/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=DEEPEST --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/locks/test_locks_8.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:10:35,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:10:35,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:10:35,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:10:35,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:10:35,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:10:35,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:10:35,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:10:35,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:10:35,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:10:35,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:10:35,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:10:35,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:10:35,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:10:35,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:10:35,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:10:35,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:10:35,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:10:35,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:10:35,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:10:35,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:10:35,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:10:35,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:10:35,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:10:35,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:10:35,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:10:35,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:10:35,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:10:35,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:10:35,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:10:35,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:10:35,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:10:35,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:10:35,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:10:35,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:10:35,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:10:35,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:10:35,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:10:35,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:10:35,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:10:35,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:10:35,809 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 20:10:35,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:10:35,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:10:35,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:10:35,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:10:35,868 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:10:35,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:10:35,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:10:35,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:10:35,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:10:35,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:10:35,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:10:35,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:10:35,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:10:35,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:10:35,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:10:35,872 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:10:35,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:10:35,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:10:35,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:10:35,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:10:35,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:10:35,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:10:35,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:10:35,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:10:35,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:10:35,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:10:35,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:10:35,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:10:35,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:10:35,876 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:10:36,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:10:36,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:10:36,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:10:36,362 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:10:36,363 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:10:36,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_8.c [2020-10-27 20:10:36,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16d894ce1/7f6fb5f3a4bf480e99c514805cf55140/FLAGe2253749a [2020-10-27 20:10:37,109 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:10:37,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_8.c [2020-10-27 20:10:37,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16d894ce1/7f6fb5f3a4bf480e99c514805cf55140/FLAGe2253749a [2020-10-27 20:10:37,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16d894ce1/7f6fb5f3a4bf480e99c514805cf55140 [2020-10-27 20:10:37,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:10:37,495 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:10:37,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:10:37,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:10:37,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:10:37,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:10:37" (1/1) ... [2020-10-27 20:10:37,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e943c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:37, skipping insertion in model container [2020-10-27 20:10:37,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:10:37" (1/1) ... [2020-10-27 20:10:37,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:10:37,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:10:37,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:10:37,815 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:10:37,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:10:37,860 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:10:37,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:37 WrapperNode [2020-10-27 20:10:37,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:10:37,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:10:37,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:10:37,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:10:37,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:37" (1/1) ... [2020-10-27 20:10:37,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:37" (1/1) ... [2020-10-27 20:10:37,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:37" (1/1) ... [2020-10-27 20:10:37,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:37" (1/1) ... [2020-10-27 20:10:37,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:37" (1/1) ... [2020-10-27 20:10:37,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:37" (1/1) ... [2020-10-27 20:10:37,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:37" (1/1) ... [2020-10-27 20:10:37,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:10:37,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:10:37,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:10:37,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:10:37,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:37" (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 20:10:37,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:10:37,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:10:37,998 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:10:37,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:10:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:10:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:10:37,999 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:10:37,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:10:38,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 20:10:38,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:10:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:10:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:10:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:10:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:10:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:10:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:10:38,396 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:10:38,397 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 20:10:38,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:10:38 BoogieIcfgContainer [2020-10-27 20:10:38,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:10:38,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:10:38,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:10:38,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:10:38,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:10:37" (1/3) ... [2020-10-27 20:10:38,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621220ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:10:38, skipping insertion in model container [2020-10-27 20:10:38,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:37" (2/3) ... [2020-10-27 20:10:38,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621220ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:10:38, skipping insertion in model container [2020-10-27 20:10:38,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:10:38" (3/3) ... [2020-10-27 20:10:38,410 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2020-10-27 20:10:38,425 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:10:38,431 