/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=SHALLOWEST --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/Problem15_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:41:53,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:41:53,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:41:53,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:41:53,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:41:53,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:41:53,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:41:53,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:41:53,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:41:53,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:41:53,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:41:53,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:41:53,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:41:53,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:41:53,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:41:53,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:41:53,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:41:53,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:41:53,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:41:53,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:41:53,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:41:53,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:41:53,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:41:53,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:41:53,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:41:53,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:41:53,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:41:53,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:41:53,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:41:53,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:41:53,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:41:53,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:41:53,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:41:53,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:41:53,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:41:53,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:41:53,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:41:53,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:41:53,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:41:53,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:41:53,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:41:53,556 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 [2020-10-26 23:41:53,608 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:41:53,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:41:53,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:41:53,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:41:53,612 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:41:53,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:41:53,612 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:41:53,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:41:53,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:41:53,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:41:53,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:41:53,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:41:53,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:41:53,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:41:53,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:41:53,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:41:53,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:41:53,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:41:53,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:41:53,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:41:53,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:41:53,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:41:53,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:41:53,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:41:53,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:41:53,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:41:53,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:41:53,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:41:53,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:41:53,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:41:54,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:41:54,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:41:54,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:41:54,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:41:54,099 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:41:54,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label29.c [2020-10-26 23:41:54,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0db210123/6a6d05916a5e42e6a0ceae939a9ec660/FLAG491c069fe [2020-10-26 23:41:55,138 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:41:55,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label29.c [2020-10-26 23:41:55,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0db210123/6a6d05916a5e42e6a0ceae939a9ec660/FLAG491c069fe [2020-10-26 23:41:55,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0db210123/6a6d05916a5e42e6a0ceae939a9ec660 [2020-10-26 23:41:55,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:41:55,693 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:41:55,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:41:55,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:41:55,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:41:55,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:41:55" (1/1) ... [2020-10-26 23:41:55,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30063588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:55, skipping insertion in model container [2020-10-26 23:41:55,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:41:55" (1/1) ... [2020-10-26 23:41:55,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:41:55,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:41:56,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:41:56,677 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:41:56,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:41:56,980 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:41:56,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:56 WrapperNode [2020-10-26 23:41:56,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:41:56,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:41:56,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:41:56,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:41:56,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:56" (1/1) ... [2020-10-26 23:41:56,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:56" (1/1) ... [2020-10-26 23:41:57,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:56" (1/1) ... [2020-10-26 23:41:57,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:56" (1/1) ... [2020-10-26 23:41:57,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:56" (1/1) ... [2020-10-26 23:41:57,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:56" (1/1) ... [2020-10-26 23:41:57,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:56" (1/1) ... [2020-10-26 23:41:57,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:41:57,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:41:57,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:41:57,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:41:57,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:56" (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 [2020-10-26 23:41:57,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:41:57,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:41:57,412 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:41:57,413 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:41:57,414 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:41:57,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:41:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:41:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:41:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:41:57,415 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:41:57,415 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:41:57,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:41:57,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:41:57,416 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:41:57,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:41:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:41:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:41:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:41:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:41:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:41:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:42:00,763 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:42:00,763 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:42:00,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:42:00 BoogieIcfgContainer [2020-10-26 23:42:00,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:42:00,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:42:00,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:42:00,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:42:00,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:41:55" (1/3) ... [2020-10-26 23:42:00,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731bf5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:42:00, skipping insertion in model container [2020-10-26 23:42:00,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:41:56" (2/3) ... [2020-10-26 23:42:00,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731bf5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:42:00, skipping insertion in model container [2020-10-26 23:42:00,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:42:00" (3/3) ... [2020-10-26 23:42:00,774 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label29.c [2020-10-26 23:42:00,786 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:42:00,793 