/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem16_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:54:56,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:54:56,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:54:56,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:54:56,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:54:56,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:54:56,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:54:56,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:54:56,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:54:56,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:54:56,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:54:56,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:54:56,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:54:56,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:54:56,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:54:56,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:54:56,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:54:56,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:54:56,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:54:56,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:54:56,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:54:56,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:54:56,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:54:56,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:54:56,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:54:56,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:54:56,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:54:56,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:54:56,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:54:56,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:54:56,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:54:56,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:54:56,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:54:56,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:54:56,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:54:56,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:54:56,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:54:56,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:54:56,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:54:56,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:54:56,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:54:57,001 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 [2020-10-29 07:54:57,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:54:57,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:54:57,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:54:57,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:54:57,061 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:54:57,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:54:57,062 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:54:57,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:54:57,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:54:57,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:54:57,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:54:57,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:54:57,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:54:57,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:54:57,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:54:57,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:54:57,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:54:57,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:54:57,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:54:57,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:54:57,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:54:57,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:54:57,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:54:57,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:54:57,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:54:57,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:54:57,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:54:57,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:54:57,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:54:57,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:54:57,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:54:57,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:54:57,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:54:57,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:54:57,570 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:54:57,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label00.c [2020-10-29 07:54:57,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6e42e6d9/acc91c30991149bc9b7ddf26f44ee923/FLAG6c70471f2 [2020-10-29 07:54:58,625 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:54:58,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label00.c [2020-10-29 07:54:58,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6e42e6d9/acc91c30991149bc9b7ddf26f44ee923/FLAG6c70471f2 [2020-10-29 07:54:58,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6e42e6d9/acc91c30991149bc9b7ddf26f44ee923 [2020-10-29 07:54:58,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:54:58,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:54:58,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:54:58,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:54:58,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:54:58,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:54:58" (1/1) ... [2020-10-29 07:54:58,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b560c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:58, skipping insertion in model container [2020-10-29 07:54:58,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:54:58" (1/1) ... [2020-10-29 07:54:58,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:54:58,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:54:59,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:54:59,697 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:54:59,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:54:59,978 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:54:59,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:59 WrapperNode [2020-10-29 07:54:59,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:54:59,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:54:59,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:54:59,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:55:00,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:59" (1/1) ... [2020-10-29 07:55:00,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:59" (1/1) ... [2020-10-29 07:55:00,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:59" (1/1) ... [2020-10-29 07:55:00,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:59" (1/1) ... [2020-10-29 07:55:00,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:59" (1/1) ... [2020-10-29 07:55:00,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:59" (1/1) ... [2020-10-29 07:55:00,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:59" (1/1) ... [2020-10-29 07:55:00,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:55:00,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:55:00,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:55:00,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:55:00,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:59" (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 [2020-10-29 07:55:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:55:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:55:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:55:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:55:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:55:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:55:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:55:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:55:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:55:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:55:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:55:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:55:00,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:55:00,273 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:55:00,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:55:00,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:55:00,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:55:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:55:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:55:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:55:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:55:03,515 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:55:03,515 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:55:03,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:55:03 BoogieIcfgContainer [2020-10-29 07:55:03,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:55:03,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:55:03,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:55:03,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:55:03,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:54:58" (1/3) ... [2020-10-29 07:55:03,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6319b326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:55:03, skipping insertion in model container [2020-10-29 07:55:03,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:54:59" (2/3) ... [2020-10-29 07:55:03,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6319b326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:55:03, skipping insertion in model container [2020-10-29 07:55:03,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:55:03" (3/3) ... [2020-10-29 07:55:03,528 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label00.c [2020-10-29 07:55:03,543 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:55:03,549 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:55:03,564 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:55:03,598 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:55:03,599 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:55:03,599 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:55:03,599 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:55:03,599 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:55:03,599 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:55:03,599 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:55:03,600 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:55:03,629 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-29 07:55:03,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 07:55:03,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:03,638 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] [2020-10-29 07:55:03,638 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:03,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:03,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1378620796, now seen corresponding path program 1 times [2020-10-29 07:55:03,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:03,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355259729] [2020-10-29 07:55:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:03,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:04,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:04,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 07:55:04,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:04,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-10-29 07:55:04,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:04,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:55:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:55:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 07:55:04,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:55:04,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:04,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:04,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:04,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:04,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 07:55:04,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:04,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:55:04,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:55:04,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355259729] [2020-10-29 07:55:04,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:55:04,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:55:04,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766787981] [2020-10-29 07:55:04,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:55:04,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:04,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:55:04,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:55:04,744 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-29 07:55:04,918 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 07:55:12,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:12,113 INFO L93 Difference]: Finished difference Result 1520 states and 2853 transitions. [2020-10-29 07:55:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:55:12,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-29 07:55:12,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:12,142 INFO L225 Difference]: With dead ends: 1520 [2020-10-29 07:55:12,143 INFO L226 Difference]: Without dead ends: 1039 [2020-10-29 07:55:12,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:12,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-29 07:55:12,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-29 07:55:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-29 07:55:12,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1630 transitions. [2020-10-29 07:55:12,340 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1630 transitions. Word has length 