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:10:38,447 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:10:38,491 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:10:38,491 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:10:38,491 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:10:38,491 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:10:38,492 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:10:38,492 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:10:38,492 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:10:38,492 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:10:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-27 20:10:38,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 20:10:38,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:38,522 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] [2020-10-27 20:10:38,522 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:38,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:38,531 INFO L82 PathProgramCache]: Analyzing trace with hash -2103640679, now seen corresponding path program 1 times [2020-10-27 20:10:38,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:38,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610385665] [2020-10-27 20:10:38,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:38,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:39,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:39,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 20:10:39,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:39,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-27 20:10:39,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:39,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 20:10:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:10:39,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 20:10:39,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:39,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:39,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:39,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:39,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:39,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 20:10:39,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:39,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:39,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:39,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:39,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:39,186 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 20:10:39,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610385665] [2020-10-27 20:10:39,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:39,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:39,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450189074] [2020-10-27 20:10:39,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:39,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:39,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:39,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:39,217 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-10-27 20:10:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:39,516 INFO L93 Difference]: Finished difference Result 80 states and 133 transitions. [2020-10-27 20:10:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:39,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 20:10:39,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:39,531 INFO L225 Difference]: With dead ends: 80 [2020-10-27 20:10:39,531 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 20:10:39,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:39,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 20:10:39,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 44. [2020-10-27 20:10:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 20:10:39,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 75 transitions. [2020-10-27 20:10:39,591 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 75 transitions. Word has length 20 [2020-10-27 20:10:39,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:39,591 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 75 transitions. [2020-10-27 20:10:39,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:39,592 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 75 transitions. [2020-10-27 20:10:39,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 20:10:39,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:39,593 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] [2020-10-27 20:10:39,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:10:39,594 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:39,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:39,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1845475241, now seen corresponding path program 1 times [2020-10-27 20:10:39,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:39,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61966638] [2020-10-27 20:10:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:39,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:39,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:39,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 20:10:39,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:39,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 20:10:39,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 20:10:39,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:10:39,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:10:39,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:39,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:39,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:39,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:39,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:39,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 20:10:39,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:39,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:39,846 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 20:10:39,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61966638] [2020-10-27 20:10:39,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:39,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:39,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612674309] [2020-10-27 20:10:39,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:39,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:39,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:39,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:39,851 INFO L87 Difference]: Start difference. First operand 44 states and 75 transitions. Second operand 4 states. [2020-10-27 20:10:40,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:40,074 INFO L93 Difference]: Finished difference Result 99 states and 175 transitions. [2020-10-27 20:10:40,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:40,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 20:10:40,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:40,076 INFO L225 Difference]: With dead ends: 99 [2020-10-27 20:10:40,076 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 20:10:40,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:40,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 20:10:40,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-27 20:10:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 20:10:40,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 103 transitions. [2020-10-27 20:10:40,091 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 103 transitions. Word has length 20 [2020-10-27 20:10:40,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:40,092 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 103 transitions. [2020-10-27 20:10:40,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:40,092 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 103 transitions. [2020-10-27 20:10:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 20:10:40,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:40,093 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] [2020-10-27 20:10:40,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:10:40,094 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:40,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:40,095 INFO L82 PathProgramCache]: Analyzing trace with hash -781723127, now seen corresponding path program 1 times [2020-10-27 20:10:40,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:40,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303814888] [2020-10-27 20:10:40,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:40,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:40,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:40,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:40,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 20:10:40,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:10:40,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-27 20:10:40,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:10:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:10:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:10:40,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:40,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:40,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:40,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:40,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:40,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:10:40,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:40,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:40,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:40,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:40,433 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 20:10:40,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303814888] [2020-10-27 