/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/Problem18_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:24:28,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:24:28,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:24:28,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:24:28,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:24:28,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:24:28,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:24:28,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:24:28,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:24:28,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:24:28,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:24:28,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:24:28,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:24:28,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:24:28,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:24:28,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:24:28,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:24:28,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:24:28,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:24:28,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:24:28,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:24:28,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:24:28,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:24:28,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:24:28,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:24:28,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:24:28,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:24:28,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:24:28,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:24:28,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:24:28,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:24:28,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:24:28,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:24:28,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:24:28,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:24:28,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:24:28,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:24:28,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:24:28,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:24:28,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:24:28,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:24:28,815 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 [2020-10-27 00:24:28,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:24:28,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:24:28,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:24:28,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:24:28,869 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:24:28,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:24:28,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:24:28,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:24:28,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:24:28,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:24:28,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:24:28,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:24:28,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:24:28,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:24:28,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:24:28,872 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:24:28,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:24:28,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:24:28,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:24:28,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:24:28,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:24:28,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:24:28,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:24:28,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:24:28,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:24:28,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:24:28,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:24:28,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:24:28,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:24:28,875 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:24:29,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:24:29,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:24:29,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:24:29,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:24:29,304 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:24:29,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label10.c [2020-10-27 00:24:29,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9db62ed88/392ac1cd188c41d889625f0d109adfea/FLAGc4fde6a37 [2020-10-27 00:24:30,498 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:24:30,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label10.c [2020-10-27 00:24:30,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9db62ed88/392ac1cd188c41d889625f0d109adfea/FLAGc4fde6a37 [2020-10-27 00:24:31,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9db62ed88/392ac1cd188c41d889625f0d109adfea [2020-10-27 00:24:31,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:24:31,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:24:31,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:24:31,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:24:31,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:24:31,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:24:31" (1/1) ... [2020-10-27 00:24:31,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a7665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:24:31, skipping insertion in model container [2020-10-27 00:24:31,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:24:31" (1/1) ... [2020-10-27 00:24:31,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:24:31,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:24:32,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:24:32,431 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:24:32,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:24:32,969 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:24:32,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:24:32 WrapperNode [2020-10-27 00:24:32,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:24:32,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:24:32,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:24:32,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:24:32,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:24:32" (1/1) ... [2020-10-27 00:24:32,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:24:32" (1/1) ... [2020-10-27 00:24:33,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:24:32" (1/1) ... [2020-10-27 00:24:33,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:24:32" (1/1) ... [2020-10-27 00:24:33,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:24:32" (1/1) ... [2020-10-27 00:24:33,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:24:32" (1/1) ... [2020-10-27 00:24:33,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:24:32" (1/1) ... [2020-10-27 00:24:33,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:24:33,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:24:33,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:24:33,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:24:33,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:24:32" (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 [2020-10-27 00:24:33,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:24:33,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:24:33,427 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:24:33,427 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:24:33,427 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:24:33,428 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:24:33,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:24:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:24:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:24:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:24:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:24:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:24:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:24:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:24:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:24:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:24:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:24:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:24:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:24:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:24:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:24:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:24:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:24:37,988 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:24:37,988 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:24:37,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:24:37 BoogieIcfgContainer [2020-10-27 00:24:37,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:24:37,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:24:37,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:24:37,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:24:37,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:24:31" (1/3) ... [2020-10-27 00:24:37,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179ae1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:24:37, skipping insertion in model container [2020-10-27 00:24:37,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:24:32" (2/3) ... [2020-10-27 00:24:37,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179ae1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:24:37, skipping insertion in model container [2020-10-27 00:24:38,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:24:37" (3/3) ... [2020-10-27 00:24:38,001 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label10.c [2020-10-27 00:24:38,015 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:24:38,021 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:24:38,036 