28 [2020-10-29 07:55:12,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:12,341 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1630 transitions. [2020-10-29 07:55:12,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:55:12,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1630 transitions. [2020-10-29 07:55:12,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 07:55:12,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:12,353 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:55:12,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:55:12,354 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:12,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:12,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1385147254, now seen corresponding path program 1 times [2020-10-29 07:55:12,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:12,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995226021] [2020-10-29 07:55:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:12,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:13,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:13,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 07:55:13,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:13,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-10-29 07:55:13,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:13,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:13,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:55:13,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:55:13,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:55:13,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:55:13,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:13,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:13,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:13,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:13,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:13,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:55:13,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:13,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:55:13,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:13,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:13,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:13,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:13,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:55:13,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:13,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 07:55:13,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:13,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:13,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:13,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:13,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:55:13,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:55:14,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995226021] [2020-10-29 07:55:14,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:55:14,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:55:14,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103320005] [2020-10-29 07:55:14,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:14,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:14,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:14,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:14,049 INFO L87 Difference]: Start difference. First operand 1032 states and 1630 transitions. Second operand 7 states. [2020-10-29 07:55:19,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:19,102 INFO L93 Difference]: Finished difference Result 2433 states and 3779 transitions. [2020-10-29 07:55:19,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:55:19,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-29 07:55:19,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:19,115 INFO L225 Difference]: With dead ends: 2433 [2020-10-29 07:55:19,116 INFO L226 Difference]: Without dead ends: 1407 [2020-10-29 07:55:19,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:55:19,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2020-10-29 07:55:19,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1389. [2020-10-29 07:55:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1389 states. [2020-10-29 07:55:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 2058 transitions. [2020-10-29 07:55:19,214 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 2058 transitions. Word has length 103 [2020-10-29 07:55:19,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:19,215 INFO L481 AbstractCegarLoop]: Abstraction has 1389 states and 2058 transitions. [2020-10-29 07:55:19,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:19,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 2058 transitions. [2020-10-29 07:55:19,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 07:55:19,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:19,226 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:55:19,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:55:19,227 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:19,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:19,228 INFO L82 PathProgramCache]: Analyzing trace with hash 415464068, now seen corresponding path program 1 times [2020-10-29 07:55:19,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:19,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835234963] [2020-10-29 07:55:19,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:19,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:20,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:20,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:55:20,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:20,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-10-29 07:55:20,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:20,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:55:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:55:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:55:20,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:20,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:20,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:20,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:20,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:20,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:20,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:55:20,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:20,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:20,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:20,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:20,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:55:20,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:20,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:20,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:20,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:20,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:55:20,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:20,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 07:55:20,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:20,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:20,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:55:20,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:55:20,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835234963] [2020-10-29 07:55:20,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:55:20,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:55:20,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949055527] [2020-10-29 07:55:20,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:20,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:20,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:20,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:20,638 INFO L87 Difference]: Start difference. First operand 1389 states and 2058 transitions. Second operand 7 states. [2020-10-29 07:55:26,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:26,213 INFO L93 Difference]: Finished difference Result 4240 states and 6439 transitions. [2020-10-29 07:55:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:55:26,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-29 07:55:26,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:26,234 INFO L225 Difference]: With dead ends: 4240 [2020-10-29 07:55:26,234 INFO L226 Difference]: Without dead ends: 2857 [2020-10-29 07:55:26,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:55:26,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-29 07:55:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2799. [2020-10-29 07:55:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2799 states. [2020-10-29 07:55:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3746 transitions. [2020-10-29 07:55:26,348 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3746 transitions. Word has length 104 [2020-10-29 07:55:26,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:26,348 INFO L481 AbstractCegarLoop]: Abstraction has 2799 states and 3746 transitions. [2020-10-29 07:55:26,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:26,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3746 transitions. [2020-10-29 07:55:26,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 07:55:26,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:26,351 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:55:26,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:55:26,351 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:26,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:26,352 INFO L82 PathProgramCache]: Analyzing trace with hash -739757462, now seen corresponding path program 1 times [2020-10-29 07:55:26,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:26,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138467766] [2020-10-29 07:55:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:26,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:26,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:26,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 07:55:26,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:26,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-29 07:55:26,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:26,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:26,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:26,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 07:55:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 07:55:26,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:26,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:26,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:26,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:26,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:26,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:55:26,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:26,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:26,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:26,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:26,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:26,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:26,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:26,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:26,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:55:26,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:26,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 07:55:26,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:26,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:26,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:26,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:26,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:55:26,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:55:26,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138467766] [2020-10-29 07:55:26,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:26,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:55:26,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6589075] [2020-10-29 07:55:26,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:55:26,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:26,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:55:26,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:55:26,928 INFO L87 Difference]: Start difference. First operand 2799 states and 3746 transitions. Second operand 5 states. [2020-10-29 07:55:32,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:32,676 INFO L93 Difference]: Finished difference Result 7676 states and 10637 transitions. [2020-10-29 07:55:32,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:55:32,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-29 07:55:32,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:32,712 INFO L225 Difference]: With dead ends: 7676 [2020-10-29 07:55:32,712 INFO L226 Difference]: Without dead ends: 4883 [2020-10-29 07:55:32,721 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 [2020-10-29 07:55:32,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2020-10-29 07:55:32,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 4875. [2020-10-29 07:55:32,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4875 states. [2020-10-29 07:55:32,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 6343 transitions. [2020-10-29 07:55:32,885 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 6343 transitions. Word has length 119 [2020-10-29 07:55:32,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:32,886 INFO L481 AbstractCegarLoop]: Abstraction has 4875 states and 6343 transitions. [2020-10-29 07:55:32,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:55:32,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 6343 transitions. [2020-10-29 07:55:32,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-29 07:55:32,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:32,890 