20:10:40,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:40,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:40,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297282982] [2020-10-27 20:10:40,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:40,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:40,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:40,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:40,439 INFO L87 Difference]: Start difference. First operand 60 states and 103 transitions. Second operand 4 states. [2020-10-27 20:10:40,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:40,687 INFO L93 Difference]: Finished difference Result 164 states and 292 transitions. [2020-10-27 20:10:40,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:40,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-27 20:10:40,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:40,690 INFO L225 Difference]: With dead ends: 164 [2020-10-27 20:10:40,692 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 20:10:40,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:40,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 20:10:40,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-27 20:10:40,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-27 20:10:40,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 190 transitions. [2020-10-27 20:10:40,726 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 190 transitions. Word has length 21 [2020-10-27 20:10:40,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:40,726 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 190 transitions. [2020-10-27 20:10:40,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:40,727 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 190 transitions. [2020-10-27 20:10:40,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 20:10:40,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:40,728 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] [2020-10-27 20:10:40,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:10:40,729 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:40,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:40,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1039888565, now seen corresponding path program 1 times [2020-10-27 20:10:40,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:40,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408775700] [2020-10-27 20:10:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:40,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:40,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:40,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:40,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 20:10:40,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:10:40,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 20:10:40,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:40,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:40,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:10:40,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:10:40,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:40,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:40,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:40,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:40,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:40,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:10:40,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:40,939 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 20:10:40,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408775700] [2020-10-27 20:10:40,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:40,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:40,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916521008] [2020-10-27 20:10:40,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:40,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:40,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:40,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:40,942 INFO L87 Difference]: Start difference. First operand 109 states and 190 transitions. Second operand 4 states. [2020-10-27 20:10:41,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:41,104 INFO L93 Difference]: Finished difference Result 141 states and 245 transitions. [2020-10-27 20:10:41,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:41,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-27 20:10:41,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:41,107 INFO L225 Difference]: With dead ends: 141 [2020-10-27 20:10:41,107 INFO L226 Difference]: Without dead ends: 138 [2020-10-27 20:10:41,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:41,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-27 20:10:41,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 109. [2020-10-27 20:10:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-27 20:10:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 188 transitions. [2020-10-27 20:10:41,121 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 188 transitions. Word has length 21 [2020-10-27 20:10:41,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:41,121 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 188 transitions. [2020-10-27 20:10:41,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:41,122 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 188 transitions. [2020-10-27 20:10:41,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 20:10:41,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:41,123 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] [2020-10-27 20:10:41,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:10:41,124 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:41,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1543025892, now seen corresponding path program 1 times [2020-10-27 20:10:41,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:41,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587465780] [2020-10-27 20:10:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:41,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:41,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:41,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:41,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 20:10:41,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:10:41,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 20:10:41,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 20:10:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:10:41,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:41,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:41,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:41,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:41,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:41,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:10:41,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:41,294 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 20:10:41,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587465780] [2020-10-27 20:10:41,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:41,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:41,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697195837] [2020-10-27 20:10:41,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:41,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:41,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:41,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:41,302 INFO L87 Difference]: Start difference. First operand 109 states and 188 transitions. Second operand 4 states. [2020-10-27 20:10:41,523 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-27 20:10:41,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:41,616 INFO L93 Difference]: Finished difference Result 201 states and 351 transitions. [2020-10-27 20:10:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:41,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-27 20:10:41,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:41,619 INFO L225 Difference]: With dead ends: 201 [2020-10-27 20:10:41,619 INFO L226 Difference]: Without dead ends: 198 [2020-10-27 20:10:41,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:41,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-27 20:10:41,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 149. [2020-10-27 20:10:41,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-27 20:10:41,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 256 transitions. [2020-10-27 20:10:41,637 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 256 transitions. Word has length 22 [2020-10-27 20:10:41,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:41,637 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 256 transitions. [2020-10-27 20:10:41,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:41,637 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 256 transitions. [2020-10-27 20:10:41,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 20:10:41,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:41,641 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] [2020-10-27 20:10:41,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:10:41,641 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:41,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:41,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1801191330, now seen corresponding path program 1 times [2020-10-27 20:10:41,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:41,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099007934] [2020-10-27 20:10:41,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:41,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:41,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:41,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:41,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 20:10:41,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:10:41,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 20:10:41,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:41,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:41,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 20:10:41,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:10:41,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:41,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:41,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:41,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:41,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:41,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:41,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:10:41,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:41,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:41,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:41,824 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 20:10:41,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099007934] [2020-10-27 20:10:41,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:41,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:41,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212310409] [2020-10-27 20:10:41,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:41,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:41,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:41,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:41,827 INFO L87 Difference]: Start difference. First operand 149 states and 256 transitions. Second operand 4 states. [2020-10-27 20:10:42,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:42,009 INFO L93 Difference]: Finished difference Result 349 states and 607 transitions. [2020-10-27 20:10:42,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:42,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-27 20:10:42,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:42,011 INFO L225 Difference]: With dead ends: 349 [2020-10-27 20:10:42,011 INFO L226 Difference]: Without dead ends: 206 [2020-10-27 20:10:42,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:42,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-27 20:10:42,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 205. [2020-10-27 20:10:42,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-27 20:10:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 348 transitions. [2020-10-27 20:10:42,030 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 348 transitions. Word has length 22 [2020-10-27 20:10:42,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:42,030 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 348 transitions. [2020-10-27 20:10:42,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:42,030 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 348 transitions. [2020-10-27 20:10:42,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 20:10:42,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:42,032 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] [2020-10-27 20:10:42,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:10:42,033 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:42,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:42,033 INFO L82 PathProgramCache]: Analyzing trace with hash 595812020, now seen corresponding path program 1 times [2020-10-27 20:10:42,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:42,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198611811] [2020-10-27 20:10:42,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:42,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:42,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:42,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:42,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:42,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 20:10:42,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:10:42,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 20:10:42,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:42,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:42,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 20:10:42,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:10:42,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:42,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:42,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:42,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:42,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:42,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:10:42,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:42,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:42,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:10:42,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198611811] [2020-10-27 20:10:42,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:42,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:42,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761181374] [2020-10-27 20:10:42,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:42,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:42,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:42,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:42,300 INFO L87 Difference]: Start difference. First operand 205 states and 348 transitions. Second operand 4 states. [2020-10-27 20:10:42,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:42,489 INFO L93 Difference]: Finished difference Result 373 states and 639 transitions. [2020-10-27 20:10:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:42,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 20:10:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:42,493 INFO L225 Difference]: With dead ends: 373 [2020-10-27 20:10:42,493 INFO L226 Difference]: Without dead ends: 370 [2020-10-27 20:10:42,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:42,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-10-27 20:10:42,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 289. [2020-10-27 20:10:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-27 20:10:42,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 484 transitions. [2020-10-27 20:10:42,515 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 484 transitions. Word has length 23 [2020-10-27 20:10:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:42,516 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 484 transitions. [2020-10-27 20:10:42,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:42,516 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 484 transitions. [2020-10-27 20:10:42,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 20:10:42,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:42,519 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] [2020-10-27 20:10:42,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:10:42,519 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:42,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:42,520 INFO L82 PathProgramCache]: Analyzing trace with hash 853977458, now seen corresponding path program 1 times [2020-10-27 20:10:42,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:42,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429845706] [2020-10-27 20:10:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:42,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:42,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:42,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:42,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:42,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 20:10:42,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:10:42,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 20:10:42,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:42,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:42,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 20:10:42,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:10:42,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:42,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:42,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:42,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:42,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:42,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:42,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:10:42,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:42,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:42,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:42,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:42,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:42,773 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 20:10:42,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429845706] [2020-10-27 20:10:42,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:42,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:42,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162009103] [2020-10-27 20:10:42,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:42,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:42,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:42,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:42,776 INFO L87 Difference]: Start difference. First operand 289 states and 484 transitions. Second operand 4 states. [2020-10-27 20:10:42,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:42,959 INFO L93 Difference]: Finished difference Result 677 states and 1143 transitions. [2020-10-27 20:10:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:42,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 20:10:42,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:42,962 INFO L225 Difference]: With dead ends: 677 [2020-10-27 20:10:42,963 INFO L226 Difference]: Without dead ends: 394 [2020-10-27 20:10:42,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:42,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-27 20:10:42,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 393. [2020-10-27 20:10:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-27 20:10:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 648 transitions. [2020-10-27 20:10:42,988 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 648 transitions. Word has length 23 [2020-10-27 20:10:42,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:42,988 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 648 transitions. [2020-10-27 20:10:42,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:42,989 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 648 transitions. [2020-10-27 20:10:42,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 20:10:42,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:42,992 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] [2020-10-27 20:10:42,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 20:10:42,992 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:42,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:42,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1296963631, now seen corresponding path program 1 times [2020-10-27 20:10:42,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:42,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446224559] [2020-10-27 20:10:42,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:43,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:43,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:43,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:43,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:43,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:43,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:10:43,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:10:43,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-27 20:10:43,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 20:10:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:10:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:43,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:43,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:43,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:43,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:43,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:43,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:10:43,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:43,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:43,410 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 20:10:43,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446224559] [2020-10-27 20:10:43,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:43,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:43,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975896857] [2020-10-27 20:10:43,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:43,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:43,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:43,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:43,420 INFO L87 Difference]: Start difference. First operand 393 states and 648 transitions. Second operand 4 states. [2020-10-27 20:10:43,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:43,616 INFO L93 Difference]: Finished difference Result 701 states and 1163 transitions. [2020-10-27 20:10:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:43,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-27 20:10:43,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:43,621 INFO L225 Difference]: With dead ends: 701 [2020-10-27 20:10:43,621 INFO L226 Difference]: Without dead ends: 698 [2020-10-27 20:10:43,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:43,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-27 20:10:43,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 569. [2020-10-27 20:10:43,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-10-27 20:10:43,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 920 transitions. [2020-10-27 20:10:43,649 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 920 transitions. Word has length 24 [2020-10-27 20:10:43,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:43,649 INFO L481 AbstractCegarLoop]: Abstraction has 569 states and 920 transitions. [2020-10-27 20:10:43,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:43,649 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 920 transitions. [2020-10-27 20:10:43,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 20:10:43,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:43,653 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] [2020-10-27 20:10:43,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 20:10:43,653 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:43,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:43,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1555129069, now seen corresponding path program 1 times [2020-10-27 20:10:43,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:43,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165679284] [2020-10-27 20:10:43,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:43,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:43,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:43,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:44,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:44,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:10:44,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:10:44,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-27 20:10:44,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 20:10:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:10:44,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:44,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:44,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:44,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:44,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:44,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:10:44,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:44,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:44,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:44,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:44,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:44,077 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 20:10:44,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165679284] [2020-10-27 20:10:44,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:44,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:44,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113362389] [2020-10-27 20:10:44,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:44,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:44,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:44,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:44,079 INFO L87 Difference]: Start difference. First operand 569 states and 920 transitions. Second operand 4 states. [2020-10-27 20:10:44,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:44,276 INFO L93 Difference]: Finished difference Result 1325 states and 2155 transitions. [2020-10-27 20:10:44,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:44,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-27 20:10:44,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:44,281 INFO L225 Difference]: With dead ends: 1325 [2020-10-27 20:10:44,282 INFO L226 Difference]: Without dead ends: 762 [2020-10-27 20:10:44,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-10-27 20:10:44,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 761. [2020-10-27 20:10:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2020-10-27 20:10:44,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1208 transitions. [2020-10-27 20:10:44,326 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1208 transitions. Word has length 24 [2020-10-27 20:10:44,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:44,327 INFO L481 AbstractCegarLoop]: Abstraction has 761 states and 1208 transitions. [2020-10-27 20:10:44,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:44,327 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1208 transitions. [2020-10-27 20:10:44,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 20:10:44,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:44,331 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 20:10:44,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 20:10:44,332 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:44,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:44,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1557837663, now seen corresponding path program 1 times [2020-10-27 20:10:44,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:44,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589476710] [2020-10-27 20:10:44,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:44,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:44,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:44,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:44,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:45,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:45,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 20:10:45,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:10:45,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 716 [2020-10-27 20:10:45,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:45,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 