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:24:38,123 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:24:38,123 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:24:38,123 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:24:38,123 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:24:38,124 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:24:38,124 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:24:38,124 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:24:38,124 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:24:38,173 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:24:38,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 00:24:38,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:24:38,188 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] [2020-10-27 00:24:38,189 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:24:38,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:24:38,198 INFO L82 PathProgramCache]: Analyzing trace with hash 2060912224, now seen corresponding path program 1 times [2020-10-27 00:24:38,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:24:38,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095671581] [2020-10-27 00:24:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:24:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:38,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:38,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:38,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 00:24:38,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:38,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-27 00:24:38,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:24:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:24:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 00:24:38,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:24:39,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:24:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:39,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:39,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:39,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:24:39,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:39,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:24:39,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:24:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:24:39,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:24:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:24:39,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095671581] [2020-10-27 00:24:39,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:24:39,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:24:39,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763828002] [2020-10-27 00:24:39,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:24:39,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:24:39,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:24:39,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:24:39,157 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:24:55,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:24:55,213 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-27 00:24:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:24:55,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-27 00:24:55,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:24:55,254 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:24:55,256 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:24:55,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:24:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:24:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 00:24:55,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 00:24:55,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3565 transitions. [2020-10-27 00:24:55,489 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3565 transitions. Word has length 25 [2020-10-27 00:24:55,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:24:55,490 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3565 transitions. [2020-10-27 00:24:55,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:24:55,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3565 transitions. [2020-10-27 00:24:55,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 00:24:55,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:24:55,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:24:55,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:24:55,499 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:24:55,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:24:55,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1843820071, now seen corresponding path program 1 times [2020-10-27 00:24:55,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:24:55,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511334624] [2020-10-27 00:24:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:24:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:55,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:55,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:56,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 00:24:56,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:24:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 864 [2020-10-27 00:24:56,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:24:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:24:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:24:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:24:56,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:24:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:56,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:56,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:56,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:24:56,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:56,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:24:56,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:24:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:24:56,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:56,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:24:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:56,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:56,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:24:56,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:56,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 00:24:56,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:56,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:56,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:24:56,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:24:56,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:24:56,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511334624] [2020-10-27 00:24:56,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:24:56,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:24:56,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289361576] [2020-10-27 00:24:56,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:24:56,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:24:56,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:24:56,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:24:56,786 INFO L87 Difference]: Start difference. First operand 2136 states and 3565 transitions. Second operand 7 states. [2020-10-27 00:25:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:25:12,355 INFO L93 Difference]: Finished difference Result 6504 states and 11001 transitions. [2020-10-27 00:25:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:25:12,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-27 00:25:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:25:12,397 INFO L225 Difference]: With dead ends: 6504 [2020-10-27 00:25:12,397 INFO L226 Difference]: Without dead ends: 4374 [2020-10-27 00:25:12,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:25:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2020-10-27 00:25:12,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 4313. [2020-10-27 00:25:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4313 states. [2020-10-27 00:25:12,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4313 states to 4313 states and 6301 transitions. [2020-10-27 00:25:12,568 INFO L78 Accepts]: Start accepts. Automaton has 4313 states and 6301 transitions. Word has length 95 [2020-10-27 00:25:12,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:25:12,569 INFO L481 AbstractCegarLoop]: Abstraction has 4313 states and 6301 transitions. [2020-10-27 00:25:12,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:25:12,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4313 states and 6301 transitions. [2020-10-27 00:25:12,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 00:25:12,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:25:12,579 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:25:12,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:25:12,580 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:25:12,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:25:12,580 INFO L82 PathProgramCache]: Analyzing trace with hash -246924358, now seen corresponding path program 1 times [2020-10-27 00:25:12,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:25:12,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54147664] [2020-10-27 00:25:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:25:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:15,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:15,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 00:25:15,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:25:15,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2646 [2020-10-27 00:25:15,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:15,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:25:15,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:25:15,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 