/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/array-examples/standard_init8_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:26:32,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:26:32,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:26:32,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:26:32,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:26:32,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:26:32,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:26:32,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:26:32,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:26:32,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:26:32,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:26:32,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:26:32,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:26:32,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:26:32,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:26:32,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:26:32,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:26:32,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:26:32,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:26:32,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:26:32,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:26:32,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:26:32,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:26:32,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:26:32,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:26:32,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:26:32,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:26:32,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:26:32,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:26:32,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:26:32,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:26:32,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:26:32,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:26:32,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:26:32,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:26:32,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:26:32,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:26:32,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:26:32,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:26:32,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:26:32,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:26:32,805 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 14:26:32,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:26:32,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:26:32,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:26:32,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:26:32,872 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:26:32,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:26:32,873 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:26:32,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:26:32,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:26:32,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:26:32,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:26:32,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:26:32,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:26:32,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:26:32,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:26:32,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:26:32,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:26:32,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:26:32,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:26:32,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:26:32,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:26:32,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:26:32,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:26:32,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:26:32,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:26:32,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:26:32,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:26:32,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:26:32,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:26:32,880 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:26:33,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:26:33,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:26:33,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:26:33,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:26:33,403 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:26:33,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init8_ground-1.i [2020-10-27 14:26:33,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fa192463/7fe11e827f5f43dc85927ac7b697fcc3/FLAG2f4b996ab [2020-10-27 14:26:34,172 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:26:34,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init8_ground-1.i [2020-10-27 14:26:34,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fa192463/7fe11e827f5f43dc85927ac7b697fcc3/FLAG2f4b996ab [2020-10-27 14:26:34,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fa192463/7fe11e827f5f43dc85927ac7b697fcc3 [2020-10-27 14:26:34,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:26:34,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:26:34,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:26:34,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:26:34,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:26:34,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:26:34" (1/1) ... [2020-10-27 14:26:34,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376c3dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:34, skipping insertion in model container [2020-10-27 14:26:34,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:26:34" (1/1) ... [2020-10-27 14:26:34,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:26:34,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:26:34,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:26:34,796 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:26:34,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:26:34,888 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:26:34,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:34 WrapperNode [2020-10-27 14:26:34,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:26:34,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:26:34,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:26:34,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:26:34,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:34" (1/1) ... [2020-10-27 14:26:34,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:34" (1/1) ... [2020-10-27 14:26:34,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:34" (1/1) ... [2020-10-27 14:26:34,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:34" (1/1) ... [2020-10-27 14:26:34,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:34" (1/1) ... [2020-10-27 14:26:34,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:34" (1/1) ... [2020-10-27 14:26:34,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:34" (1/1) ... [2020-10-27 14:26:34,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:26:34,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:26:34,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:26:34,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:26:34,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:34" (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 14:26:35,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:26:35,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:26:35,051 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:26:35,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:26:35,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:26:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:26:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:26:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:26:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:26:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:26:35,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:26:35,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:26:35,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:26:35,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:26:35,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:26:35,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:26:35,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:26:35,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:26:35,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:26:35,619 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:26:35,619 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-27 14:26:35,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:26:35 BoogieIcfgContainer [2020-10-27 14:26:35,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:26:35,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:26:35,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:26:35,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:26:35,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:26:34" (1/3) ... [2020-10-27 14:26:35,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa1e0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:26:35, skipping insertion in model container [2020-10-27 14:26:35,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:34" (2/3) ... [2020-10-27 14:26:35,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa1e0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:26:35, skipping insertion in model container [2020-10-27 14:26:35,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:26:35" (3/3) ... [2020-10-27 14:26:35,631 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init8_ground-1.i [2020-10-27 14:26:35,644 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:26:35,649 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:26:35,664 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:26:35,693 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:26:35,693 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:26:35,693 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:26:35,693 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:26:35,694 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:26:35,694 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:26:35,694 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:26:35,694 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:26:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-27 14:26:35,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 14:26:35,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:35,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:35,722 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:35,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:35,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1772990658, now seen corresponding path program 1 times [2020-10-27 14:26:35,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:35,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751385116] [2020-10-27 14:26:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:35,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:35,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:36,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:36,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:36,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:36,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:36,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:38,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:38,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 14:26:38,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:26:38,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2552 [2020-10-27 14:26:38,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:38,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:26:38,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 14:26:38,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:26:38,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:26:38,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:38,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:38,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:38,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:38,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:38,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:26:38,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:38,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:38,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:38,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:26:38,601 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 14:26:38,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751385116] [2020-10-27 14:26:38,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:26:38,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:26:38,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444052023] [2020-10-27 14:26:38,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:26:38,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:38,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:26:38,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:26:38,637 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-10-27 14:26:38,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:38,954 INFO L93 Difference]: Finished difference Result 82 states and 136 transitions. [2020-10-27 14:26:38,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:26:38,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-27 14:26:38,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:38,976 INFO L225 Difference]: With dead ends: 82 [2020-10-27 14:26:38,977 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:26:38,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:26:39,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:26:39,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-27 14:26:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 14:26:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-27 14:26:39,041 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 29 [2020-10-27 14:26:39,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:39,042 