20:10:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:10:45,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:45,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:45,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:45,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:45,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:45,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:45,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:10:45,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:45,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:45,129 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 20:10:45,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589476710] [2020-10-27 20:10:45,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:45,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:45,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708497179] [2020-10-27 20:10:45,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:45,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:45,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:45,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:45,133 INFO L87 Difference]: Start difference. First operand 761 states and 1208 transitions. Second operand 4 states. [2020-10-27 20:10:45,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:45,378 INFO L93 Difference]: Finished difference Result 1325 states and 2107 transitions. [2020-10-27 20:10:45,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:45,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-27 20:10:45,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:45,389 INFO L225 Difference]: With dead ends: 1325 [2020-10-27 20:10:45,389 INFO L226 Difference]: Without dead ends: 1322 [2020-10-27 20:10:45,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-10-27 20:10:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1129. [2020-10-27 20:10:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-10-27 20:10:45,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1752 transitions. [2020-10-27 20:10:45,442 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1752 transitions. Word has length 25 [2020-10-27 20:10:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:45,442 INFO L481 AbstractCegarLoop]: Abstraction has 1129 states and 1752 transitions. [2020-10-27 20:10:45,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:45,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1752 transitions. [2020-10-27 20:10:45,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 20:10:45,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:45,448 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 20:10:45,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 20:10:45,448 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:45,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:45,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1816003101, now seen corresponding path program 1 times [2020-10-27 20:10:45,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:45,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104635903] [2020-10-27 20:10:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:45,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:45,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:45,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:45,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:45,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:46,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:46,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 20:10:46,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:10:46,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-10-27 20:10:46,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 20:10:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:10:46,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:46,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:46,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:46,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:46,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:46,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:46,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:10:46,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:46,169 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 20:10:46,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104635903] [2020-10-27 20:10:46,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:46,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:46,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526380691] [2020-10-27 20:10:46,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:46,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:46,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:46,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:46,173 INFO L87 Difference]: Start difference. First operand 1129 states and 1752 transitions. Second operand 4 states. [2020-10-27 20:10:46,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:46,369 INFO L93 Difference]: Finished difference Result 2605 states and 4059 transitions. [2020-10-27 20:10:46,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:46,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-27 20:10:46,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:46,379 INFO L225 Difference]: With dead ends: 2605 [2020-10-27 20:10:46,379 INFO L226 Difference]: Without dead ends: 1482 [2020-10-27 20:10:46,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:46,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2020-10-27 20:10:46,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1481. [2020-10-27 20:10:46,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-10-27 20:10:46,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2248 transitions. [2020-10-27 20:10:46,456 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2248 transitions. Word has length 25 [2020-10-27 20:10:46,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:46,457 INFO L481 AbstractCegarLoop]: Abstraction has 1481 states and 2248 transitions. [2020-10-27 20:10:46,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2248 transitions. [2020-10-27 20:10:46,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 20:10:46,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:46,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:10:46,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 20:10:46,460 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:46,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:46,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1055008634, now seen corresponding path program 1 times [2020-10-27 20:10:46,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:46,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241729665] [2020-10-27 20:10:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:46,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:46,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:46,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:46,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:47,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:47,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 20:10:47,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 20:10:47,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1093 [2020-10-27 20:10:47,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:47,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:47,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 20:10:47,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:10:47,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:47,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:47,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:47,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:47,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:10:47,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:47,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:47,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:47,648 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 20:10:47,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241729665] [2020-10-27 20:10:47,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:47,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:47,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887163583] [2020-10-27 20:10:47,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:47,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:47,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:47,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:47,651 INFO L87 Difference]: Start difference. First operand 1481 states and 2248 transitions. Second operand 4 states. [2020-10-27 20:10:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:47,876 INFO L93 Difference]: Finished difference Result 2509 states and 3787 transitions. [2020-10-27 20:10:47,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:47,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-27 20:10:47,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:47,891 INFO L225 Difference]: With dead ends: 2509 [2020-10-27 20:10:47,891 INFO L226 Difference]: Without dead ends: 2506 [2020-10-27 20:10:47,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:47,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2020-10-27 20:10:47,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2249. [2020-10-27 20:10:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2249 states. [2020-10-27 20:10:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 3336 transitions. [2020-10-27 20:10:48,010 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 3336 transitions. Word has length 26 [2020-10-27 20:10:48,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:48,010 INFO L481 AbstractCegarLoop]: Abstraction has 2249 states and 3336 transitions. [2020-10-27 20:10:48,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:48,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 3336 transitions. [2020-10-27 20:10:48,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 20:10:48,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:48,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:10:48,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 20:10:48,016 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:48,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:48,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1313174072, now seen corresponding path program 1 times [2020-10-27 20:10:48,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:48,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318673938] [2020-10-27 20:10:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:48,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:48,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:48,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:48,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:48,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:48,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:48,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:48,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 20:10:48,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 20:10:48,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-10-27 20:10:48,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:48,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 20:10:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:10:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:49,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:49,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:49,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:49,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:49,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:10:49,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:49,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:49,030 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 20:10:49,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318673938] [2020-10-27 20:10:49,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:49,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:49,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277944765] [2020-10-27 20:10:49,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:49,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:49,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:49,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:49,034 INFO L87 Difference]: Start difference. First operand 2249 states and 3336 transitions. Second operand 4 states. [2020-10-27 20:10:49,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:49,359 INFO L93 Difference]: Finished difference Result 5133 states and 7627 transitions. [2020-10-27 20:10:49,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:49,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-27 20:10:49,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:49,377 INFO L225 Difference]: With dead ends: 5133 [2020-10-27 20:10:49,377 INFO L226 Difference]: Without dead ends: 2890 [2020-10-27 20:10:49,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:49,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-10-27 20:10:49,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2889. [2020-10-27 20:10:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2889 states. [2020-10-27 20:10:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 4168 transitions. [2020-10-27 20:10:49,539 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 4168 transitions. Word has length 26 [2020-10-27 20:10:49,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:49,540 INFO L481 AbstractCegarLoop]: Abstraction has 2889 states and 4168 transitions. [2020-10-27 20:10:49,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:49,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 4168 transitions. [2020-10-27 20:10:49,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 20:10:49,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:49,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:10:49,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 20:10:49,547 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:49,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:49,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1647778806, now seen corresponding path program 1 times [2020-10-27 20:10:49,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:49,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198548243] [2020-10-27 20:10:49,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:49,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:49,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:49,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:49,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:49,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:49,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:51,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:51,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 20:10:51,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 20:10:51,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2060 [2020-10-27 20:10:51,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 20:10:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:10:51,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:51,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:51,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:51,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:51,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:51,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:51,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:10:51,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:51,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:51,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:51,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:51,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:51,683 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 20:10:51,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198548243] [2020-10-27 20:10:51,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:51,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:51,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777339278] [2020-10-27 20:10:51,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:51,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:51,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:51,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:51,687 INFO L87 Difference]: Start difference. First operand 2889 states and 4168 transitions. Second operand 4 states. [2020-10-27 20:10:51,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:51,989 INFO L93 Difference]: Finished difference Result 4748 states and 6730 transitions. [2020-10-27 20:10:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:51,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-27 20:10:51,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:52,014 INFO L225 Difference]: With dead ends: 4748 [2020-10-27 20:10:52,014 INFO L226 Difference]: Without dead ends: 4745 [2020-10-27 20:10:52,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:52,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4745 states. [2020-10-27 20:10:52,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4745 to 4489. [2020-10-27 20:10:52,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4489 states. [2020-10-27 20:10:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 6344 transitions. [2020-10-27 20:10:52,201 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 6344 transitions. Word has length 27 [2020-10-27 20:10:52,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:52,203 INFO L481 AbstractCegarLoop]: Abstraction has 4489 states and 6344 transitions. [2020-10-27 20:10:52,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 6344 transitions. [2020-10-27 20:10:52,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 20:10:52,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:10:52,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:10:52,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 20:10:52,212 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:10:52,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:10:52,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1389613368, now seen corresponding path program 1 times [2020-10-27 20:10:52,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:10:52,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227579014] [2020-10-27 20:10:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:10:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:52,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:52,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:52,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:52,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:52,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:52,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:52,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:53,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:53,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 20:10:53,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 20:10:53,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1724 [2020-10-27 20:10:53,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:10:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 