00:25:15,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:25:15,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:25:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:15,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:15,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:15,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:25:15,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:15,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:25:15,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:25:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:25:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:25:15,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:15,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:25:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:15,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:15,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:15,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:25:15,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:15,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 00:25:15,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:25:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:25:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:25:15,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:15,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 00:25:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:15,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:15,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:15,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:25:15,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:15,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:25:15,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:25:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 00:25:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:25:15,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 34 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:25:15,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54147664] [2020-10-27 00:25:15,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:25:15,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:25:15,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467906499] [2020-10-27 00:25:15,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:25:15,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:25:15,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:25:15,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:25:15,803 INFO L87 Difference]: Start difference. First operand 4313 states and 6301 transitions. Second operand 7 states. [2020-10-27 00:25:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:25:27,820 INFO L93 Difference]: Finished difference Result 13082 states and 19501 transitions. [2020-10-27 00:25:27,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:25:27,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-27 00:25:27,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:25:27,873 INFO L225 Difference]: With dead ends: 13082 [2020-10-27 00:25:27,873 INFO L226 Difference]: Without dead ends: 8775 [2020-10-27 00:25:27,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:25:27,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8775 states. [2020-10-27 00:25:28,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8775 to 6607. [2020-10-27 00:25:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6607 states. [2020-10-27 00:25:28,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6607 states to 6607 states and 9074 transitions. [2020-10-27 00:25:28,131 INFO L78 Accepts]: Start accepts. Automaton has 6607 states and 9074 transitions. Word has length 164 [2020-10-27 00:25:28,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:25:28,132 INFO L481 AbstractCegarLoop]: Abstraction has 6607 states and 9074 transitions. [2020-10-27 00:25:28,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:25:28,132 INFO L276 IsEmpty]: Start isEmpty. Operand 6607 states and 9074 transitions. [2020-10-27 00:25:28,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-27 00:25:28,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:25:28,140 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:25:28,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:25:28,141 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:25:28,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:25:28,147 INFO L82 PathProgramCache]: Analyzing trace with hash -549143224, now seen corresponding path program 1 times [2020-10-27 00:25:28,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:25:28,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511347970] [2020-10-27 00:25:28,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:25:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:28,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:29,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:31,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:31,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 00:25:31,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:25:31,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3280 [2020-10-27 00:25:31,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:25:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:25:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:25:31,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:31,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:25:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:31,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:31,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:31,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:25:31,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:31,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:25:31,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:31,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:25:31,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:25:31,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:25:31,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:31,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:25:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:31,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:31,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:31,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:25:31,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:31,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-27 00:25:31,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:25:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:25:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:25:31,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:32,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:25:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:32,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:32,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:32,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:25:32,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:25:32,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:25:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:25:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:25:32,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 34 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:25:32,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511347970] [2020-10-27 00:25:32,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:25:32,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:25:32,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090315732] [2020-10-27 00:25:32,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:25:32,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:25:32,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:25:32,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:25:32,478 INFO L87 Difference]: Start difference. First operand 6607 states and 9074 transitions. Second operand 7 states. [2020-10-27 00:25:43,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:25:43,293 INFO L93 Difference]: Finished difference Result 14107 states and 19232 transitions. [2020-10-27 00:25:43,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:25:43,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-27 00:25:43,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:25:43,332 INFO L225 Difference]: With dead ends: 14107 [2020-10-27 00:25:43,332 INFO L226 Difference]: Without dead ends: 7506 [2020-10-27 00:25:43,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:25:43,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7506 states. [2020-10-27 00:25:43,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7506 to 7377. [2020-10-27 00:25:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7377 states. [2020-10-27 00:25:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7377 states to 7377 states and 9911 transitions. [2020-10-27 00:25:43,595 INFO L78 Accepts]: Start accepts. Automaton has 7377 states and 9911 transitions. Word has length 220 [2020-10-27 00:25:43,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:25:43,597 INFO L481 AbstractCegarLoop]: Abstraction has 7377 states and 9911 transitions. [2020-10-27 00:25:43,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:25:43,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7377 states and 9911 transitions. [2020-10-27 00:25:43,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-27 00:25:43,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:25:43,606 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:25:43,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:25:43,607 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:25:43,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:25:43,609 INFO L82 PathProgramCache]: Analyzing trace with hash 612726855, now seen corresponding path program 1 times [2020-10-27 00:25:43,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:25:43,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228552540] [2020-10-27 00:25:43,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:25:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:43,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:43,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:44,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:47,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:47,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-27 00:25:47,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:25:47,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4196 [2020-10-27 00:25:47,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:47,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:25:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:25:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:25:47,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:48,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:25:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:48,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:48,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:48,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:25:48,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:48,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:25:48,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:25:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:25:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:25:48,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:25:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:25:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:48,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:48,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:48,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:25:48,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:48,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 00:25:48,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:48,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:25:48,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:25:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:25:48,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:25:48,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:25:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:48,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:48,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:48,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:25:48,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:25:48,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-27 00:25:48,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:48,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:25:48,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:25:48,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:25:48,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:49,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:25:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:49,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:49,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:49,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:25:49,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:49,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:25:49,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:25:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:25:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:25:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:49,522 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 174 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 00:25:49,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228552540] [2020-10-27 00:25:49,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:25:49,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:25:49,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707784899] [2020-10-27 00:25:49,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 00:25:49,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:25:49,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 00:25:49,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:25:49,525 INFO L87 Difference]: Start difference. First operand 7377 states and 9911 transitions. Second operand 6 states. [2020-10-27 00:26:00,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:26:00,865 INFO L93 Difference]: Finished difference Result 14274 states and 19409 transitions. [2020-10-27 00:26:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:26:00,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 406 [2020-10-27 00:26:00,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:26:00,908 INFO L225 Difference]: With dead ends: 14274 [2020-10-27 00:26:00,908 INFO L226 Difference]: Without dead ends: 7417 [2020-10-27 00:26:00,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:26:00,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7417 states. [2020-10-27 00:26:01,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7417 to 7345. [2020-10-27 00:26:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7345 states. [2020-10-27 00:26:01,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7345 states to 7345 states and 8816 transitions. [2020-10-27 00:26:01,122 INFO L78 Accepts]: Start accepts. Automaton has 7345 states and 8816 transitions. Word has length 406 [2020-10-27 00:26:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:26:01,123 INFO L481 AbstractCegarLoop]: Abstraction has 7345 states and 8816 transitions. [2020-10-27 00:26:01,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 00:26:01,123 INFO L276 IsEmpty]: Start isEmpty. Operand 7345 states and 8816 transitions. [2020-10-27 00:26:01,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-27 00:26:01,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:26:01,133 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:26:01,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:26:01,133 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:26:01,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:26:01,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1585419146, now seen corresponding path program 1 times [2020-10-27 00:26:01,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:26:01,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606532769] [2020-10-27 00:26:01,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:26:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:01,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:01,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:02,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:06,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:06,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-27 00:26:06,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:26:06,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 00:26:06,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:26:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:26:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:26:06,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:06,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:26:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:06,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:06,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:06,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:26:06,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:06,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:26:06,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:06,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:26:06,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:06,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:26:06,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:06,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:26:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:06,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:07,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:07,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:26:07,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:07,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-27 00:26:07,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:26:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:26:07,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:07,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:26:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:07,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:07,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:07,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:26:07,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:07,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 00:26:07,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:26:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:26:07,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:07,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:26:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:07,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:07,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:07,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:26:07,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:07,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:26:07,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:26:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 00:26:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:26:07,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 34 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:26:08,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606532769] [2020-10-27 00:26:08,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:26:08,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:26:08,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601877623] [2020-10-27 00:26:08,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:26:08,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:26:08,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:26:08,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:26:08,084 INFO L87 Difference]: Start difference. First operand 7345 states and 8816 transitions. Second operand 8 states. [2020-10-27 00:26:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:26:27,491 INFO L93 Difference]: Finished difference Result 26141 states and 34775 transitions. [2020-10-27 00:26:27,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 00:26:27,493 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 429 [2020-10-27 00:26:27,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:26:27,566 INFO L225 Difference]: With dead ends: 26141 [2020-10-27 00:26:27,566 INFO L226 Difference]: Without dead ends: 19504 [2020-10-27 00:26:27,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-27 