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:42:00,807 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:42:00,856 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:42:00,856 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:42:00,857 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:42:00,857 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:42:00,857 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:42:00,857 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:42:00,857 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:42:00,857 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:42:00,884 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:42:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-26 23:42:00,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:00,892 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] [2020-10-26 23:42:00,892 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:00,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:00,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1910341919, now seen corresponding path program 1 times [2020-10-26 23:42:00,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:00,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209469036] [2020-10-26 23:42:00,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:01,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:01,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:01,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-26 23:42:01,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:01,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-10-26 23:42:01,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:01,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:42:01,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:01,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-26 23:42:01,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:42:01,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:01,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:01,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:01,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:01,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:01,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:42:01,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:01,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:01,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:01,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:42:01,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209469036] [2020-10-26 23:42:01,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:42:01,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:42:01,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184205771] [2020-10-26 23:42:01,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:42:01,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:01,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:42:01,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:42:01,940 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:42:08,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:42:08,401 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-26 23:42:08,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:42:08,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-26 23:42:08,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:42:08,427 INFO L225 Difference]: With dead ends: 1204 [2020-10-26 23:42:08,427 INFO L226 Difference]: Without dead ends: 698 [2020-10-26 23:42:08,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:42:08,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-26 23:42:08,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-26 23:42:08,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-26 23:42:08,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-26 23:42:08,574 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 28 [2020-10-26 23:42:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:42:08,574 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-26 23:42:08,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:42:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-26 23:42:08,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-26 23:42:08,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:08,584 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] [2020-10-26 23:42:08,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:42:08,585 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:08,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:08,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1021432406, now seen corresponding path program 1 times [2020-10-26 23:42:08,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:08,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395512067] [2020-10-26 23:42:08,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:08,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:08,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:10,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:10,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-26 23:42:10,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:42:10,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1896 [2020-10-26 23:42:10,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:42:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:42:10,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:42:10,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:10,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:10,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:10,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:10,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:42:10,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:10,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:10,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:42:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:10,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:10,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:10,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:42:10,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-26 23:42:10,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:42:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:42:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:42:10,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:42:11,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395512067] [2020-10-26 23:42:11,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:42:11,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:42:11,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374186658] [2020-10-26 23:42:11,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:42:11,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:11,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:42:11,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:42:11,037 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-26 23:42:20,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:42:20,818 INFO L93 Difference]: Finished difference Result 2035 states and 2994 transitions. [2020-10-26 23:42:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:42:20,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-26 23:42:20,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:42:20,832 INFO L225 Difference]: With dead ends: 2035 [2020-10-26 23:42:20,833 INFO L226 Difference]: Without dead ends: 1349 [2020-10-26 23:42:20,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:42:20,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2020-10-26 23:42:20,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1325. [2020-10-26 23:42:20,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1325 states. [2020-10-26 23:42:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1717 transitions. [2020-10-26 23:42:20,922 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1717 transitions. Word has length 97 [2020-10-26 23:42:20,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:42:20,923 INFO L481 AbstractCegarLoop]: Abstraction has 1325 states and 1717 transitions. [2020-10-26 23:42:20,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:42:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1717 transitions. [2020-10-26 23:42:20,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-26 23:42:20,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:20,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:42:20,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:42:20,943 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:20,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:20,944 INFO L82 PathProgramCache]: Analyzing trace with hash -923909016, now seen corresponding path program 1 times [2020-10-26 23:42:20,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:20,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063181222] [2020-10-26 23:42:20,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:21,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:21,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:22,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:24,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:26,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:26,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 23:42:26,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:42:26,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-26 23:42:26,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:26,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:42:26,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:26,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-26 23:42:26,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:26,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:26,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:26,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:26,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:26,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:26,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:42:26,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:26,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:26,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:26,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:26,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:26,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:42:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:26,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:26,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:26,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:42:26,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:26,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 23:42:26,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:26,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:42:26,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:42:26,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:42:26,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:42:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:26,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:26,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:42:26,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:26,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-26 23:42:26,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:26,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:42:26,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:42:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:42:26,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:26,856 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-26 23:42:26,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063181222] [2020-10-26 23:42:26,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:42:26,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:42:26,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125425231] [2020-10-26 23:42:26,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:42:26,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:26,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:42:26,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:42:26,860 INFO L87 Difference]: Start difference. First operand 1325 states and 1717 transitions. Second operand 7 states. [2020-10-26 23:42:42,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:42:42,653 INFO L93 Difference]: Finished difference Result 3938 states and 5110 transitions. [2020-10-26 23:42:42,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:42:42,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-26 23:42:42,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:42:42,679 INFO L225 Difference]: With dead ends: 3938 [2020-10-26 23:42:42,680 INFO L226 Difference]: Without dead ends: 2619 [2020-10-26 23:42:42,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:42:42,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2020-10-26 23:42:42,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2579. [2020-10-26 23:42:42,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2579 states. [2020-10-26 23:42:42,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 3118 transitions. [2020-10-26 23:42:42,795 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 3118 transitions. Word has length 202 [2020-10-26 23:42:42,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:42:42,796 INFO L481 AbstractCegarLoop]: Abstraction has 2579 states and 3118 transitions. [2020-10-26 23:42:42,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:42:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 3118 transitions. [2020-10-26 23:42:42,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-26 23:42:42,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:42,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:42:42,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:42:42,803 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:42,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:42,804 INFO L82 PathProgramCache]: Analyzing trace with hash 631956252, now seen corresponding path program 1 times [2020-10-26 23:42:42,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:42,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724794361] [2020-10-26 23:42:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:42,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:43,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:43,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:47,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:47,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-26 23:42:47,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:42:47,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-26 23:42:47,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:42:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:42:47,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:48,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:48,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:48,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:48,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:48,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:42:48,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:48,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:48,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:48,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:48,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:48,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:42:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:48,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:48,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:48,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:42:48,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:48,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-26 23:42:48,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:48,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:42:48,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:42:48,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:42:48,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:42:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:49,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:49,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:49,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:42:49,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:49,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:42:49,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:42:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:42:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:42:49,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 40 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:42:49,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724794361] [2020-10-26 23:42:49,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:42:49,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:42:49,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854190752] [2020-10-26 23:42:49,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:42:49,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:49,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:42:49,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:42:49,572 INFO L87 Difference]: Start difference. First operand 2579 states and 3118 transitions. Second operand 7 states. [2020-10-26 23:43:00,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:00,003 INFO L93 Difference]: Finished difference Result 4942 states and 6109 transitions. [2020-10-26 23:43:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:43:00,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-26 23:43:00,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:00,028 INFO L225 Difference]: With dead ends: 4942 [2020-10-26 23:43:00,028 INFO L226 Difference]: Without dead ends: 2676 [2020-10-26 23:43:00,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:43:00,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2020-10-26 23:43:00,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2581. [2020-10-26 23:43:00,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2581 states. [2020-10-26 23:43:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2581 states to 2581 states and 3116 transitions. [2020-10-26 23:43:00,170 INFO L78 Accepts]: Start accepts. Automaton has 2581 states and 3116 transitions. Word has length 308 [2020-10-26 23:43:00,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:00,171 INFO L481 AbstractCegarLoop]: Abstraction has 2581 states and 3116 transitions. [2020-10-26 23:43:00,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:43:00,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2581 states and 3116 transitions. [2020-10-26 23:43:00,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-26 23:43:00,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:00,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:43:00,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:43:00,180 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:00,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:00,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1420182058, now seen corresponding path program 1 times [2020-10-26 23:43:00,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:00,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671266199] [2020-10-26 23:43:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:00,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:00,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:00,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:01,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:01,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:05,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:05,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-26 23:43:05,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:43:05,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:43:05,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:43:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:43:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 328 [2020-10-26 23:43:05,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:05,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:05,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:05,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:05,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:05,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:05,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:43:05,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:05,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:05,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:05,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:43:05,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:43:05,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:05,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:05,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:05,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:43:05,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:05,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 23:43:05,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:05,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:05,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:05,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:43:05,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:06,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:43:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:07,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:07,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:43:07,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:43:07,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-10-26 23:43:07,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:43:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:43:07,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 13 proven. 118 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:43:08,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671266199] [2020-10-26 23:43:08,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:43:08,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:43:08,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182552316] [2020-10-26 23:43:08,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:43:08,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:08,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:43:08,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:43:08,452 INFO L87 Difference]: Start difference. First operand 2581 states and 3116 transitions. Second operand 12 states. [2020-10-26 23:43:08,753 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 74 [2020-10-26 23:43:10,260 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2020-10-26 23:43:10,906 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2020-10-26 23:43:11,204 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-26 23:43:12,566 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-10-26 23:43:13,056 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-26 23:43:13,332 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2020-10-26 23:43:13,966 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-10-26 23:43:14,245 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-10-26 23:43:16,917 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-26 23:43:23,689 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-26 23:43:26,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:26,097 INFO L93 Difference]: Finished difference Result 5307 states and 6658 transitions. [2020-10-26 23:43:26,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 23:43:26,099 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 323 [2020-10-26 23:43:26,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:26,117 INFO L225 Difference]: With dead ends: 5307 [2020-10-26 23:43:26,118 INFO L226 Difference]: Without dead ends: 3979 [2020-10-26 23:43:26,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=338, Invalid=852, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 23:43:26,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2020-10-26 23:43:26,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3539. [2020-10-26 23:43:26,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2020-10-26 23:43:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 4340 transitions. [2020-10-26 23:43:26,231 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 4340 transitions. Word has length 323 [2020-10-26 23:43:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:26,232 INFO L481 AbstractCegarLoop]: Abstraction has 3539 states and 4340 transitions. [2020-10-26 23:43:26,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:43:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 4340 transitions. [2020-10-26 23:43:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-26 23:43:26,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:26,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:43:26,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:43:26,242 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:26,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:26,243 INFO L82 PathProgramCache]: Analyzing trace with hash -494138142, now seen corresponding path program 1 times [2020-10-26 23:43:26,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:26,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972237307] [2020-10-26 23:43:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:26,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:28,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:28,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-26 23:43:28,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:43:28,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1973 [2020-10-26 23:43:28,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:28,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:43:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 23:43:28,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:28,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:28,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:28,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:28,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:28,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:43:28,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:43:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:43:28,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:28,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:28,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:29,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:29,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:43:29,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:29,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-26 23:43:29,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:29,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:29,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:29,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:43:29,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:29,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:43:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:29,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:29,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 23:43:29,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:29,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-26 23:43:29,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:43:29,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:43:29,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972237307] [2020-10-26 23:43:29,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:43:29,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:43:29,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9760321] [2020-10-26 23:43:29,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:43:29,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:29,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:43:29,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:43:29,589 INFO L87 Difference]: Start difference. First operand 3539 states and 4340 transitions. Second operand 8 states. [2020-10-26 23:43:45,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:45,855 INFO L93 Difference]: Finished difference Result 9672 states and 12824 transitions. [2020-10-26 23:43:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:43:45,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 387 [2020-10-26 23:43:45,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:45,895 INFO L225 Difference]: With dead ends: 9672 [2020-10-26 23:43:45,896 INFO L226 Difference]: Without dead ends: 6755 [2020-10-26 23:43:45,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:43:45,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6755 states. [2020-10-26 23:43:46,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6755 to 6726. [2020-10-26 23:43:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6726 states. [2020-10-26 23:43:46,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6726 states to 6726 states and 8483 transitions. [2020-10-26 23:43:46,112 INFO L78 Accepts]: Start accepts. Automaton has 6726 states and 8483 transitions. Word has length 387 [2020-10-26 23:43:46,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:46,113 INFO L481 AbstractCegarLoop]: Abstraction has 6726 states and 8483 transitions. [2020-10-26 23:43:46,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:43:46,113 INFO L276 IsEmpty]: Start isEmpty. Operand 6726 states and 8483 transitions. [2020-10-26 23:43:46,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-26 23:43:46,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:46,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:43:46,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:43:46,124 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:46,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:46,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1814432608, now seen corresponding path program 1 times [2020-10-26 23:43:46,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:46,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709843975] [2020-10-26 23:43:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:46,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:46,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:48,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:48,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-26 23:43:48,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:43:48,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1978 [2020-10-26 23:43:48,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:48,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:48,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:43:48,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:43:48,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:48,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:48,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:48,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:48,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:48,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:48,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:43:48,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:43:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:43:48,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:48,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:48,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:48,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:48,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:43:48,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:48,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-26 23:43:48,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:43:48,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:48,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:43:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:48,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:49,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:49,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:43:49,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:49,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-26 23:43:49,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:43:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:43:49,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709843975] [2020-10-26 23:43:49,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:43:49,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:43:49,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945921904] [2020-10-26 23:43:49,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:43:49,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:49,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:43:49,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:43:49,498 INFO L87 Difference]: Start difference. First operand 6726 states and 8483 transitions. Second operand 7 states. [2020-10-26 23:44:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:01,508 INFO L93 Difference]: Finished difference Result 14466 states and 18473 transitions. [2020-10-26 23:44:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:44:01,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 413 [2020-10-26 23:44:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:01,569 INFO L225 Difference]: With dead ends: 14466 [2020-10-26 23:44:01,570 INFO L226 Difference]: Without dead ends: 8362 [2020-10-26 23:44:01,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:44:01,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8362 states. [2020-10-26 23:44:01,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8362 to 8316. [2020-10-26 23:44:01,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8316 states. [2020-10-26 23:44:01,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8316 states to 8316 states and 10265 transitions. [2020-10-26 23:44:01,842 INFO L78 Accepts]: Start accepts. Automaton has 8316 states and 10265 transitions. Word has length 413 [2020-10-26 23:44:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:01,843 INFO L481 AbstractCegarLoop]: Abstraction has 8316 states and 10265 transitions. [2020-10-26 23:44:01,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:44:01,843 INFO L276 IsEmpty]: Start isEmpty. Operand 8316 states and 10265 transitions. [2020-10-26 23:44:01,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-26 23:44:01,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:01,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:01,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:44:01,852 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:01,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:01,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1123904296, now seen corresponding path program 1 times [2020-10-26 23:44:01,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:01,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537708215] [2020-10-26 23:44:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:02,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:02,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:02,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-26 23:44:02,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:02,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-10-26 23:44:02,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:02,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:44:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-26 23:44:02,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:02,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:02,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:02,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:02,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:02,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:02,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:44:02,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:02,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:44:02,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:02,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:03,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:03,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:44:03,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:03,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 23:44:03,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:03,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:03,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:03,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:03,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:03,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:44:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:03,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:03,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:03,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:44:03,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:03,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:44:03,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:44:03,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-26 23:44:03,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537708215] [2020-10-26 23:44:03,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:03,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:44:03,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385885220] [2020-10-26 23:44:03,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:44:03,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:03,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:44:03,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:44:03,650 INFO L87 Difference]: Start difference. First operand 8316 states and 10265 transitions. Second operand 5 states. [2020-10-26 23:44:19,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:19,298 INFO L93 Difference]: Finished difference Result 15805 states and 20882 transitions. [2020-10-26 23:44:19,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:44:19,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 425 [2020-10-26 23:44:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:19,344 INFO L225 Difference]: With dead ends: 15805 [2020-10-26 23:44:19,345 INFO L226 Difference]: Without dead ends: 10915 [2020-10-26 23:44:19,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:44:19,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10915 states. [2020-10-26 23:44:19,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10915 to 10898. [2020-10-26 23:44:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10898 states. [2020-10-26 23:44:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10898 states to 10898 states and 13989 transitions. [2020-10-26 23:44:19,697 INFO L78 Accepts]: Start accepts. Automaton has 10898 states and 13989 transitions. Word has length 425 [2020-10-26 23:44:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:19,698 INFO L481 AbstractCegarLoop]: Abstraction has 10898 states and 13989 transitions. [2020-10-26 23:44:19,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:44:19,698 INFO L276 IsEmpty]: Start isEmpty. Operand 10898 states and 13989 transitions. [2020-10-26 23:44:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-26 23:44:19,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:19,707 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-10-26 23:44:19,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:44:19,708 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:19,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:19,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1052086652, now seen corresponding path program 1 times [2020-10-26 23:44:19,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:19,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781293530] [2020-10-26 23:44:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:19,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:20,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:20,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:20,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:21,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:22,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:24,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:24,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 497 [2020-10-26 23:44:24,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:44:24,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:44:24,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:44:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 23:44:24,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:24,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:24,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:24,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:24,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:24,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:24,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:44:24,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:24,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:24,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:25,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:25,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:25,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:25,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:44:25,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:25,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:44:25,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:25,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:44:25,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:25,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:44:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:25,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:25,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:25,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:44:25,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:25,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-26 23:44:25,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:25,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:44:25,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:25,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:44:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:25,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:25,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:25,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:44:25,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:25,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:44:25,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:44:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:25,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:25,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-26 23:44:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:25,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:25,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:25,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:44:25,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:25,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:44:25,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:44:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:25,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 180 proven. 152 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-26 23:44:26,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781293530] [2020-10-26 23:44:26,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:26,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:44:26,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940695566] [2020-10-26 23:44:26,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:26,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:26,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:26,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:26,017 INFO L87 Difference]: Start difference. First operand 10898 states and 13989 transitions. Second operand 7 states. [2020-10-26 23:44:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:40,539 INFO L93 Difference]: Finished difference Result 23486 states and 31950 transitions. [2020-10-26 23:44:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:44:40,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 479 [2020-10-26 23:44:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:40,598 INFO L225 Difference]: With dead ends: 23486 [2020-10-26 23:44:40,598 INFO L226 Difference]: Without dead ends: 13514 [2020-10-26 23:44:40,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:44:40,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13514 states. [2020-10-26 23:44:40,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13514 to 13438. [2020-10-26 23:44:40,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13438 states. [2020-10-26 23:44:40,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13438 states to 13438 states and 17064 transitions. [2020-10-26 23:44:40,992 INFO L78 Accepts]: Start accepts. Automaton has 13438 states and 17064 transitions. Word has length 479 [2020-10-26 23:44:40,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:40,993 INFO L481 AbstractCegarLoop]: Abstraction has 13438 states and 17064 transitions. [2020-10-26 23:44:40,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:44:40,993 INFO L276 IsEmpty]: Start isEmpty. Operand 13438 states and 17064 transitions. [2020-10-26 23:44:41,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-26 23:44:41,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:41,001 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:41,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:44:41,002 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:41,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:41,002 INFO L82 PathProgramCache]: Analyzing trace with hash -2073745691, now seen corresponding path program 1 times [2020-10-26 23:44:41,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:41,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577764165] [2020-10-26 23:44:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:41,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:41,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:42,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:43,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:43,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-26 23:44:43,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:44:43,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2759 [2020-10-26 23:44:43,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:43,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:43,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:44:43,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:44:43,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:44,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:44,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:44,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:44,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:44,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:44:44,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:44,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:44,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:44,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:44:44,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:44,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 23:44:44,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:44,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:44,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:44:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:44,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:44,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:44,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:44:44,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:44,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:44:44,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:44,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:44,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:44,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:44:44,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:44,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:44:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:44,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:44,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:44:44,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:44,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:44:44,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:44:44,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:44:44,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577764165] [2020-10-26 23:44:44,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:44,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:44:44,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934348444] [2020-10-26 23:44:44,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:44,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:44,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:44,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:44,776 INFO L87 Difference]: Start difference. First operand 13438 states and 17064 transitions. Second operand 7 states. [2020-10-26 23:44:50,012 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:44:57,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:57,034 INFO L93 Difference]: Finished difference Result 26605 states and 35661 transitions. [2020-10-26 23:44:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:44:57,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 501 [2020-10-26 23:44:57,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:57,091 INFO L225 Difference]: With dead ends: 26605 [2020-10-26 23:44:57,091 INFO L226 Difference]: Without dead ends: 16588 [2020-10-26 23:44:57,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:44:57,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16588 states. [2020-10-26 23:44:57,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16588 to 15958. [2020-10-26 23:44:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15958 states. [2020-10-26 23:44:57,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15958 states to 15958 states and 20465 transitions. [2020-10-26 23:44:57,504 INFO L78 Accepts]: Start accepts. Automaton has 15958 states and 20465 transitions. Word has length 501 [2020-10-26 23:44:57,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:57,505 INFO L481 AbstractCegarLoop]: Abstraction has 15958 states and 20465 transitions. [2020-10-26 23:44:57,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:44:57,506 INFO L276 IsEmpty]: Start isEmpty. Operand 15958 states and 20465 transitions. [2020-10-26 23:44:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-26 23:44:57,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:57,516 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:57,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:44:57,516 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:57,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:57,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1474751609, now seen corresponding path program 1 times [2020-10-26 23:44:57,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:57,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699215474] [2020-10-26 23:44:57,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:00,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:00,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-26 23:45:00,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:45:00,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2772 [2020-10-26 23:45:00,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:45:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 23:45:00,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:00,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:00,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:00,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:00,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:00,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:00,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:45:00,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:00,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:00,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:00,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:00,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:00,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:00,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:00,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:45:00,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:00,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 23:45:00,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:00,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:00,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:45:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:00,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:00,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:00,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:00,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:00,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:45:00,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:00,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:00,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:00,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:45:00,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:00,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:45:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:01,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:01,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:01,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-26 23:45:01,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-26 23:45:01,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 23:45:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:45:01,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699215474] [2020-10-26 23:45:01,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:01,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:45:01,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907805858] [2020-10-26 23:45:01,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:01,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:01,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:01,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:01,495 INFO L87 Difference]: Start difference. First operand 15958 states and 20465 transitions. Second operand 7 states. [2020-10-26 23:45:15,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:15,401 INFO L93 Difference]: Finished difference Result 31347 states and 40483 transitions. [2020-10-26 23:45:15,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:45:15,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 549 [2020-10-26 23:45:15,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:15,453 INFO L225 Difference]: With dead ends: 31347 [2020-10-26 23:45:15,453 INFO L226 Difference]: Without dead ends: 16011 [2020-10-26 23:45:15,479 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 [2020-10-26 23:45:15,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16011 states. [2020-10-26 23:45:15,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16011 to 15991. [2020-10-26 23:45:15,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15991 states. [2020-10-26 23:45:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15991 states to 15991 states and 19143 transitions. [2020-10-26 23:45:15,832 INFO L78 Accepts]: Start accepts. Automaton has 15991 states and 19143 transitions. Word has length 549 [2020-10-26 23:45:15,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:15,834 INFO L481 AbstractCegarLoop]: Abstraction has 15991 states and 19143 transitions. [2020-10-26 23:45:15,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:45:15,834 INFO L276 IsEmpty]: Start isEmpty. Operand 15991 states and 19143 transitions. [2020-10-26 23:45:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2020-10-26 23:45:15,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:15,845 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:15,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:45:15,846 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:15,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:15,847 INFO L82 PathProgramCache]: Analyzing trace with hash -983493671, now seen corresponding path program 1 times [2020-10-26 23:45:15,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:15,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289307209] [2020-10-26 23:45:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:16,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:16,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:17,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:17,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:21,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:21,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 583 [2020-10-26 23:45:21,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:45:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-26 23:45:21,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:45:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:45:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 574 [2020-10-26 23:45:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:21,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:21,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:21,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:21,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:21,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:45:21,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:45:21,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:21,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:21,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:21,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:21,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:45:21,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:21,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-26 23:45:21,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:21,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:21,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:21,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-26 23:45:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:21,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:45:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:21,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:21,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:21,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:21,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:45:21,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:45:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:45:21,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:22,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:45:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:22,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:22,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:22,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:22,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 23:45:22,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:45:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-26 23:45:22,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:45:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-26 23:45:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:23,016 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 18 proven. 294 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:45:23,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289307209] [2020-10-26 23:45:23,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:23,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:45:23,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931058255] [2020-10-26 23:45:23,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:45:23,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:23,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:45:23,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:45:23,023 INFO L87 Difference]: Start difference. First operand 15991 states and 19143 transitions. Second operand 11 states.