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:55:32,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:55:32,891 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:32,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:32,892 INFO L82 PathProgramCache]: Analyzing trace with hash 73961360, now seen corresponding path program 1 times [2020-10-29 07:55:32,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:32,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19305110] [2020-10-29 07:55:32,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:32,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:33,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:35,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:35,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-29 07:55:35,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:35,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2054 [2020-10-29 07:55:35,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:35,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:55:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:55:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 07:55:35,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:35,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:35,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:35,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:35,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:35,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:35,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:55:35,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:35,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:35,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:35,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:35,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:55:35,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:35,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:35,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:35,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:35,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 07:55:35,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:35,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-29 07:55:35,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:35,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 07:55:35,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:55:35,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19305110] [2020-10-29 07:55:35,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:55:35,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:55:35,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128012336] [2020-10-29 07:55:35,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:35,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:35,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:35,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:35,734 INFO L87 Difference]: Start difference. First operand 4875 states and 6343 transitions. Second operand 7 states. [2020-10-29 07:55:40,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:40,987 INFO L93 Difference]: Finished difference Result 10525 states and 13669 transitions. [2020-10-29 07:55:40,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:55:40,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-29 07:55:40,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:41,029 INFO L225 Difference]: With dead ends: 10525 [2020-10-29 07:55:41,030 INFO L226 Difference]: Without dead ends: 5656 [2020-10-29 07:55:41,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:55:41,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5656 states. [2020-10-29 07:55:41,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5656 to 5613. [2020-10-29 07:55:41,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5613 states. [2020-10-29 07:55:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5613 states to 5613 states and 7192 transitions. [2020-10-29 07:55:41,237 INFO L78 Accepts]: Start accepts. Automaton has 5613 states and 7192 transitions. Word has length 194 [2020-10-29 07:55:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:41,239 INFO L481 AbstractCegarLoop]: Abstraction has 5613 states and 7192 transitions. [2020-10-29 07:55:41,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 5613 states and 7192 transitions. [2020-10-29 07:55:41,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-29 07:55:41,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:41,247 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 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] [2020-10-29 07:55:41,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:55:41,247 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:41,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:41,248 INFO L82 PathProgramCache]: Analyzing trace with hash 768731766, now seen corresponding path program 1 times [2020-10-29 07:55:41,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:41,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767793662] [2020-10-29 07:55:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:41,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:41,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:41,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:43,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:46,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:46,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-29 07:55:46,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:55:46,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-29 07:55:46,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:46,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:55:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:55:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-29 07:55:46,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:46,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:46,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:46,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:46,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:46,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:46,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:55:46,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:46,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:46,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:46,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:46,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:55:46,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:46,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:46,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:46,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:46,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:55:46,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:46,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 07:55:46,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:46,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:55:46,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:46,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 07:55:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:46,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:47,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:47,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:55:47,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:47,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-29 07:55:47,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:47,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 07:55:47,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:47,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-29 07:55:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:47,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:47,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:47,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:55:47,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:47,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:55:47,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:47,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 07:55:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 149 proven. 74 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 07:55:47,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767793662] [2020-10-29 07:55:47,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:47,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:55:47,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865557714] [2020-10-29 07:55:47,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:47,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:47,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:47,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:47,394 INFO L87 Difference]: Start difference. First operand 5613 states and 7192 transitions. Second operand 7 states. [2020-10-29 07:55:53,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:53,502 INFO L93 Difference]: Finished difference Result 12984 states and 17454 transitions. [2020-10-29 07:55:53,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:55:53,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 339 [2020-10-29 07:55:53,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:53,555 INFO L225 Difference]: With dead ends: 12984 [2020-10-29 07:55:53,555 INFO L226 Difference]: Without dead ends: 8053 [2020-10-29 07:55:53,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:55:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8053 states. [2020-10-29 07:55:53,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8053 to 6661. [2020-10-29 07:55:53,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6661 states. [2020-10-29 07:55:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 8479 transitions. [2020-10-29 07:55:53,812 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 8479 transitions. Word has length 339 [2020-10-29 07:55:53,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:53,813 INFO L481 AbstractCegarLoop]: Abstraction has 6661 states and 8479 transitions. [2020-10-29 07:55:53,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 8479 transitions. [2020-10-29 07:55:53,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-29 07:55:53,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:53,823 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 07:55:53,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:55:53,824 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:53,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:53,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1575464148, now seen corresponding path program 1 times [2020-10-29 07:55:53,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:53,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047666213] [2020-10-29 07:55:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:53,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:54,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:56,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:56,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-29 07:55:56,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:56,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2678 [2020-10-29 07:55:56,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:56,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:56,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:56,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-29 07:55:56,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 07:55:56,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:56,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:56,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:56,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:56,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:56,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:55:56,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:56,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:56,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:57,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:57,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:57,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:55:57,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-29 07:55:57,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:57,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:57,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:57,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:57,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 07:55:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:57,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 07:55:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:57,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:57,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:57,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 07:55:57,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:57,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-29 07:55:57,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:57,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:57,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:57,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:57,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:55:57,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:55:58,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047666213] [2020-10-29 07:55:58,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:58,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:55:58,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142674519] [2020-10-29 07:55:58,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:55:58,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:58,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:55:58,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:55:58,158 INFO L87 Difference]: Start difference. First operand 