00:26:27,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19504 states. [2020-10-27 00:26:28,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19504 to 18645. [2020-10-27 00:26:28,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18645 states. [2020-10-27 00:26:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18645 states to 18645 states and 23136 transitions. [2020-10-27 00:26:28,183 INFO L78 Accepts]: Start accepts. Automaton has 18645 states and 23136 transitions. Word has length 429 [2020-10-27 00:26:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:26:28,184 INFO L481 AbstractCegarLoop]: Abstraction has 18645 states and 23136 transitions. [2020-10-27 00:26:28,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:26:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 18645 states and 23136 transitions. [2020-10-27 00:26:28,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2020-10-27 00:26:28,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:26:28,221 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:26:28,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:26:28,222 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:26:28,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:26:28,223 INFO L82 PathProgramCache]: Analyzing trace with hash 593131019, now seen corresponding path program 1 times [2020-10-27 00:26:28,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:26:28,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044229386] [2020-10-27 00:26:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:26:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:33,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:33,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 978 [2020-10-27 00:26:33,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:26:33,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-27 00:26:33,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:26:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:26:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:26:33,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:33,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:26:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:33,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:33,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:33,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:26:33,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:33,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:26:33,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:26:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:26:33,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:33,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:26:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:33,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:34,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:34,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:26:34,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:34,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-27 00:26:34,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:26:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:26:34,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:34,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:26:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:34,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:34,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:34,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:26:34,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:34,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:26:34,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:26:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:26:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:34,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:26:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:34,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:34,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:34,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:26:34,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:26:34,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:26:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:26:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:34,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:26:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:34,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:35,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:35,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:26:35,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:35,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-27 00:26:35,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:35,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:26:35,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:35,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:26:35,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:35,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:26:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:35,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:35,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:35,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:26:35,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:35,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:26:35,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:26:35,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:35,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:26:35,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:35,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:26:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:35,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:35,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:35,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:26:35,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:35,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 00:26:35,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:26:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:26:35,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:26:36,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044229386] [2020-10-27 00:26:36,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:26:36,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:26:36,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438879983] [2020-10-27 00:26:36,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:26:36,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:26:36,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:26:36,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:26:36,019 INFO L87 Difference]: Start difference. First operand 18645 states and 23136 transitions. Second operand 7 states. [2020-10-27 00:26:50,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:26:50,073 INFO L93 Difference]: Finished difference Result 47019 states and 60810 transitions. [2020-10-27 00:26:50,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:26:50,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 956 [2020-10-27 00:26:50,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:26:50,179 INFO L225 Difference]: With dead ends: 47019 [2020-10-27 00:26:50,179 INFO L226 Difference]: Without dead ends: 29792 [2020-10-27 00:26:50,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:26:50,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29792 states. [2020-10-27 00:26:50,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29792 to 28997. [2020-10-27 00:26:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28997 states. [2020-10-27 00:26:50,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28997 states to 28997 states and 35925 transitions. [2020-10-27 00:26:50,947 INFO L78 Accepts]: Start accepts. Automaton has 28997 states and 35925 transitions. Word has length 956 [2020-10-27 00:26:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:26:50,949 INFO L481 AbstractCegarLoop]: Abstraction has 28997 states and 35925 transitions. [2020-10-27 00:26:50,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:26:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 28997 states and 35925 transitions. [2020-10-27 00:26:50,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2020-10-27 00:26:50,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:26:50,994 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:26:50,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:26:50,994 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:26:50,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:26:50,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1636377465, now seen corresponding path program 1 times [2020-10-27 00:26:50,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:26:50,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201932753] [2020-10-27 00:26:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:26:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:51,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:51,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:52,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:55,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:56,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:56,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-27 00:26:56,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:26:56,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-27 00:26:56,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 00:26:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:26:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 952 [2020-10-27 