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-27 14:26:39,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:26:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-27 14:26:39,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 14:26:39,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:39,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:39,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:26:39,046 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:39,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:39,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1440650294, now seen corresponding path program 1 times [2020-10-27 14:26:39,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:39,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259741845] [2020-10-27 14:26:39,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:39,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:39,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:39,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:39,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:40,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:44,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:44,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 14:26:44,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:26:44,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 14:26:44,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:44,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:26:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 14:26:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 14:26:44,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:26:44,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:44,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:44,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:44,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:26:44,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:44,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 14:26:44,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259741845] [2020-10-27 14:26:44,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:44,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:26:44,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872658471] [2020-10-27 14:26:44,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:26:44,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:44,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:26:44,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:26:44,223 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 5 states. [2020-10-27 14:26:44,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:44,425 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2020-10-27 14:26:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:26:44,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-27 14:26:44,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:44,427 INFO L225 Difference]: With dead ends: 84 [2020-10-27 14:26:44,427 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 14:26:44,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:26:44,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 14:26:44,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-27 14:26:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 14:26:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-27 14:26:44,441 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 37 [2020-10-27 14:26:44,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:44,442 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-27 14:26:44,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:26:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-27 14:26:44,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 14:26:44,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:44,444 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:44,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:26:44,444 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:44,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1729417274, now seen corresponding path program 2 times [2020-10-27 14:26:44,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:44,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5047348] [2020-10-27 14:26:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:44,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:44,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:44,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:44,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:44,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:44,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:44,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:49,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:49,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 14:26:49,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:26:49,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:26:49,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:49,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:26:49,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:26:49,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:26:49,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:49,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:49,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:49,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:49,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:26:49,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:49,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 14:26:49,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5047348] [2020-10-27 14:26:49,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:49,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:26:49,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880346011] [2020-10-27 14:26:49,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:26:49,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:49,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:26:49,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:26:49,591 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 6 states. [2020-10-27 14:26:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:49,859 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2020-10-27 14:26:49,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:26:49,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-27 14:26:49,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:49,863 INFO L225 Difference]: With dead ends: 99 [2020-10-27 14:26:49,863 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 14:26:49,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:26:49,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 14:26:49,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-27 14:26:49,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 14:26:49,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-10-27 14:26:49,882 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 45 [2020-10-27 14:26:49,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:49,883 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-10-27 14:26:49,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:26:49,883 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-10-27 14:26:49,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 14:26:49,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:49,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 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 14:26:49,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:26:49,890 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:49,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:49,891 INFO L82 PathProgramCache]: Analyzing trace with hash 620300470, now seen corresponding path program 3 times [2020-10-27 14:26:49,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:49,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681183470] [2020-10-27 14:26:49,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:49,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:49,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:50,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:50,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:50,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:50,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:51,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:54,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:54,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 14:26:54,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:26:54,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:26:54,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:26:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:26:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:26:54,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:55,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:55,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:55,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:55,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:55,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:55,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:26:55,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:55,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:55,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:55,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:55,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 14:26:55,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681183470] [2020-10-27 14:26:55,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:55,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:26:55,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669345093] [2020-10-27 14:26:55,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:26:55,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:55,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:26:55,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:26:55,067 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 7 states. [2020-10-27 14:26:55,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:55,286 INFO L93 Difference]: Finished difference Result 114 states and 137 transitions. [2020-10-27 14:26:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:26:55,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-27 14:26:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:55,288 INFO L225 Difference]: With dead ends: 114 [2020-10-27 14:26:55,288 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 14:26:55,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:26:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 14:26:55,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-27 14:26:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 14:26:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-10-27 14:26:55,299 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 53 [2020-10-27 14:26:55,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:55,300 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-10-27 14:26:55,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:26:55,300 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-10-27 14:26:55,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 14:26:55,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:55,302 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 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 14:26:55,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:26:55,302 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:55,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:55,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1183117498, now seen corresponding path program 4 times [2020-10-27 14:26:55,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:55,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053548818] [2020-10-27 14:26:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:55,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:55,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:55,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:55,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:55,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:55,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:57,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:00,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:00,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 14:27:00,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:27:00,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:27:00,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:27:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:27:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:27:00,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:27:00,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:00,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:00,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:00,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:00,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:00,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:27:00,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:00,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-27 14:27:00,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053548818] [2020-10-27 14:27:00,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:00,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:27:00,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143682014] [2020-10-27 14:27:00,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:27:00,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:00,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:27:00,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:27:00,485 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 8 states. [2020-10-27 14:27:00,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:00,789 INFO L93 Difference]: Finished difference Result 129 states and 152 transitions. [2020-10-27 14:27:00,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:27:00,790 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-27 14:27:00,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:00,792 INFO L225 Difference]: With dead ends: 129 [2020-10-27 14:27:00,792 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 