6661 states and 8479 transitions. Second operand 8 states. [2020-10-29 07:56:01,917 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-29 07:56:07,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:07,793 INFO L93 Difference]: Finished difference Result 16109 states and 21579 transitions. [2020-10-29 07:56:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:56:07,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 390 [2020-10-29 07:56:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:07,926 INFO L225 Difference]: With dead ends: 16109 [2020-10-29 07:56:07,927 INFO L226 Difference]: Without dead ends: 10130 [2020-10-29 07:56:07,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:56:07,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10130 states. [2020-10-29 07:56:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10130 to 10107. [2020-10-29 07:56:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10107 states. [2020-10-29 07:56:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10107 states to 10107 states and 12633 transitions. [2020-10-29 07:56:08,231 INFO L78 Accepts]: Start accepts. Automaton has 10107 states and 12633 transitions. Word has length 390 [2020-10-29 07:56:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:08,232 INFO L481 AbstractCegarLoop]: Abstraction has 10107 states and 12633 transitions. [2020-10-29 07:56:08,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:56:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 10107 states and 12633 transitions. [2020-10-29 07:56:08,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-29 07:56:08,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:08,244 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 07:56:08,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:56:08,245 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:08,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:08,246 INFO L82 PathProgramCache]: Analyzing trace with hash 859183166, now seen corresponding path program 1 times [2020-10-29 07:56:08,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:08,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138622553] [2020-10-29 07:56:08,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:08,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:08,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:08,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:13,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:13,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-29 07:56:13,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:56:13,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 07:56:13,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:13,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:13,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:56:13,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:56:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 421 [2020-10-29 07:56:13,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:13,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:13,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:13,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:13,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:13,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:13,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:56:13,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:13,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:13,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:56:13,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:13,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:13,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:13,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:14,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:14,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 07:56:14,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:56:14,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-29 07:56:14,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:14,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:14,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:14,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:14,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-29 07:56:14,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:56:14,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 07:56:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:14,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:14,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:14,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 07:56:14,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:14,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-29 07:56:14,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:14,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:14,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 07:56:14,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:56:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:56:15,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138622553] [2020-10-29 07:56:15,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:15,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:56:15,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729561348] [2020-10-29 07:56:15,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:56:15,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:15,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:56:15,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:56:15,442 INFO L87 Difference]: Start difference. First operand 10107 states and 12633 transitions. Second operand 7 states. [2020-10-29 07:56:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:20,685 INFO L93 Difference]: Finished difference Result 19546 states and 24587 transitions. [2020-10-29 07:56:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:56:20,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 441 [2020-10-29 07:56:20,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:20,730 INFO L225 Difference]: With dead ends: 19546 [2020-10-29 07:56:20,730 INFO L226 Difference]: Without dead ends: 10121 [2020-10-29 07:56:20,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:56:20,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10121 states. [2020-10-29 07:56:21,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10121 to 10115. [2020-10-29 07:56:21,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10115 states. [2020-10-29 07:56:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10115 states to 10115 states and 12645 transitions. [2020-10-29 07:56:21,133 INFO L78 Accepts]: Start accepts. Automaton has 10115 states and 12645 transitions. Word has length 441 [2020-10-29 07:56:21,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:21,134 INFO L481 AbstractCegarLoop]: Abstraction has 10115 states and 12645 transitions. [2020-10-29 07:56:21,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:56:21,135 INFO L276 IsEmpty]: Start isEmpty. Operand 10115 states and 12645 transitions. [2020-10-29 07:56:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-29 07:56:21,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:21,145 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 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] [2020-10-29 07:56:21,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:56:21,146 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:21,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:21,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1508506694, now seen corresponding path program 1 times [2020-10-29 07:56:21,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:21,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056188459] [2020-10-29 07:56:21,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:21,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:21,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:22,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:23,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:23,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-29 07:56:23,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:56:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2493 [2020-10-29 07:56:23,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:23,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 07:56:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-29 07:56:23,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:23,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:23,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:23,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:23,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:23,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:23,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:56:23,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:23,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:23,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:23,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:23,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:23,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:23,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:56:23,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:23,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 07:56:23,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:23,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:23,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:56:23,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:56:24,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 07:56:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:24,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:24,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:24,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 07:56:24,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:24,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-29 07:56:24,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:24,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:24,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:24,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:24,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 07:56:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:24,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-29 07:56:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:24,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:24,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:24,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:56:24,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 07:56:24,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:24,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 07:56:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:24,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:56:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 152 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 07:56:25,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056188459] [2020-10-29 07:56:25,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:25,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:56:25,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11566583] [2020-10-29 07:56:25,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:56:25,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:25,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:56:25,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:56:25,439 INFO L87 Difference]: Start difference. First operand 10115 states and 12645 transitions. Second operand 7 states. [2020-10-29 07:56:32,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:32,092 INFO L93 Difference]: Finished difference Result 19921 states and 25076 transitions. [2020-10-29 07:56:32,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:56:32,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 443 [2020-10-29 07:56:32,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:32,147 INFO L225 Difference]: With dead ends: 19921 [2020-10-29 07:56:32,147 INFO L226 Difference]: Without dead ends: 9736 [2020-10-29 07:56:32,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:56:32,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9736 states. [2020-10-29 07:56:32,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9736 to 8694. [2020-10-29 07:56:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8694 states. [2020-10-29 07:56:32,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8694 states to 8694 states and 9672 transitions. [2020-10-29 07:56:32,410 INFO L78 Accepts]: Start accepts. Automaton has 8694 states and 9672 transitions. Word has length 443 [2020-10-29 07:56:32,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:32,411 INFO L481 AbstractCegarLoop]: Abstraction has 8694 states and 9672 transitions. [2020-10-29 07:56:32,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:56:32,411 INFO L276 IsEmpty]: Start isEmpty. Operand 8694 states and 9672 transitions. [2020-10-29 07:56:32,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-10-29 07:56:32,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:32,423 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-29 07:56:32,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:56:32,423 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:32,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:32,424 INFO L82 PathProgramCache]: Analyzing trace with hash -651111372, now seen corresponding path program 1 times [2020-10-29 07:56:32,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:32,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510311845] [2020-10-29 07:56:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:32,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:32,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:35,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:35,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 