00:26:56,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:56,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:26:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:56,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:56,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:56,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:26:56,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:26:56,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:26:56,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:56,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:26:56,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:56,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:26:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:56,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:57,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:58,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:58,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:26:58,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:26:58,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1377 [2020-10-27 00:26:58,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:26:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 532 [2020-10-27 00:26:58,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:58,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:26:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:58,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:58,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:58,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:26:58,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-27 00:26:58,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:26:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-27 00:26:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:58,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:26:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:58,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:58,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:58,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:26:58,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:58,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:26:58,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:58,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:26:58,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:58,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 00:26:58,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:58,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:26:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:59,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:59,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:59,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:59,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:26:59,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:26:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-27 00:26:59,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:26:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:26:59,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:59,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:26:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:59,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:59,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:59,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:26:59,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:26:59,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:26:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:26:59,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:59,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:26:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:59,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:59,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:59,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 00:26:59,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 00:26:59,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:26:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:26:59,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 53 proven. 4 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2020-10-27 00:27:00,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201932753] [2020-10-27 00:27:00,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:27:00,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:27:00,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251142526] [2020-10-27 00:27:00,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:27:00,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:00,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:27:00,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:27:00,766 INFO L87 Difference]: Start difference. First operand 28997 states and 35925 transitions. Second operand 7 states. [2020-10-27 00:27:10,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:10,563 INFO L93 Difference]: Finished difference Result 63859 states and 79320 transitions. [2020-10-27 00:27:10,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:27:10,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 961 [2020-10-27 00:27:10,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:10,675 INFO L225 Difference]: With dead ends: 63859 [2020-10-27 00:27:10,675 INFO L226 Difference]: Without dead ends: 36280 [2020-10-27 00:27:10,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:27:10,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-27 00:27:11,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 34769. [2020-10-27 00:27:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34769 states. [2020-10-27 00:27:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34769 states to 34769 states and 41052 transitions. [2020-10-27 00:27:11,761 INFO L78 Accepts]: Start accepts. Automaton has 34769 states and 41052 transitions. Word has length 961 [2020-10-27 00:27:11,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:11,767 INFO L481 AbstractCegarLoop]: Abstraction has 34769 states and 41052 transitions. [2020-10-27 00:27:11,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:27:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 34769 states and 41052 transitions. [2020-10-27 00:27:11,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2020-10-27 00:27:11,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:11,786 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:27:11,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:27:11,786 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:11,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:11,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1466112536, now seen corresponding path program 1 times [2020-10-27 00:27:11,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:11,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075084924] [2020-10-27 00:27:11,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:12,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:16,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:16,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 985 [2020-10-27 00:27:16,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:27:16,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4301 [2020-10-27 00:27:16,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:16,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:16,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-27 00:27:16,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:27:16,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:16,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:27:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:16,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:16,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:16,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:27:16,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:16,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:27:16,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:16,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:16,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:27:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:16,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:16,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:16,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:27:16,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:16,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 00:27:16,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:16,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:16,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:16,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:16,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:16,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:27:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:16,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:16,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:16,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:27:16,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:16,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:27:16,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:16,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:16,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:27:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:16,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:16,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:16,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:27:16,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:16,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:27:16,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:16,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:17,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:27:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:17,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:17,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:17,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 00:27:17,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:17,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 00:27:17,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-27 00:27:17,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:17,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:27:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:17,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:17,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:17,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:27:17,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:17,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:27:17,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 