14:27:00,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:27:00,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 14:27:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-27 14:27:00,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 14:27:00,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-10-27 14:27:00,812 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 61 [2020-10-27 14:27:00,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:00,812 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-10-27 14:27:00,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:27:00,813 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-10-27 14:27:00,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 14:27:00,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:00,817 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 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 14:27:00,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:27:00,817 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:00,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:00,818 INFO L82 PathProgramCache]: Analyzing trace with hash -608395978, now seen corresponding path program 5 times [2020-10-27 14:27:00,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:00,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802513630] [2020-10-27 14:27:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:00,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:00,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:00,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:01,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:01,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:05,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:05,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 14:27:05,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:27:05,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:27:05,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:05,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:27:05,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 14:27:05,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:27:05,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:05,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:05,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:05,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:05,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:05,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:27:05,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:05,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:05,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 14:27:06,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802513630] [2020-10-27 14:27:06,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:06,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:27:06,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182531860] [2020-10-27 14:27:06,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:27:06,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:06,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:27:06,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:27:06,008 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 9 states. [2020-10-27 14:27:06,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:06,301 INFO L93 Difference]: Finished difference Result 144 states and 167 transitions. [2020-10-27 14:27:06,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:27:06,302 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-27 14:27:06,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:06,303 INFO L225 Difference]: With dead ends: 144 [2020-10-27 14:27:06,303 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 14:27:06,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:27:06,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 14:27:06,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-27 14:27:06,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 14:27:06,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2020-10-27 14:27:06,315 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 69 [2020-10-27 14:27:06,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:06,315 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2020-10-27 14:27:06,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:27:06,316 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2020-10-27 14:27:06,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 14:27:06,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:06,317 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 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 14:27:06,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:27:06,317 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:06,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:06,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1558671674, now seen corresponding path program 6 times [2020-10-27 14:27:06,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:06,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053461044] [2020-10-27 14:27:06,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:06,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:06,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:06,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:06,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:06,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:06,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:11,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:11,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 14:27:11,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:27:11,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:27:11,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:27:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:27:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:27:11,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:11,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:11,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:11,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:11,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:11,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:27:11,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:11,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:11,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:11,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:11,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-27 14:27:11,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053461044] [2020-10-27 14:27:11,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:11,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:27:11,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764883772] [2020-10-27 14:27:11,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:27:11,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:11,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:27:11,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:27:11,484 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 10 states. [2020-10-27 14:27:11,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:11,847 INFO L93 Difference]: Finished difference Result 159 states and 182 transitions. [2020-10-27 14:27:11,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:27:11,847 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-10-27 14:27:11,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:11,848 INFO L225 Difference]: With dead ends: 159 [2020-10-27 14:27:11,848 INFO L226 Difference]: Without dead ends: 90 [2020-10-27 14:27:11,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:27:11,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-27 14:27:11,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-27 14:27:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-27 14:27:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2020-10-27 14:27:11,866 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 77 [2020-10-27 14:27:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:11,867 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2020-10-27 14:27:11,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:27:11,867 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2020-10-27 14:27:11,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 14:27:11,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:11,868 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 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 14:27:11,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:27:11,869 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:11,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:11,869 INFO L82 PathProgramCache]: Analyzing trace with hash -909553226, now seen corresponding path program 7 times [2020-10-27 14:27:11,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:11,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538916929] [2020-10-27 14:27:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:11,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:11,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:12,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:12,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:16,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:16,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 14:27:16,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:27:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:27:16,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:27:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 14:27:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 14:27:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:17,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:17,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:17,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:17,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:17,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:27:17,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:17,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-27 14:27:17,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538916929] [2020-10-27 14:27:17,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:17,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:27:17,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827694776] [2020-10-27 14:27:17,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:27:17,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:17,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:27:17,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:27:17,079 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 11 states. [2020-10-27 14:27:17,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:17,386 INFO L93 Difference]: Finished difference Result 174 states and 197 transitions. [2020-10-27 14:27:17,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:27:17,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-10-27 14:27:17,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:17,387 INFO L225 Difference]: With dead ends: 174 [2020-10-27 14:27:17,387 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 14:27:17,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:27:17,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 14:27:17,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-27 14:27:17,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-27 14:27:17,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-10-27 14:27:17,400 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 85 [2020-10-27 14:27:17,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:17,400 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-10-27 14:27:17,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:27:17,401 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-10-27 14:27:17,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 14:27:17,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:17,402 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 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 14:27:17,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:27:17,402 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:17,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:17,403 INFO L82 PathProgramCache]: Analyzing trace with hash 119296442, now seen corresponding path program 8 times [2020-10-27 14:27:17,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:17,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678773891] [2020-10-27 14:27:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:17,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:17,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:17,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:18,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:22,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:22,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 14:27:22,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:27:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:27:22,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:27:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 14:27:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:27:22,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:22,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:22,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:22,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:22,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:22,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:22,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:27:22,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-27 14:27:22,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678773891] [2020-10-27 14:27:22,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:22,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:27:22,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378250620] [2020-10-27 14:27:22,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:27:22,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:22,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:27:22,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:27:22,617 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 12 states. [2020-10-27 14:27:23,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:23,042 