464 [2020-10-29 07:56:35,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:56:35,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2951 [2020-10-29 07:56:35,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:35,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 07:56:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:56:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 455 [2020-10-29 07:56:35,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:35,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:35,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:35,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:35,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:35,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:56:35,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:35,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:56:35,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:35,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:35,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:36,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:36,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:56:36,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:36,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-29 07:56:36,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:36,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:36,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:36,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:36,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-29 07:56:36,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:36,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 07:56:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:36,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:37,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:37,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 07:56:37,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:37,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-29 07:56:37,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:37,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:56:37,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:37,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-29 07:56:37,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 176 proven. 43 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:56:37,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510311845] [2020-10-29 07:56:37,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:37,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:56:37,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147469509] [2020-10-29 07:56:37,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:56:37,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:37,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:56:37,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:56:37,939 INFO L87 Difference]: Start difference. First operand 8694 states and 9672 transitions. Second operand 9 states. [2020-10-29 07:56:40,691 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-29 07:56:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:45,162 INFO L93 Difference]: Finished difference Result 10441 states and 11500 transitions. [2020-10-29 07:56:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:56:45,164 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 450 [2020-10-29 07:56:45,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:45,238 INFO L225 Difference]: With dead ends: 10441 [2020-10-29 07:56:45,238 INFO L226 Difference]: Without dead ends: 10099 [2020-10-29 07:56:45,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:56:45,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10099 states. [2020-10-29 07:56:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10099 to 10072. [2020-10-29 07:56:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10072 states. [2020-10-29 07:56:45,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10072 states to 10072 states and 11125 transitions. [2020-10-29 07:56:45,442 INFO L78 Accepts]: Start accepts. Automaton has 10072 states and 11125 transitions. Word has length 450 [2020-10-29 07:56:45,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:45,443 INFO L481 AbstractCegarLoop]: Abstraction has 10072 states and 11125 transitions. [2020-10-29 07:56:45,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 07:56:45,444 INFO L276 IsEmpty]: Start isEmpty. Operand 10072 states and 11125 transitions. [2020-10-29 07:56:45,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-10-29 07:56:45,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:45,449 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:56:45,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:56:45,450 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:45,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:45,451 INFO L82 PathProgramCache]: Analyzing trace with hash 843299230, now seen corresponding path program 1 times [2020-10-29 07:56:45,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:45,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811086807] [2020-10-29 07:56:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:45,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:45,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:47,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:47,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-29 07:56:47,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:56:47,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1742 [2020-10-29 07:56:47,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:47,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-29 07:56:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 07:56:47,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:47,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:47,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:47,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:47,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:47,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:47,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:56:47,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:47,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:47,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:47,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:47,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:47,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:47,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:47,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:47,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:47,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 07:56:47,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:47,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:56:47,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:47,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:47,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:47,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:47,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:47,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:47,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 07:56:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:47,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:47,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:47,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:56:47,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:47,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:56:47,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:47,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:47,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:56:47,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:47,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-29 07:56:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:47,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:47,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:47,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 07:56:47,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:47,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 07:56:47,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:47,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:47,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:47,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:47,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:56:47,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 07:56:48,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811086807] [2020-10-29 07:56:48,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:48,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:56:48,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585575220] [2020-10-29 07:56:48,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:56:48,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:48,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:56:48,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:56:48,162 INFO L87 Difference]: Start difference. First operand 10072 states and 11125 transitions. Second operand 8 states. [2020-10-29 07:56:55,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:55,821 INFO L93 Difference]: Finished difference Result 23899 states and 27189 transitions. [2020-10-29 07:56:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:56:55,822 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 469 [2020-10-29 07:56:55,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:55,866 INFO L225 Difference]: With dead ends: 23899 [2020-10-29 07:56:55,866 INFO L226 Difference]: Without dead ends: 14509 [2020-10-29 07:56:55,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:56:55,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14509 states. [2020-10-29 07:56:56,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14509 to 13823. [2020-10-29 07:56:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13823 states. [2020-10-29 07:56:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13823 states to 13823 states and 15830 transitions. [2020-10-29 07:56:56,183 INFO L78 Accepts]: Start accepts. Automaton has 13823 states and 15830 transitions. Word has length 469 [2020-10-29 07:56:56,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:56,184 INFO L481 AbstractCegarLoop]: Abstraction has 13823 states and 15830 transitions. [2020-10-29 07:56:56,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:56:56,184 INFO L276 IsEmpty]: Start isEmpty. Operand 13823 states and 15830 transitions. [2020-10-29 07:56:56,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-29 07:56:56,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:56,190 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:56:56,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:56:56,191 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:56,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:56,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1782164884, now seen corresponding path program 1 times [2020-10-29 07:56:56,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:56,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541304163] [2020-10-29 07:56:56,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:56,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:56,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:56,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 514 [2020-10-29 07:56:56,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:56,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-29 07:56:56,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:56,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:56,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 484 [2020-10-29 07:56:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 07:56:56,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:57,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:57,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:57,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:57,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:57,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:57,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:56:57,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:57,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:57,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:57,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:57,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:57,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:57,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 07:56:57,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:57,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 07:56:57,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:57,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:57,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:57,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:57,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:57,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:57,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 07:56:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:57,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:57,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:57,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:56:57,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:56:57,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:57,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:57,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:57,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-29 07:56:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:57,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:57,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:57,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 