00:27:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:17,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-27 00:27:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:17,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:17,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:17,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:27:17,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:17,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:27:17,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:27:17,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-27 00:27:18,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075084924] [2020-10-27 00:27:18,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:27:18,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:27:18,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704657338] [2020-10-27 00:27:18,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:27:18,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:18,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:27:18,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:27:18,165 INFO L87 Difference]: Start difference. First operand 34769 states and 41052 transitions. Second operand 7 states. [2020-10-27 00:27:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:36,760 INFO L93 Difference]: Finished difference Result 85472 states and 104153 transitions. [2020-10-27 00:27:36,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:27:36,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 963 [2020-10-27 00:27:36,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:36,914 INFO L225 Difference]: With dead ends: 85472 [2020-10-27 00:27:36,914 INFO L226 Difference]: Without dead ends: 52121 [2020-10-27 00:27:37,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:27:37,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52121 states. [2020-10-27 00:27:38,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52121 to 51344. [2020-10-27 00:27:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51344 states. [2020-10-27 00:27:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51344 states to 51344 states and 59469 transitions. [2020-10-27 00:27:38,633 INFO L78 Accepts]: Start accepts. Automaton has 51344 states and 59469 transitions. Word has length 963 [2020-10-27 00:27:38,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:38,635 INFO L481 AbstractCegarLoop]: Abstraction has 51344 states and 59469 transitions. [2020-10-27 00:27:38,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:27:38,635 INFO L276 IsEmpty]: Start isEmpty. Operand 51344 states and 59469 transitions. [2020-10-27 00:27:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2020-10-27 00:27:38,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:38,651 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:27:38,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:27:38,652 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:38,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:38,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1972491431, now seen corresponding path program 1 times [2020-10-27 00:27:38,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:38,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091763200] [2020-10-27 00:27:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:39,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:42,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:42,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 999 [2020-10-27 00:27:42,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:27:42,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3892 [2020-10-27 00:27:42,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:27:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 00:27:42,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:43,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:27:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:43,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:43,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:43,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:27:43,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:43,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:27:43,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:43,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:43,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:43,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:27:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:43,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:43,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:43,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:27:43,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:43,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 00:27:43,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:43,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:43,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:27:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:43,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:43,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:43,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:27:43,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:43,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 00:27:43,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:43,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:43,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:27:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:43,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:43,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:43,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:27:43,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:43,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:27:43,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:43,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:43,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:27:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:43,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:44,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:44,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:27:44,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 00:27:44,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:27:44,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:44,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:27:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:44,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:44,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:44,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:27:44,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:27:44,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:27:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:44,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:27:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:44,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:44,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 00:27:44,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:44,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 00:27:44,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:44,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:44,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:44,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 00:27:44,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:27:45,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091763200] [2020-10-27 00:27:45,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:27:45,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:27:45,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224189486] [2020-10-27 00:27:45,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:27:45,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:45,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:27:45,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:27:45,308 INFO L87 Difference]: Start difference. First operand 51344 states and 59469 transitions. Second operand 7 states. [2020-10-27 00:27:59,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:59,594 INFO L93 Difference]: Finished difference Result 113337 states and 134016 transitions. [2020-10-27 00:27:59,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:27:59,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 977 [2020-10-27 00:27:59,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:59,983 INFO L225 Difference]: With dead ends: 113337 [2020-10-27 00:27:59,984 INFO L226 Difference]: Without dead ends: 63411 [2020-10-27 00:28:00,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:28:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63411 states. [2020-10-27 00:28:01,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63411 to 61944. [2020-10-27 00:28:01,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61944 states. [2020-10-27 00:28:02,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61944 states to 61944 states and 72335 transitions. [2020-10-27 00:28:02,014 INFO L78 Accepts]: Start accepts. Automaton has 61944 states and 72335 transitions. Word has length 977 [2020-10-27 00:28:02,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:02,015 INFO L481 AbstractCegarLoop]: Abstraction has 61944 states and 72335 transitions. [2020-10-27 00:28:02,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:28:02,015 INFO L276 IsEmpty]: Start isEmpty. Operand 61944 states and 72335 transitions. [2020-10-27 00:28:02,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1100 [2020-10-27 00:28:02,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:02,048 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:02,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:28:02,048 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:02,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:02,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1981312622, now seen corresponding path program 1 times [2020-10-27 00:28:02,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:02,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523184724] [2020-10-27 00:28:02,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat