28 13:49:59,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:49:59,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:49:59,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:49:59,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:49:59,391 INFO L87 Difference]: Start difference. First operand 5088 states and 7130 transitions. Second operand 7 states. [2020-10-28 13:50:15,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:50:15,766 INFO L93 Difference]: Finished difference Result 14621 states and 20757 transitions. [2020-10-28 13:50:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:50:15,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-28 13:50:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:50:15,819 INFO L225 Difference]: With dead ends: 14621 [2020-10-28 13:50:15,819 INFO L226 Difference]: Without dead ends: 9539 [2020-10-28 13:50:15,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:50:15,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9539 states. [2020-10-28 13:50:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9539 to 8086. [2020-10-28 13:50:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8086 states. [2020-10-28 13:50:16,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8086 states to 8086 states and 10627 transitions. [2020-10-28 13:50:16,137 INFO L78 Accepts]: Start accepts. Automaton has 8086 states and 10627 transitions. Word has length 149 [2020-10-28 13:50:16,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:50:16,139 INFO L481 AbstractCegarLoop]: Abstraction has 8086 states and 10627 transitions. [2020-10-28 13:50:16,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:50:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states and 10627 transitions. [2020-10-28 13:50:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-28 13:50:16,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:50:16,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:50:16,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:50:16,148 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:50:16,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:50:16,148 INFO L82 PathProgramCache]: Analyzing trace with hash -2084265704, now seen corresponding path program 1 times [2020-10-28 13:50:16,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:50:16,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702167490] [2020-10-28 13:50:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:50:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:16,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:16,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:17,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:17,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:50:17,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:50:17,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-10-28 13:50:17,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:17,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:50:17,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 13:50:17,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:17,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:50:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:17,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:17,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:17,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:50:17,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:17,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:50:17,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:17,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:17,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:17,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:50:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:17,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:17,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:17,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:50:17,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:17,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-28 13:50:17,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:17,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:50:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:50:17,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:50:17,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702167490] [2020-10-28 13:50:17,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:50:17,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:50:17,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470266726] [2020-10-28 13:50:17,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:50:17,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:50:17,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:50:17,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:50:17,735 INFO L87 Difference]: Start difference. First operand 8086 states and 10627 transitions. Second operand 5 states. [2020-10-28 13:50:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:50:31,547 INFO L93 Difference]: Finished difference Result 21205 states and 28836 transitions. [2020-10-28 13:50:31,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:50:31,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2020-10-28 13:50:31,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:50:31,603 INFO L225 Difference]: With dead ends: 21205 [2020-10-28 13:50:31,603 INFO L226 Difference]: Without dead ends: 13125 [2020-10-28 13:50:31,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:50:31,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13125 states. [2020-10-28 13:50:31,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13125 to 12409. [2020-10-28 13:50:31,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12409 states. [2020-10-28 13:50:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12409 states to 12409 states and 15880 transitions. [2020-10-28 13:50:31,962 INFO L78 Accepts]: Start accepts. Automaton has 12409 states and 15880 transitions. Word has length 238 [2020-10-28 13:50:31,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:50:31,963 INFO L481 AbstractCegarLoop]: Abstraction has 12409 states and 15880 transitions. [2020-10-28 13:50:31,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:50:31,963 INFO L276 IsEmpty]: Start isEmpty. Operand 12409 states and 15880 transitions. [2020-10-28 13:50:31,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-28 13:50:31,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:50:31,976 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:50:31,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:50:31,976 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:50:31,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:50:31,977 INFO L82 PathProgramCache]: Analyzing trace with hash -2106500818, now seen corresponding path program 1 times [2020-10-28 13:50:31,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:50:31,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151768268] [2020-10-28 13:50:31,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:50:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:33,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:34,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:36,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:36,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-28 13:50:36,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:50:36,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4733 [2020-10-28 13:50:36,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:36,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:36,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:50:36,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 13:50:36,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:36,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:50:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:36,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:36,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:36,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:50:36,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:36,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:50:36,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:36,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:37,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:50:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:37,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:37,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:50:37,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:37,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 13:50:37,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:37,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:37,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:50:37,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:37,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:50:37,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:37,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 13:50:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:37,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:37,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:37,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:50:37,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:37,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 13:50:37,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:37,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:50:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:50:37,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:37,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-28 13:50:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:37,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:37,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:37,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:50:37,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:37,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:50:37,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:37,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:37,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 13:50:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:37,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 255 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 13:50:38,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151768268] [2020-10-28 13:50:38,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:50:38,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:50:38,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083250819] [2020-10-28 13:50:38,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:50:38,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:50:38,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:50:38,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:50:38,486 INFO L87 Difference]: Start difference. First operand 12409 states and 15880 transitions. Second operand 8 states. [2020-10-28 13:51:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:51:02,863 INFO L93 Difference]: Finished difference Result 30572 states and 38043 transitions. [2020-10-28 13:51:02,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:51:02,866 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 433 [2020-10-28 13:51:02,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:51:02,913 INFO L225 Difference]: With dead ends: 30572 [2020-10-28 13:51:02,914 INFO L226 Difference]: Without dead ends: 14531 [2020-10-28 13:51:02,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:51:02,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14531 states. [2020-10-28 13:51:03,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14531 to 12355. [2020-10-28 13:51:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12355 states. [2020-10-28 13:51:03,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12355 states to 12355 states and 13246 transitions. [2020-10-28 13:51:03,261 INFO L78 Accepts]: Start accepts. Automaton has 12355 states and 13246 transitions. Word has length 433 [2020-10-28 13:51:03,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:51:03,262 INFO L481 AbstractCegarLoop]: Abstraction has 12355 states and 13246 transitions. [2020-10-28 13:51:03,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:51:03,265 INFO L276 IsEmpty]: Start isEmpty. Operand 12355 states and 13246 transitions. [2020-10-28 13:51:03,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-10-28 13:51:03,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:03,276 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:51:03,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:51:03,276 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:03,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:03,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1126538894, now seen corresponding path program 1 times [2020-10-28 13:51:03,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:03,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954741682] [2020-10-28 13:51:03,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:03,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:03,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:04,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:08,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:08,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-28 13:51:08,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:51:08,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 13:51:08,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:08,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:51:08,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:51:08,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:08,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:08,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:08,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:08,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:08,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:08,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:51:08,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:08,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:08,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:08,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:51:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:08,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:09,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:09,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:51:09,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:09,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-28 13:51:09,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:09,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:09,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:09,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:09,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:51:09,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:09,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:51:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:09,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:09,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:09,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:51:09,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:09,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:51:09,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:09,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:09,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:09,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:09,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:51:09,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:09,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:51:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:09,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:09,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:09,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:51:09,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:09,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 13:51:09,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:09,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:51:09,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:09,838 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:51:09,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954741682] [2020-10-28 13:51:09,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:51:09,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:51:09,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81058226] [2020-10-28 13:51:09,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:51:09,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:09,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:51:09,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:51:09,841 INFO L87 Difference]: Start difference. First operand 12355 states and 13246 transitions. Second operand 8 states. [2020-10-28 13:51:22,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:51:22,487 INFO L93 Difference]: Finished difference Result 29798 states and 32139 transitions. [2020-10-28 13:51:22,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:51:22,488 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 456 [2020-10-28 13:51:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:51:22,543 INFO L225 Difference]: With dead ends: 29798 [2020-10-28 13:51:22,544 INFO L226 Difference]: Without dead ends: 17449 [2020-10-28 13:51:22,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:51:22,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17449 states. [2020-10-28 13:51:23,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17449 to 17397. [2020-10-28 13:51:23,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17397 states. [2020-10-28 13:51:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17397 states to 17397 states and 18722 transitions. [2020-10-28 13:51:23,061 INFO L78 Accepts]: Start accepts. Automaton has 17397 states and 18722 transitions. Word has length 456 [2020-10-28 13:51:23,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:51:23,063 INFO L481 AbstractCegarLoop]: Abstraction has 17397 states and 18722 transitions. [2020-10-28 13:51:23,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:51:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 17397 states and 18722 transitions. [2020-10-28 13:51:23,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2020-10-28 13:51:23,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:23,079 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:51:23,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:51:23,079 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:23,080 INFO L82 PathProgramCache]: Analyzing trace with hash -2110670960, now seen corresponding path program 1 times [2020-10-28 13:51:23,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:23,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719400816] [2020-10-28 13:51:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:23,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:23,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:28,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:28,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-28 13:51:28,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:51:28,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 13:51:28,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:28,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:51:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:51:28,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:28,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:28,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:28,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:28,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:28,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:28,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:51:28,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:28,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:28,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:28,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:28,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:28,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:51:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:28,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:28,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:28,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:51:28,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:28,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-28 13:51:28,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:28,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:51:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:28,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:51:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:28,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:28,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:28,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:51:28,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:28,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:51:28,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:28,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:51:28,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:28,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:51:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:29,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:29,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:29,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 13:51:29,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:29,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 13:51:29,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:29,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:29,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:29,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:29,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 13:51:29,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:29,499 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:51:29,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719400816] [2020-10-28 13:51:29,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:51:29,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:51:29,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166902979] [2020-10-28 13:51:29,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:51:29,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:29,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:51:29,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:51:29,503 INFO L87 Difference]: Start difference. First operand 17397 states and 18722 transitions. Second operand 7 states. [2020-10-28 13:51:42,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:51:42,537 INFO L93 Difference]: Finished difference Result 42821 states and 46746 transitions. [2020-10-28 13:51:42,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:51:42,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 477 [2020-10-28 13:51:42,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:51:42,605 INFO L225 Difference]: With dead ends: 42821 [2020-10-28 13:51:42,605 INFO L226 Difference]: Without dead ends: 24711 [2020-10-28 13:51:42,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:51:42,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24711 states. [2020-10-28 13:51:43,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24711 to 24577. [2020-10-28 13:51:43,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24577 states. [2020-10-28 13:51:43,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24577 states to 24577 states and 26564 transitions. [2020-10-28 13:51:43,149 INFO L78 Accepts]: Start accepts. Automaton has 24577 states and 26564 transitions. Word has length 477 [2020-10-28 13:51:43,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:51:43,150 INFO L481 AbstractCegarLoop]: Abstraction has 24577 states and 26564 transitions. [2020-10-28 13:51:43,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:51:43,150 INFO L276 IsEmpty]: Start isEmpty. Operand 24577 states and 26564 transitions. [2020-10-28 13:51:43,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2020-10-28 13:51:43,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:43,167 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:51:43,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:51:43,167 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:43,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:43,168 INFO L82 PathProgramCache]: Analyzing trace with hash 593536292, now seen corresponding path program 1 times [2020-10-28 13:51:43,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:43,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794975110] [2020-10-28 13:51:43,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:43,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:43,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:43,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:48,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:48,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 617 [2020-10-28 13:51:48,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:51:48,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-28 13:51:48,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:48,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:48,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:48,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 464 [2020-10-28 13:51:48,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:51:48,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:48,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:48,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:48,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:48,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:48,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:48,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:51:48,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:48,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:48,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:48,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:48,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:48,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:48,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:51:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:48,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:48,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:48,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:51:48,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:48,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:51:48,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:48,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:48,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:48,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:48,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:48,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:48,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:51:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:48,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:48,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:48,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:51:48,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:48,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:51:48,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:48,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:48,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:48,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:48,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:51:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:49,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:49,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:49,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:51:49,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:49,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:51:49,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:49,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 13:51:49,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:49,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-28 13:51:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:49,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:49,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:49,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:51:49,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:49,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:51:49,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:49,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:49,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:49,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:49,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:51:49,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-28 13:51:49,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794975110] [2020-10-28 13:51:49,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:51:49,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:51:49,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860592415] [2020-10-28 13:51:49,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:51:49,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:49,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:51:49,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:51:49,747 INFO L87 Difference]: Start difference. First operand 24577 states and 26564 transitions. Second operand 7 states. [2020-10-28 13:51:59,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:51:59,941 INFO L93 Difference]: Finished difference Result 52760 states and 57311 transitions. [2020-10-28 13:51:59,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:51:59,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 599 [2020-10-28 13:51:59,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:00,019 INFO L225 Difference]: With dead ends: 52760 [2020-10-28 13:52:00,020 INFO L226 Difference]: Without dead ends: 28189 [2020-10-28 13:52:00,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:52:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28189 states. [2020-10-28 13:52:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28189 to 27417. [2020-10-28 13:52:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27417 states. [2020-10-28 13:52:00,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27417 states to 27417 states and 29751 transitions. [2020-10-28 13:52:00,735 INFO L78 Accepts]: Start accepts. Automaton has 27417 states and 29751 transitions. Word has length 599 [2020-10-28 13:52:00,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:00,736 INFO L481 AbstractCegarLoop]: Abstraction has 27417 states and 29751 transitions. [2020-10-28 13:52:00,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:52:00,737 INFO L276 IsEmpty]: Start isEmpty. Operand 27417 states and 29751 transitions. [2020-10-28 13:52:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2020-10-28 13:52:00,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:00,762 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:52:00,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:52:00,762 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:00,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:00,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1022246634, now seen corresponding path program 1 times [2020-10-28 13:52:00,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:00,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121550543] [2020-10-28 13:52:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:00,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:01,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:06,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:06,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 716 [2020-10-28 13:52:06,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:52:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-28 13:52:06,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:06,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 464 [2020-10-28 13:52:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:52:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:06,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:06,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:06,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:06,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:06,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:06,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:52:06,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:06,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:06,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:06,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:06,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:06,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:52:06,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:06,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:52:06,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:06,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:06,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:06,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:06,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:06,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:06,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:52:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:06,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:06,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:06,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:52:06,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:06,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:52:06,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:06,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:06,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:52:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:06,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:06,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:06,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:52:06,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:06,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:52:06,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:06,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 13:52:06,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:06,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-28 13:52:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:06,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:06,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:06,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:52:06,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:06,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:52:06,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:06,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:52:06,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:06,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2020-10-28 13:52:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:06,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:06,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:06,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 13:52:06,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:06,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:52:06,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:06,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-28 13:52:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:06,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:07,008 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 335 proven. 75 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2020-10-28 13:52:07,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121550543] [2020-10-28 13:52:07,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:52:07,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:52:07,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408980708] [2020-10-28 13:52:07,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:52:07,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:07,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:52:07,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:52:07,011 INFO L87 Difference]: Start difference. First operand 27417 states and 29751 transitions. Second operand 7 states. [2020-10-28 13:52:19,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:19,284 INFO L93 Difference]: Finished difference Result 61442 states and 67157 transitions. [2020-10-28 13:52:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:52:19,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 696 [2020-10-28 13:52:19,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:19,380 INFO L225 Difference]: With dead ends: 61442 [2020-10-28 13:52:19,380 INFO L226 Difference]: Without dead ends: 34031 [2020-10-28 13:52:19,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:52:19,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34031 states. [2020-10-28 13:52:20,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34031 to 31840. [2020-10-28 13:52:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31840 states. [2020-10-28 13:52:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31840 states to 31840 states and 34639 transitions. [2020-10-28 13:52:20,111 INFO L78 Accepts]: Start accepts. Automaton has 31840 states and 34639 transitions. Word has length 696 [2020-10-28 13:52:20,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:20,112 INFO L481 AbstractCegarLoop]: Abstraction has 31840 states and 34639 transitions. [2020-10-28 13:52:20,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:52:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 31840 states and 34639 transitions. [2020-10-28 13:52:20,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2020-10-28 13:52:20,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:20,125 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:52:20,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:52:20,125 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:20,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:20,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1830368370, now seen corresponding path program 1 times [2020-10-28 13:52:20,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:20,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997419071] [2020-10-28 13:52:20,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:20,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:20,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:21,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:25,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:25,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 730 [2020-10-28 13:52:25,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:52:25,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 13:52:25,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:25,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:25,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:25,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 577 [2020-10-28 13:52:25,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:52:25,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:25,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:25,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:25,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:25,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:25,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:25,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:52:25,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:25,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:25,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:25,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:25,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:26,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:26,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:52:26,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:26,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 13:52:26,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:26,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:26,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:26,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:26,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:26,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:26,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:52:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:26,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:26,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:26,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:52:26,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:52:26,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:26,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:26,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:26,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:52:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:26,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:26,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:26,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:52:26,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:26,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:52:26,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:26,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:26,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:26,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:26,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:26,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:26,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-28 13:52:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:26,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:26,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:26,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:52:26,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:26,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 13:52:26,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:26,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:26,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:26,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:26,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:52:26,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:26,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2020-10-28 13:52:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:26,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:26,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:52:26,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:26,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 13:52:26,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:26,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:26,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:26,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:26,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:52:26,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 468 proven. 2 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2020-10-28 13:52:27,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997419071] [2020-10-28 13:52:27,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:52:27,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:52:27,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393640148] [2020-10-28 13:52:27,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:52:27,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:27,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:52:27,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:52:27,033 INFO L87 Difference]: Start difference. First operand 31840 states and 34639 transitions. Second operand 8 states. [2020-10-28 13:52:32,733 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 72