07:56:57,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:57,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:56:57,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:57,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 07:56:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-29 07:56:57,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541304163] [2020-10-29 07:56:57,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:57,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:56:57,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011821727] [2020-10-29 07:56:57,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:56:57,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:57,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:56:57,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:56:57,569 INFO L87 Difference]: Start difference. First operand 13823 states and 15830 transitions. Second operand 5 states. [2020-10-29 07:57:03,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:03,106 INFO L93 Difference]: Finished difference Result 30415 states and 35307 transitions. [2020-10-29 07:57:03,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:57:03,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 498 [2020-10-29 07:57:03,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:03,156 INFO L225 Difference]: With dead ends: 30415 [2020-10-29 07:57:03,157 INFO L226 Difference]: Without dead ends: 16871 [2020-10-29 07:57:03,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:57:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16871 states. [2020-10-29 07:57:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16871 to 15854. [2020-10-29 07:57:03,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15854 states. [2020-10-29 07:57:03,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15854 states to 15854 states and 17768 transitions. [2020-10-29 07:57:03,539 INFO L78 Accepts]: Start accepts. Automaton has 15854 states and 17768 transitions. Word has length 498 [2020-10-29 07:57:03,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:03,540 INFO L481 AbstractCegarLoop]: Abstraction has 15854 states and 17768 transitions. [2020-10-29 07:57:03,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:57:03,541 INFO L276 IsEmpty]: Start isEmpty. Operand 15854 states and 17768 transitions. [2020-10-29 07:57:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-29 07:57:03,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:03,548 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:57:03,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:57:03,549 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:03,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:03,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1563350542, now seen corresponding path program 1 times [2020-10-29 07:57:03,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:03,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003449736] [2020-10-29 07:57:03,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:03,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:03,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:06,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:06,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-29 07:57:06,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:57:06,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2360 [2020-10-29 07:57:06,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:06,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:06,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:06,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-29 07:57:06,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 07:57:06,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:06,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:06,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:06,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:06,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:06,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:06,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:57:06,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:06,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:06,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:06,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:06,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:06,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 07:57:06,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:06,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 07:57:06,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:06,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:06,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:06,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 07:57:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:06,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:06,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:06,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:57:06,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:57:06,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:06,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:57:06,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:06,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-29 07:57:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:06,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:06,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:06,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 07:57:06,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:06,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 07:57:06,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:06,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 07:57:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 07:57:07,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003449736] [2020-10-29 07:57:07,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:07,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:57:07,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125250083] [2020-10-29 07:57:07,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:57:07,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:07,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:57:07,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:57:07,140 INFO L87 Difference]: Start difference. First operand 15854 states and 17768 transitions. Second operand 7 states. [2020-10-29 07:57:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:12,807 INFO L93 Difference]: Finished difference Result 33419 states and 37450 transitions. [2020-10-29 07:57:12,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:57:12,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 541 [2020-10-29 07:57:12,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:12,867 INFO L225 Difference]: With dead ends: 33419 [2020-10-29 07:57:12,867 INFO L226 Difference]: Without dead ends: 18247 [2020-10-29 07:57:12,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:57:12,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18247 states. [2020-10-29 07:57:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18247 to 17562. [2020-10-29 07:57:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17562 states. [2020-10-29 07:57:13,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17562 states to 17562 states and 19605 transitions. [2020-10-29 07:57:13,264 INFO L78 Accepts]: Start accepts. Automaton has 17562 states and 19605 transitions. Word has length 541 [2020-10-29 07:57:13,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:13,265 INFO L481 AbstractCegarLoop]: Abstraction has 17562 states and 19605 transitions. [2020-10-29 07:57:13,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:13,266 INFO L276 IsEmpty]: Start isEmpty. Operand 17562 states and 19605 transitions. [2020-10-29 07:57:13,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-10-29 07:57:13,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:13,273 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2020-10-29 07:57:13,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:57:13,274 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:13,274 INFO L82 PathProgramCache]: Analyzing trace with hash -826766934, now seen corresponding path program 1 times [2020-10-29 07:57:13,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:13,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385668265] [2020-10-29 07:57:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:13,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:14,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:14,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-29 07:57:14,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:14,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1208 [2020-10-29 07:57:14,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:14,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:57:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-29 07:57:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 300 [2020-10-29 07:57:14,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:14,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:14,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:14,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:14,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:14,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:14,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:57:14,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:14,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:14,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:14,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:14,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:14,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:14,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:14,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:14,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 07:57:14,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:14,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 07:57:14,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:14,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-29 07:57:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:15,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 07:57:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:15,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:15,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:15,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-29 07:57:15,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:15,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-29 07:57:15,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:15,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:15,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:57:15,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:15,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-29 07:57:15,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 266 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:57:15,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385668265] [2020-10-29 07:57:15,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:15,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:57:15,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111382140] [2020-10-29 07:57:15,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:57:15,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:15,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:57:15,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:57:15,831 INFO L87 Difference]: Start difference. First operand 17562 states and 19605 transitions. Second operand 8 states. [2020-10-29 07:57:24,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:24,799 INFO L93 Difference]: Finished difference Result 38910 states and 43886 transitions. [2020-10-29 07:57:24,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:57:24,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 547 [2020-10-29 07:57:24,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:24,858 INFO L225 Difference]: With dead ends: 38910 [2020-10-29 07:57:24,858 INFO L226 Difference]: Without dead ends: 21689 [2020-10-29 07:57:24,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:57:24,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21689 states. [2020-10-29 07:57:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21689 to 21324. [2020-10-29 07:57:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21324 states. [2020-10-29 07:57:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21324 states to 21324 states and 24149 transitions. [2020-10-29 07:57:25,321 INFO L78 Accepts]: Start accepts. Automaton has 21324 states and 24149 transitions. Word has length 547 [2020-10-29 07:57:25,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:25,322 INFO L481 AbstractCegarLoop]: Abstraction has 21324 states and 24149 transitions. [2020-10-29 07:57:25,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:57:25,322 INFO L276 IsEmpty]: Start isEmpty. Operand 21324 states and 24149 transitions. [2020-10-29 07:57:25,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-29 07:57:25,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:25,332 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-29 07:57:25,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 07:57:25,332 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:25,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1952025740, now seen corresponding path program 1 times [2020-10-29 07:57:25,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:25,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720519254] [2020-10-29 07:57:25,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:25,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:25,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:25,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 574 [2020-10-29 07:57:25,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-29 