INFO L93 Difference]: Finished difference Result 189 states and 212 transitions. [2020-10-27 14:27:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:27:23,044 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-10-27 14:27:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:23,045 INFO L225 Difference]: With dead ends: 189 [2020-10-27 14:27:23,045 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 14:27:23,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:27:23,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 14:27:23,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-27 14:27:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 14:27:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 114 transitions. [2020-10-27 14:27:23,075 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 114 transitions. Word has length 93 [2020-10-27 14:27:23,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:23,081 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 114 transitions. [2020-10-27 14:27:23,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:27:23,082 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 114 transitions. [2020-10-27 14:27:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 14:27:23,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:23,084 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 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 14:27:23,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:27:23,084 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:23,085 INFO L82 PathProgramCache]: Analyzing trace with hash -591452618, now seen corresponding path program 9 times [2020-10-27 14:27:23,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:23,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402913624] [2020-10-27 14:27:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:23,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:23,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:23,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:25,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:28,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:28,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 14:27:28,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:27:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:27:28,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:27:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 14:27:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 14:27:28,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:28,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:28,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:28,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:28,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:28,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:27:28,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:27:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-27 14:27:28,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402913624] [2020-10-27 14:27:28,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:28,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:27:28,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29818097] [2020-10-27 14:27:28,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:27:28,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:28,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:27:28,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:27:28,309 INFO L87 Difference]: Start difference. First operand 106 states and 114 transitions. Second operand 13 states. [2020-10-27 14:27:28,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:28,628 INFO L93 Difference]: Finished difference Result 204 states and 227 transitions. [2020-10-27 14:27:28,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:27:28,629 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 101 [2020-10-27 14:27:28,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:28,630 INFO L225 Difference]: With dead ends: 204 [2020-10-27 14:27:28,630 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 14:27:28,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:27:28,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 14:27:28,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-10-27 14:27:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-27 14:27:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2020-10-27 14:27:28,647 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 101 [2020-10-27 14:27:28,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:28,647 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2020-10-27 14:27:28,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:27:28,647 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2020-10-27 14:27:28,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:27:28,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:28,649 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 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 14:27:28,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:27:28,649 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:28,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:28,650 INFO L82 PathProgramCache]: Analyzing trace with hash 604213818, now seen corresponding path program 10 times [2020-10-27 14:27:28,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:28,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996024667] [2020-10-27 14:27:28,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:28,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:28,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:28,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:28,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:31,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:33,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:33,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 14:27:33,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:27:33,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:27:33,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:33,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:27:33,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 14:27:33,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:27:33,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:33,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:33,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:33,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:33,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:33,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:33,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:27:33,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:33,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:33,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:33,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:33,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2020-10-27 14:27:33,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996024667] [2020-10-27 14:27:33,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:33,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:27:33,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48525534] [2020-10-27 14:27:33,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:27:33,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:33,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:27:33,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:27:33,870 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 14 states. [2020-10-27 14:27:34,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:34,181 INFO L93 Difference]: Finished difference Result 219 states and 242 transitions. [2020-10-27 14:27:34,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:27:34,181 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 109 [2020-10-27 14:27:34,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:34,182 INFO L225 Difference]: With dead ends: 219 [2020-10-27 14:27:34,182 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 14:27:34,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:27:34,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 14:27:34,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-10-27 14:27:34,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-27 14:27:34,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2020-10-27 14:27:34,192 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 109 [2020-10-27 14:27:34,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:34,192 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2020-10-27 14:27:34,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:27:34,192 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2020-10-27 14:27:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 14:27:34,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:34,194 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 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 14:27:34,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:27:34,194 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:34,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:34,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1606542666, now seen corresponding path program 11 times [2020-10-27 14:27:34,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:34,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816672249] [2020-10-27 14:27:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:34,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:34,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:34,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:37,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:39,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:39,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 14:27:39,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:27:39,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:27:39,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:39,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:27:39,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 14:27:39,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 14:27:39,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:39,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:39,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:39,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:39,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:39,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:39,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:27:39,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:39,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:39,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:39,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:39,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2020-10-27 14:27:39,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816672249] [2020-10-27 14:27:39,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:39,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:27:39,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967447378] [2020-10-27 14:27:39,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:27:39,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:39,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:27:39,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:27:39,486 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand 15 states. [2020-10-27 14:27:39,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:39,897 INFO L93 Difference]: Finished difference Result 234 states and 257 transitions. [2020-10-27 14:27:39,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:27:39,897 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 117 [2020-10-27 14:27:39,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:39,898 INFO L225 Difference]: With dead ends: 234 [2020-10-27 14:27:39,898 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 14:27:39,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:27:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 14:27:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-27 14:27:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 14:27:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2020-10-27 14:27:39,907 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 117 [2020-10-27 14:27:39,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:39,907 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2020-10-27 14:27:39,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:27:39,907 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2020-10-27 14:27:39,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-27 14:27:39,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:39,909 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 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 14:27:39,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:27:39,909 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:39,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:39,910 INFO L82 PathProgramCache]: Analyzing trace with hash 343749306, now seen corresponding path program 12 times [2020-10-27 14:27:39,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:39,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954856215] [2020-10-27 14:27:39,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:39,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:40,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:40,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:40,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:40,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:43,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:44,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:44,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 14:27:44,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:27:44,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:27:44,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:27:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 14:27:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:27:44,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:45,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:45,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:45,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:45,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:45,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:45,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:27:45,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:45,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2020-10-27 14:27:45,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954856215] [2020-10-27 14:27:45,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:45,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:27:45,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052974265] [2020-10-27 14:27:45,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:27:45,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:45,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:27:45,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:27:45,184 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand 16 states. [2020-10-27 14:27:45,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:45,647 INFO L93 Difference]: Finished difference Result 249 states and 272 transitions. [2020-10-27 14:27:45,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:27:45,648 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 125 [2020-10-27 14:27:45,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:45,649 INFO L225 Difference]: With dead ends: 249 [2020-10-27 14:27:45,649 INFO L226 Difference]: Without dead ends: 138 [2020-10-27 14:27:45,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:27:45,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-27 14:27:45,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-27 14:27:45,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-27 14:27:45,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 146 transitions. [2020-10-27 14:27:45,659 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 146 transitions. Word has length 125 [2020-10-27 14:27:45,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:45,659 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 146 transitions. [2020-10-27 14:27:45,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:27:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 146 transitions. [2020-10-27 14:27:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 14:27:45,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:45,661 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 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 14:27:45,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:27:45,662 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:45,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:45,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1038495542, now seen corresponding path program 13 times [2020-10-27 14:27:45,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:45,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345185659] [2020-10-27 14:27:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:45,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:45,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:45,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:46,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:50,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:50,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:50,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 14:27:50,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:27:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:27:50,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:27:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 14:27:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 14:27:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:50,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:50,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:50,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:50,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:50,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:50,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:27:50,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:50,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2020-10-27 14:27:50,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345185659] [2020-10-27 14:27:50,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:50,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:27:50,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415001973] [2020-10-27 14:27:50,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:27:50,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:50,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:27:50,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:27:50,969 INFO L87 Difference]: Start difference. First operand 138 states and 146 transitions. Second operand 17 states. [2020-10-27 14:27:51,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:51,388 INFO L93 Difference]: Finished difference Result 264 states and 287 transitions. [2020-10-27 14:27:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:27:51,388 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 133 [2020-10-27 14:27:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:51,390 INFO L225 Difference]: With dead ends: 264 [2020-10-27 14:27:51,390 INFO L226 Difference]: Without dead ends: 146 [2020-10-27 14:27:51,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:27:51,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-27 14:27:51,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-27 14:27:51,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-27 14:27:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2020-10-27 14:27:51,400 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 133 [2020-10-27 14:27:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:51,401 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2020-10-27 14:27:51,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:27:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2020-10-27 14:27:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 14:27:51,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:51,402 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 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 14:27:51,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:27:51,403 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:51,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:51,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1150733510, now seen corresponding path program 14 times [2020-10-27 14:27:51,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:51,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324321699] [2020-10-27 14:27:51,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:51,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:51,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:51,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:56,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:56,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 14:27:56,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:27:56,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:27:56,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:27:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 14:27:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:27:56,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:56,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:56,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:56,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:56,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:56,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:56,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:27:56,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:56,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:56,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:56,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:56,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2020-10-27 14:27:56,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324321699] [2020-10-27 14:27:56,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:56,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:27:56,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427113475] [2020-10-27 14:27:56,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:27:56,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:56,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:27:56,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:27:56,704 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 18 states. [2020-10-27 14:27:57,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:57,179 INFO L93 Difference]: Finished difference Result 279 states and 302 transitions. [2020-10-27 14:27:57,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:27:57,181 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 141 [2020-10-27 14:27:57,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:57,182 INFO L225 Difference]: With dead ends: 279 [2020-10-27 14:27:57,183 INFO L226 Difference]: Without dead ends: 154 [2020-10-27 14:27:57,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:27:57,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-27 14:27:57,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-27 14:27:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-27 14:27:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2020-10-27 14:27:57,201 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 141 [2020-10-27 14:27:57,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:57,201 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2020-10-27 14:27:57,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:27:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2020-10-27 14:27:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 14:27:57,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:57,203 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 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 14:27:57,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:27:57,203 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:57,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:57,204 INFO L82 PathProgramCache]: Analyzing trace with hash 2102879158, now seen corresponding path program 15 times [2020-10-27 14:27:57,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:57,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552561823] [2020-10-27 14:27:57,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:57,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:57,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:57,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:57,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:02,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:02,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 14:28:02,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:28:02,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:28:02,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:02,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:28:02,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 14:28:02,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:28:02,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:02,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:02,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:02,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:02,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:02,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:02,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:02,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-27 14:28:02,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552561823] [2020-10-27 14:28:02,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:02,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:28:02,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117076887] [2020-10-27 14:28:02,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:28:02,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:02,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:28:02,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:28:02,554 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand 19 states. [2020-10-27 14:28:02,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:02,993 INFO L93 Difference]: Finished difference Result 294 states and 317 transitions. [2020-10-27 14:28:02,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:28:02,993 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 149 [2020-10-27 14:28:02,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:02,994 INFO L225 Difference]: With dead ends: 294 [2020-10-27 14:28:02,995 INFO L226 Difference]: Without dead ends: 162 [2020-10-27 14:28:02,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:28:02,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-27 14:28:03,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-10-27 14:28:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-27 14:28:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 170 transitions. [2020-10-27 14:28:03,006 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 170 transitions. Word has length 149 [2020-10-27 14:28:03,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:03,007 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 170 transitions. [2020-10-27 14:28:03,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:28:03,007 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 170 transitions. [2020-10-27 14:28:03,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 14:28:03,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:03,009 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 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 14:28:03,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:28:03,009 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:03,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:03,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2108134330, now seen corresponding path program 16 times [2020-10-27 14:28:03,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:03,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304300762] [2020-10-27 14:28:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:03,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:03,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:03,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:03,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:08,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:08,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 14:28:08,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:28:08,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 14:28:08,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:08,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:28:08,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 14:28:08,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:28:08,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:08,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:08,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:08,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:08,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:08,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:08,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:08,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:08,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:08,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:08,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:08,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2020-10-27 14:28:08,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304300762] [2020-10-27 14:28:08,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:08,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:28:08,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752904588] [2020-10-27 14:28:08,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:28:08,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:08,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:28:08,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:28:08,409 INFO L87 Difference]: Start difference. First operand 162 states and 170 transitions. Second operand 20 states. [2020-10-27 14:28:08,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:08,930 INFO L93 Difference]: Finished difference Result 309 states and 332 transitions. [2020-10-27 14:28:08,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:28:08,930 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 157 [2020-10-27 14:28:08,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:08,932 INFO L225 Difference]: With dead ends: 309 [2020-10-27 14:28:08,933 INFO L226 Difference]: Without dead ends: 170 [2020-10-27 14:28:08,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:28:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-27 14:28:08,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-27 14:28:08,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-27 14:28:08,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 178 transitions. [2020-10-27 14:28:08,943 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 178 transitions. Word has length 157 [2020-10-27 14:28:08,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:08,944 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 178 transitions. [2020-10-27 14:28:08,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:28:08,944 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 178 transitions. [2020-10-27 14:28:08,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 14:28:08,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:08,951 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 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 14:28:08,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:28:08,952 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:08,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:08,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1003374538, now seen corresponding path program 17 times [2020-10-27 14:28:08,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:08,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618421646] [2020-10-27 14:28:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:09,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:09,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:09,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:09,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:09,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:14,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:14,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 14:28:14,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:28:14,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:28:14,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:28:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 14:28:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 14:28:14,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:14,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:14,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:14,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:14,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:14,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:14,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:28:14,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:14,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:14,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:14,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:14,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked. [2020-10-27 14:28:14,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618421646] [2020-10-27 14:28:14,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:14,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:28:14,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748375800] [2020-10-27 14:28:14,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:28:14,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:14,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:28:14,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:28:14,339 INFO L87 Difference]: Start difference. First operand 170 states and 178 transitions. Second operand 21 states. [2020-10-27 14:28:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:14,896 INFO L93 Difference]: Finished difference Result 324 states and 347 transitions. [2020-10-27 14:28:14,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:28:14,897 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 165 [2020-10-27 14:28:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:14,899 INFO L225 Difference]: With dead ends: 324 [2020-10-27 14:28:14,899 INFO L226 Difference]: Without dead ends: 178 [2020-10-27 14:28:14,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:28:14,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-27 14:28:14,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-10-27 14:28:14,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-27 14:28:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 186 transitions. [2020-10-27 14:28:14,911 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 186 transitions. Word has length 165 [2020-10-27 14:28:14,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:14,911 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 186 transitions. [2020-10-27 14:28:14,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:28:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 186 transitions. [2020-10-27 14:28:14,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-27 14:28:14,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:14,913 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 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 14:28:14,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:28:14,914 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:14,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:14,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1108890682, now seen corresponding path program 18 times [2020-10-27 14:28:14,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:14,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065029855] [2020-10-27 14:28:14,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:15,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:15,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:15,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:15,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:19,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:19,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 14:28:19,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:28:19,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:28:19,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:28:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 14:28:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:28:19,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:20,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:20,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:20,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:20,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:20,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:20,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:20,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:20,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:20,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:20,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:20,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1197 trivial. 0 not checked. [2020-10-27 14:28:20,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065029855] [2020-10-27 14:28:20,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:20,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:28:20,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774374834] [2020-10-27 14:28:20,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:28:20,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:20,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:28:20,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:28:20,355 INFO L87 Difference]: Start difference. First operand 178 states and 186 transitions. Second operand 22 states. [2020-10-27 14:28:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:20,923 INFO L93 Difference]: Finished difference Result 339 states and 362 transitions. [2020-10-27 14:28:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:28:20,924 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 173 [2020-10-27 14:28:20,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:20,926 INFO L225 Difference]: With dead ends: 339 [2020-10-27 14:28:20,926 INFO L226 Difference]: Without dead ends: 186 [2020-10-27 14:28:20,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:28:20,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-27 14:28:20,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-10-27 14:28:20,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-27 14:28:20,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 194 transitions. [2020-10-27 14:28:20,938 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 194 transitions. Word has length 173 [2020-10-27 14:28:20,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:20,938 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 194 transitions. [2020-10-27 14:28:20,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:28:20,939 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 194 transitions. [2020-10-27 14:28:20,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-27 14:28:20,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:20,941 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 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 14:28:20,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:28:20,941 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:20,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:20,942 INFO L82 PathProgramCache]: Analyzing trace with hash 370486454, now seen corresponding path program 19 times [2020-10-27 14:28:20,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:20,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626458330] [2020-10-27 14:28:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:21,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:21,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:21,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:21,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:21,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:26,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:26,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-27 14:28:26,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:28:26,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 14:28:26,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:26,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:28:26,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 14:28:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 14:28:26,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:26,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:26,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:26,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:26,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:26,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:26,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:26,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:26,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:26,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 1330 trivial. 0 not checked. [2020-10-27 14:28:26,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626458330] [2020-10-27 14:28:26,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:26,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:28:26,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735243229] [2020-10-27 14:28:26,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:28:26,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:26,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:28:26,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:28:26,444 INFO L87 Difference]: Start difference. First operand 186 states and 194 transitions. Second operand 23 states. [2020-10-27 14:28:27,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:27,062 INFO L93 Difference]: Finished difference Result 354 states and 377 transitions. [2020-10-27 14:28:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:28:27,064 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 181 [2020-10-27 14:28:27,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:27,065 INFO L225 Difference]: With dead ends: 354 [2020-10-27 14:28:27,065 INFO L226 Difference]: Without dead ends: 194 [2020-10-27 14:28:27,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:28:27,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-27 14:28:27,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-27 14:28:27,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-27 14:28:27,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 202 transitions. [2020-10-27 14:28:27,091 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 202 transitions. Word has length 181 [2020-10-27 14:28:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:27,092 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 202 transitions. [2020-10-27 14:28:27,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:28:27,092 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 202 transitions. [2020-10-27 14:28:27,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 14:28:27,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:27,099 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 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 14:28:27,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:28:27,099 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:27,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:27,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1906013370, now seen corresponding path program 20 times [2020-10-27 14:28:27,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:27,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843377344] [2020-10-27 14:28:27,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:27,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:27,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:27,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:27,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:27,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:32,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:32,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-27 14:28:32,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:28:32,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 14:28:32,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:28:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 14:28:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:28:32,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:32,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:32,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:32,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:32,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:32,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:32,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:32,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:32,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1470 trivial. 0 not checked. [2020-10-27 14:28:32,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843377344] [2020-10-27 14:28:32,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:32,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:28:32,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356340463] [2020-10-27 14:28:32,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:28:32,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:32,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:28:32,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:28:32,624 INFO L87 Difference]: Start difference. First operand 194 states and 202 transitions. Second operand 24 states. [2020-10-27 14:28:33,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:33,140 INFO L93 Difference]: Finished difference Result 369 states and 392 transitions. [2020-10-27 14:28:33,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:28:33,142 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 189 [2020-10-27 14:28:33,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:33,144 INFO L225 Difference]: With dead ends: 369 [2020-10-27 14:28:33,144 INFO L226 Difference]: Without dead ends: 202 [2020-10-27 14:28:33,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:28:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-27 14:28:33,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-27 14:28:33,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-27 14:28:33,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 210 transitions. [2020-10-27 14:28:33,155 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 210 transitions. Word has length 189 [2020-10-27 14:28:33,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:33,155 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 210 transitions. [2020-10-27 14:28:33,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:28:33,156 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 210 transitions. [2020-10-27 14:28:33,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-27 14:28:33,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:33,157 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 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 14:28:33,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:28:33,157 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:33,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:33,158 INFO L82 PathProgramCache]: Analyzing trace with hash 346145078, now seen corresponding path program 21 times [2020-10-27 14:28:33,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:33,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290203667] [2020-10-27 14:28:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:33,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:33,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:33,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:33,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:33,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:38,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:38,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-27 14:28:38,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:28:38,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 14:28:38,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:28:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 14:28:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 14:28:38,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:38,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:38,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:38,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:38,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:38,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:38,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:38,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:38,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:38,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:38,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:38,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 1617 trivial. 0 not checked. [2020-10-27 14:28:38,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290203667] [2020-10-27 14:28:38,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:38,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:28:38,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967260383] [2020-10-27 14:28:38,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:28:38,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:38,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:28:38,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:28:38,698 INFO L87 Difference]: Start difference. First operand 202 states and 210 transitions. Second operand 25 states. [2020-10-27 14:28:39,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:39,251 INFO L93 Difference]: Finished difference Result 384 states and 407 transitions. [2020-10-27 14:28:39,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:28:39,254 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 197 [2020-10-27 14:28:39,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:39,256 INFO L225 Difference]: With dead ends: 384 [2020-10-27 14:28:39,256 INFO L226 Difference]: Without dead ends: 210 [2020-10-27 14:28:39,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:28:39,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-27 14:28:39,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-10-27 14:28:39,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-27 14:28:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 218 transitions. [2020-10-27 14:28:39,266 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 218 transitions. Word has length 197 [2020-10-27 14:28:39,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:39,267 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 218 transitions. [2020-10-27 14:28:39,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:28:39,267 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 218 transitions. [2020-10-27 14:28:39,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-27 14:28:39,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:39,268 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 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 14:28:39,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:28:39,269 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:39,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:39,269 INFO L82 PathProgramCache]: Analyzing trace with hash -149883590, now seen corresponding path program 22 times [2020-10-27 14:28:39,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:39,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979542686] [2020-10-27 14:28:39,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:39,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:39,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:39,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:39,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:39,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:44,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:44,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-27 14:28:44,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:28:44,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 14:28:44,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:28:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-27 14:28:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:28:44,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:44,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:44,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:44,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:44,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:44,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:44,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:28:44,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:44,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:44,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:44,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:44,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2024 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2020-10-27 14:28:44,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979542686] [2020-10-27 14:28:44,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:44,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:28:44,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006966741] [2020-10-27 14:28:44,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:28:44,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:44,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:28:44,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:28:44,840 INFO L87 Difference]: Start difference. First operand 210 states and 218 transitions. Second operand 26 states. [2020-10-27 14:28:45,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:45,516 INFO L93 Difference]: Finished difference Result 399 states and 422 transitions. [2020-10-27 14:28:45,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:28:45,516 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 205 [2020-10-27 14:28:45,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:45,518 INFO L225 Difference]: With dead ends: 399 [2020-10-27 14:28:45,518 INFO L226 Difference]: Without dead ends: 218 [2020-10-27 14:28:45,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:28:45,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-27 14:28:45,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-27 14:28:45,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-27 14:28:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 226 transitions. [2020-10-27 14:28:45,530 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 226 transitions. Word has length 205 [2020-10-27 14:28:45,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:45,530 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 226 transitions. [2020-10-27 14:28:45,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:28:45,530 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 226 transitions. [2020-10-27 14:28:45,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-27 14:28:45,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:45,532 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 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 14:28:45,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:28:45,532 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:45,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:45,532 INFO L82 PathProgramCache]: Analyzing trace with hash -8948298, now seen corresponding path program 23 times [2020-10-27 14:28:45,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:45,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424676380] [2020-10-27 14:28:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:45,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:45,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:45,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:50,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:50,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 14:28:50,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:28:50,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:28:50,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:28:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-27 14:28:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 14:28:50,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:51,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:51,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:51,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:51,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:51,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:51,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 1932 trivial. 