20:10:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:10:53,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:54,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:10:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:10:54,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:10:54,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:10:54,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:10:54,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:10:54,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:10:54,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:10:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:10:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:10:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:10:54,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:10:54,018 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 20:10:54,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227579014] [2020-10-27 20:10:54,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:10:54,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:10:54,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353845384] [2020-10-27 20:10:54,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:10:54,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:10:54,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:10:54,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:10:54,023 INFO L87 Difference]: Start difference. First operand 4489 states and 6344 transitions. Second operand 4 states. [2020-10-27 20:10:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:10:54,424 INFO L93 Difference]: Finished difference Result 10121 states and 14280 transitions. [2020-10-27 20:10:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:10:54,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-27 20:10:54,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:10:54,426 INFO L225 Difference]: With dead ends: 10121 [2020-10-27 20:10:54,426 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 20:10:54,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:10:54,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 20:10:54,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 20:10:54,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 20:10:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 20:10:54,457 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-10-27 20:10:54,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:10:54,457 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 20:10:54,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:10:54,457 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 20:10:54,457 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 20:10:54,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 20:10:54,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 20:11:00,414 WARN L193 SmtUtils]: Spent 5.88 s on a formula simplification. DAG size of input: 1086 DAG size of output: 33 [2020-10-27 20:11:00,473 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 20:11:00,473 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 20:11:00,474 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 20:11:00,474 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 20:11:00,474 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:11:00,475 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 20:11:00,475 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:11:00,475 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:11:00,476 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 20:11:00,476 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 20:11:00,476 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:11:00,476 INFO L274 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-10-27 20:11:00,476 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 6 137) no Hoare annotation was computed. [2020-10-27 20:11:00,476 INFO L274 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-10-27 20:11:00,476 INFO L274 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-10-27 20:11:00,477 INFO L274 CegarLoopResult]: For program point L102-1(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,478 INFO L277 CegarLoopResult]: At program point L127-1(lines 35 132) the Hoare annotation is: true [2020-10-27 20:11:00,478 INFO L274 CegarLoopResult]: For program point L86-1(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,478 INFO L274 CegarLoopResult]: For program point L78-1(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,479 INFO L274 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-10-27 20:11:00,480 INFO L274 CegarLoopResult]: For program point L37(lines 37 39) no Hoare annotation was computed. [2020-10-27 20:11:00,480 INFO L274 CegarLoopResult]: For program point L70-1(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,480 INFO L274 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-10-27 20:11:00,481 INFO L270 CegarLoopResult]: At program point L128-1(lines 7 137) the Hoare annotation is: false [2020-10-27 20:11:00,481 INFO L274 CegarLoopResult]: For program point L62-1(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,481 INFO L274 CegarLoopResult]: For program point L112-1(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,481 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 6 137) no Hoare annotation was computed. [2020-10-27 20:11:00,481 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 6 137) the Hoare annotation is: true [2020-10-27 20:11:00,481 INFO L274 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-10-27 20:11:00,481 INFO L274 CegarLoopResult]: For program point L97-1(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,481 INFO L274 CegarLoopResult]: For program point L122-1(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,482 INFO L274 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-10-27 20:11:00,482 INFO L274 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-10-27 20:11:00,482 INFO L274 CegarLoopResult]: For program point L82-1(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,482 INFO L274 CegarLoopResult]: For program point L107-1(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,482 INFO L274 CegarLoopResult]: For program point L74-1(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,482 INFO L274 CegarLoopResult]: For program point L66-1(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,482 INFO L274 CegarLoopResult]: For program point L58(lines 58 60) no Hoare annotation was computed. [2020-10-27 20:11:00,483 INFO L274 CegarLoopResult]: For program point L58-2(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,483 INFO L274 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-10-27 20:11:00,483 INFO L277 CegarLoopResult]: At program point L133(lines 7 137) the Hoare annotation is: true [2020-10-27 20:11:00,483 INFO L274 CegarLoopResult]: For program point L92-1(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,483 INFO L274 CegarLoopResult]: For program point L117-1(lines 35 132) no Hoare annotation was computed. [2020-10-27 20:11:00,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:11:00 BoogieIcfgContainer [2020-10-27 20:11:00,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:11:00,503 INFO L168 Benchmark]: Toolchain (without parser) took 23013.08 ms. Allocated memory was 155.2 MB in the beginning and 480.2 MB in the end (delta: 325.1 MB). Free memory was 130.8 MB in the beginning and 316.1 MB in the end (delta: -185.2 MB). Peak memory consumption was 286.8 MB. Max. memory is 8.0 GB. [2020-10-27 20:11:00,503 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 125.8 MB. Free memory is still 84.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:11:00,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.20 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 120.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 20:11:00,518 INFO L168 Benchmark]: Boogie Preprocessor took 44.11 ms. Allocated memory is still 155.2 MB. Free memory was 120.3 MB in the beginning and 118.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 20:11:00,518 INFO L168 Benchmark]: RCFGBuilder took 491.43 ms. Allocated memory is still 155.2 MB. Free memory was 118.7 MB in the beginning and 100.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-27 20:11:00,519 INFO L168 Benchmark]: TraceAbstraction took 22099.23 ms. Allocated memory was 155.2 MB in the beginning and 480.2 MB in the end (delta: 325.1 MB). Free memory was 99.6 MB in the beginning and 316.1 MB in the end (delta: -216.5 MB). Peak memory consumption was 256.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:11:00,524 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 125.8 MB. Free memory is still 84.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 361.20 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 120.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.11 ms. Allocated memory is still 155.2 MB. Free memory was 120.3 MB in the beginning and 118.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 491.43 ms. Allocated memory is still 155.2 MB. Free memory was 118.7 MB in the beginning and 100.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22099.23 ms. Allocated memory was 155.2 MB in the beginning and 480.2 MB in the end (delta: 325.1 MB). Free memory was 99.6 MB in the beginning and 316.1 MB in the end (delta: -216.5 MB). Peak memory consumption was 256.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.9s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1107 SDtfs, 1608 SDslu, 123 SDs, 0 SdLazy, 827 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4489occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 16 MinimizatonAttempts, 1018 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 23 PreInvPairs, 281 NumberOfFragments, 38 HoareAnnotationTreeSize, 23 FomulaSimplifications, 3345285 FormulaSimplificationTreeSizeReduction, 5.9s HoareSimplificationTime, 8 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 376 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 360 ConstructedInterpolants, 0 QuantifiedInterpolants, 25104 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...