07:57:25,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:25,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:25,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-29 07:57:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-29 07:57:25,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:26,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:26,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:26,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:26,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:26,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:26,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:57:26,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:26,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:26,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:26,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:26,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:26,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 07:57:26,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:26,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 07:57:26,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:26,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:26,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 07:57:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:26,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:26,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:57:26,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:26,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 07:57:26,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:26,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:26,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:26,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:26,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:57:26,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:26,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-29 07:57:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:26,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:26,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 07:57:26,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:26,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 07:57:26,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:26,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:26,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:26,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:26,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-29 07:57:26,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 07:57:26,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720519254] [2020-10-29 07:57:26,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:26,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:57:26,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249364213] [2020-10-29 07:57:26,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:57:26,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:26,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:57:26,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:57:26,972 INFO L87 Difference]: Start difference. First operand 21324 states and 24149 transitions. Second operand 7 states. [2020-10-29 07:57:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:33,052 INFO L93 Difference]: Finished difference Result 44692 states and 50995 transitions. [2020-10-29 07:57:33,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:57:33,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 558 [2020-10-29 07:57:33,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:33,127 INFO L225 Difference]: With dead ends: 44692 [2020-10-29 07:57:33,127 INFO L226 Difference]: Without dead ends: 23708 [2020-10-29 07:57:33,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:57:33,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23708 states. [2020-10-29 07:57:33,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23708 to 23696. [2020-10-29 07:57:33,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23696 states. [2020-10-29 07:57:33,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23696 states to 23696 states and 26647 transitions. [2020-10-29 07:57:33,732 INFO L78 Accepts]: Start accepts. Automaton has 23696 states and 26647 transitions. Word has length 558 [2020-10-29 07:57:33,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:33,733 INFO L481 AbstractCegarLoop]: Abstraction has 23696 states and 26647 transitions. [2020-10-29 07:57:33,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:33,733 INFO L276 IsEmpty]: Start isEmpty. Operand 23696 states and 26647 transitions. [2020-10-29 07:57:33,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-10-29 07:57:33,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:33,742 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-29 07:57:33,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 07:57:33,743 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:33,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:33,744 INFO L82 PathProgramCache]: Analyzing trace with hash -683226692, now seen corresponding path program 1 times [2020-10-29 07:57:33,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:33,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901929687] [2020-10-29 07:57:33,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:34,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:35,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:36,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:36,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 602 [2020-10-29 07:57:36,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:57:36,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2931 [2020-10-29 07:57:36,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:36,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-29 07:57:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 07:57:36,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:37,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:37,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:37,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:37,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:57:37,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:37,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:37,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:37,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:37,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:37,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:57:37,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:37,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:57:37,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:37,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:37,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:37,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 07:57:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:37,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:37,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:37,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 07:57:37,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:37,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 07:57:37,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:37,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-29 07:57:37,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:37,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-29 07:57:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:37,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:37,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:37,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 07:57:37,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:37,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 07:57:37,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:37,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:57:37,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-29 07:57:37,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901929687] [2020-10-29 07:57:37,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:37,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:57:37,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100777796] [2020-10-29 07:57:37,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:57:37,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:37,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:57:37,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:57:37,799 INFO L87 Difference]: Start difference. First operand 23696 states and 26647 transitions. Second operand 7 states. [2020-10-29 07:57:44,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:44,638 INFO L93 Difference]: Finished difference Result 49422 states and 55840 transitions. [2020-10-29 07:57:44,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:57:44,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 586 [2020-10-29 07:57:44,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:44,718 INFO L225 Difference]: With dead ends: 49422 [2020-10-29 07:57:44,718 INFO L226 Difference]: Without dead ends: 26408 [2020-10-29 07:57:44,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:57:44,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26408 states. [2020-10-29 07:57:45,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26408 to 25717. [2020-10-29 07:57:45,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25717 states. [2020-10-29 07:57:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25717 states to 25717 states and 28993 transitions. [2020-10-29 07:57:45,327 INFO L78 Accepts]: Start accepts. Automaton has 25717 states and 28993 transitions. Word has length 586 [2020-10-29 07:57:45,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:45,328 INFO L481 AbstractCegarLoop]: Abstraction has 25717 states and 28993 transitions. [2020-10-29 07:57:45,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:57:45,328 INFO L276 IsEmpty]: Start isEmpty. Operand 25717 states and 28993 transitions. [2020-10-29 07:57:45,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2020-10-29 07:57:45,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:45,341 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2020-10-29 07:57:45,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 07:57:45,342 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:45,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:45,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1179839180, now seen corresponding path program 1 times [2020-10-29 07:57:45,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:45,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413557927] [2020-10-29 07:57:45,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:46,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:46,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 606 [2020-10-29 07:57:46,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:46,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-29 07:57:46,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:46,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 573 [2020-10-29 07:57:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 07:57:46,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:46,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:46,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:46,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:46,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:46,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:46,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:57:46,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:46,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:46,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:46,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:57:46,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:46,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:46,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:46,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 07:57:46,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:46,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 07:57:46,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:46,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:46,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:46,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:46,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 07:57:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:46,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:47,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:47,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-29 07:57:47,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:47,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 07:57:47,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:47,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:47,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:47,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:47,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 309 [2020-10-29 07:57:47,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:47,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:57:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:47,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:47,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:47,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 07:57:47,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:47,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:57:47,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:47,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 07:57:47,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2020-10-29 07:57:47,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413557927] [2020-10-29 07:57:47,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:47,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:57:47,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939152539] [2020-10-29 07:57:47,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:57:47,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:47,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:57:47,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:57:47,470 INFO L87 Difference]: Start difference. First operand 25717 states and 28993 transitions. Second operand 5 states. [2020-10-29 07:57:52,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:57:52,853 INFO L93 Difference]: Finished difference Result 51798 states and 58525 transitions. [2020-10-29 07:57:52,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:57:52,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 590 [2020-10-29 07:57:52,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:57:52,920 INFO L225 Difference]: With dead ends: 51798 [2020-10-29 07:57:52,920 INFO L226 Difference]: Without dead ends: 26366 [2020-10-29 07:57:52,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:57:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26366 states. [2020-10-29 07:57:53,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26366 to 26357. [2020-10-29 07:57:53,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26357 states. [2020-10-29 07:57:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26357 states to 26357 states and 29065 transitions. [2020-10-29 07:57:53,440 INFO L78 Accepts]: Start accepts. Automaton has 26357 states and 29065 transitions. Word has length 590 [2020-10-29 07:57:53,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:57:53,441 INFO L481 AbstractCegarLoop]: Abstraction has 26357 states and 29065 transitions. [2020-10-29 07:57:53,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:57:53,441 INFO L276 IsEmpty]: Start isEmpty. Operand 26357 states and 29065 transitions. [2020-10-29 07:57:53,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2020-10-29 07:57:53,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:57:53,454 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:57:53,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 07:57:53,454 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:57:53,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:57:53,455 INFO L82 PathProgramCache]: Analyzing trace with hash -316696622, now seen corresponding path program 1 times [2020-10-29 07:57:53,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:57:53,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550244910] [2020-10-29 07:57:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:57:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:53,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:54,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:54,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 689 [2020-10-29 07:57:54,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:54,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 869 [2020-10-29 07:57:54,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:54,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:54,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:54,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-29 07:57:54,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-29 07:57:54,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:54,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:57:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:54,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:54,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:54,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:57:54,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:54,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:57:54,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:54,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:54,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:54,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:54,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:54,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:54,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:57:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:54,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:54,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:54,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:57:54,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:54,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:57:54,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:54,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:54,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:57:54,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:54,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:57:54,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:54,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 07:57:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:54,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:55,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:55,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 07:57:55,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-29 07:57:55,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:55,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:57:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:57:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-29 07:57:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:55,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 07:57:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:57:55,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:57:55,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:57:55,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 07:57:55,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:57:55,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 07:57:55,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:57:55,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:57:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:57:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:57:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-29 07:57:55,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:57:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 425 proven. 2 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-29 07:57:55,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550244910] [2020-10-29 07:57:55,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:57:55,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:57:55,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403718219] [2020-10-29 07:57:55,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:57:55,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:57:55,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:57:55,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:57:55,693 INFO L87 Difference]: Start difference. First operand 26357 states and 29065 transitions. Second operand 8 states. [2020-10-29 07:58:03,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:58:03,286 INFO L93 Difference]: Finished difference Result 52390 states and 57793 transitions. [2020-10-29 07:58:03,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:58:03,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 673 [2020-10-29 07:58:03,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:58:03,363 INFO L225 Difference]: With dead ends: 52390 [2020-10-29 07:58:03,363 INFO L226 Difference]: Without dead ends: 26374 [2020-10-29 07:58:03,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:58:03,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26374 states. [2020-10-29 07:58:03,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26374 to 25346. [2020-10-29 07:58:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25346 states. [2020-10-29 07:58:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25346 states to 25346 states and 27144 transitions. [2020-10-29 07:58:03,755 INFO L78 Accepts]: Start accepts. Automaton has 25346 states and 27144 transitions. Word has length 673 [2020-10-29 07:58:03,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:58:03,756 INFO L481 AbstractCegarLoop]: Abstraction has 25346 states and 27144 transitions. [2020-10-29 07:58:03,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:58:03,756 INFO L276 IsEmpty]: Start isEmpty. Operand 25346 states and 27144 transitions. [2020-10-29 07:58:03,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2020-10-29 07:58:03,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:58:03,769 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:58:03,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 07:58:03,769 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:58:03,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:58:03,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1284283618, now seen corresponding path program 1 times [2020-10-29 07:58:03,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:58:03,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777740949] [2020-10-29 07:58:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:58:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:04,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:05,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:08,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:08,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:08,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 713 [2020-10-29 07:58:08,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:58:08,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4920 [2020-10-29 07:58:08,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:08,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:58:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:58:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 704 [2020-10-29 07:58:08,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:09,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:58:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:09,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:09,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:09,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:58:09,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:09,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:58:09,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:09,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:58:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:58:09,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:58:09,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:58:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:09,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:09,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:09,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:09,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 07:58:09,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:58:09,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-29 07:58:09,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:09,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:09,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:58:09,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:09,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-29 07:58:09,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:09,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 07:58:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:09,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:09,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:10,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:10,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:58:10,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:58:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-29 07:58:10,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:10,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:58:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:58:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 07:58:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:10,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-10-29 07:58:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:58:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:58:10,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:58:10,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 07:58:10,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:58:10,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 07:58:10,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:58:10,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:58:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:58:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:58:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-29 07:58:10,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:58:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 384 proven. 43 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2020-10-29 07:58:13,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777740949] [2020-10-29 07:58:13,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:58:13,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:58:13,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250016498] [2020-10-29 07:58:13,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:58:13,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:58:13,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:58:13,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:58:13,577 INFO L87 Difference]: Start difference. First operand 25346 states and 27144 transitions. Second operand 10 states. [2020-10-29 07:58:18,973 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-29 07:58:19,430 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 07:58:27,587 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-29 07:58:28,775 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 58