0 not checked. [2020-10-27 14:28:51,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424676380] [2020-10-27 14:28:51,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:51,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:28:51,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293478204] [2020-10-27 14:28:51,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:28:51,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:51,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:28:51,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:28:51,308 INFO L87 Difference]: Start difference. First operand 218 states and 226 transitions. Second operand 27 states. [2020-10-27 14:28:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:51,975 INFO L93 Difference]: Finished difference Result 414 states and 437 transitions. [2020-10-27 14:28:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:28:51,975 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 213 [2020-10-27 14:28:51,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:51,977 INFO L225 Difference]: With dead ends: 414 [2020-10-27 14:28:51,977 INFO L226 Difference]: Without dead ends: 226 [2020-10-27 14:28:51,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:28:51,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-27 14:28:51,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-27 14:28:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-27 14:28:51,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 234 transitions. [2020-10-27 14:28:51,993 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 234 transitions. Word has length 213 [2020-10-27 14:28:51,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:51,993 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 234 transitions. [2020-10-27 14:28:51,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:28:51,994 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 234 transitions. [2020-10-27 14:28:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-27 14:28:51,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:51,995 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 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 14:28:51,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:28:51,997 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:51,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:51,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1062786490, now seen corresponding path program 24 times [2020-10-27 14:28:51,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:51,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594412042] [2020-10-27 14:28:51,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:52,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:52,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:52,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:52,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:52,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:57,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:57,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-27 14:28:57,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:28:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 14:28:57,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:28:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-27 14:28:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:28:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:57,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:57,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:57,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:57,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:57,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:57,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:57,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:57,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:57,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:57,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:57,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2400 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 2100 trivial. 0 not checked. [2020-10-27 14:28:57,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594412042] [2020-10-27 14:28:57,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:57,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:28:57,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381792343] [2020-10-27 14:28:57,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:28:57,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:57,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:28:57,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:28:57,673 INFO L87 Difference]: Start difference. First operand 226 states and 234 transitions. Second operand 28 states. [2020-10-27 14:28:58,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:58,393 INFO L93 Difference]: Finished difference Result 429 states and 452 transitions. [2020-10-27 14:28:58,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:28:58,393 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 221 [2020-10-27 14:28:58,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:58,395 INFO L225 Difference]: With dead ends: 429 [2020-10-27 14:28:58,395 INFO L226 Difference]: Without dead ends: 234 [2020-10-27 14:28:58,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:28:58,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-27 14:28:58,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-27 14:28:58,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-27 14:28:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 242 transitions. [2020-10-27 14:28:58,406 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 242 transitions. Word has length 221 [2020-10-27 14:28:58,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:58,406 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 242 transitions. [2020-10-27 14:28:58,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:28:58,406 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 242 transitions. [2020-10-27 14:28:58,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-27 14:28:58,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:58,408 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 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 14:28:58,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:28:58,408 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:58,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:58,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1271510474, now seen corresponding path program 25 times [2020-10-27 14:28:58,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:58,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723039733] [2020-10-27 14:28:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:58,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:58,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:58,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:58,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:59,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:03,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:03,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-27 14:29:03,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:29:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 14:29:03,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:29:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-27 14:29:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 14:29:03,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:04,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:04,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:04,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:04,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:04,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:04,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:29:04,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:04,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:04,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:04,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:04,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2600 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2020-10-27 14:29:04,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723039733] [2020-10-27 14:29:04,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:04,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:29:04,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843025672] [2020-10-27 14:29:04,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:29:04,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:04,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:29:04,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:29:04,145 INFO L87 Difference]: Start difference. First operand 234 states and 242 transitions. Second operand 29 states. [2020-10-27 14:29:04,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:04,754 INFO L93 Difference]: Finished difference Result 444 states and 467 transitions. [2020-10-27 14:29:04,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:29:04,755 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 229 [2020-10-27 14:29:04,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:04,756 INFO L225 Difference]: With dead ends: 444 [2020-10-27 14:29:04,756 INFO L226 Difference]: Without dead ends: 242 [2020-10-27 14:29:04,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:29:04,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-27 14:29:04,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-27 14:29:04,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-27 14:29:04,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 250 transitions. [2020-10-27 14:29:04,769 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 250 transitions. Word has length 229 [2020-10-27 14:29:04,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:04,770 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 250 transitions. [2020-10-27 14:29:04,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:29:04,770 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 250 transitions. [2020-10-27 14:29:04,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-27 14:29:04,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:04,771 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 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 14:29:04,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:29:04,772 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:04,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:04,776 INFO L82 PathProgramCache]: Analyzing trace with hash 961746490, now seen corresponding path program 26 times [2020-10-27 14:29:04,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:04,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952244134] [2020-10-27 14:29:04,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:04,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:05,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:05,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:05,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:05,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:09,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:09,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-27 14:29:09,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:29:09,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 14:29:09,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:29:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-27 14:29:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:29:09,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:10,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:10,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:10,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:10,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:10,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:10,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:29:10,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:10,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2808 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 2457 trivial. 0 not checked. [2020-10-27 14:29:10,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952244134] [2020-10-27 14:29:10,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:10,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:29:10,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26261988] [2020-10-27 14:29:10,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:29:10,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:10,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:29:10,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:29:10,552 INFO L87 Difference]: Start difference. First operand 242 states and 250 transitions. Second operand 30 states. [2020-10-27 14:29:11,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:11,168 INFO L93 Difference]: Finished difference Result 459 states and 482 transitions. [2020-10-27 14:29:11,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:29:11,168 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 237 [2020-10-27 14:29:11,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:11,170 INFO L225 Difference]: With dead ends: 459 [2020-10-27 14:29:11,171 INFO L226 Difference]: Without dead ends: 250 [2020-10-27 14:29:11,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:29:11,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-27 14:29:11,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-10-27 14:29:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-27 14:29:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 258 transitions. [2020-10-27 14:29:11,182 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 258 transitions. Word has length 237 [2020-10-27 14:29:11,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:11,183 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 258 transitions. [2020-10-27 14:29:11,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:29:11,183 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 258 transitions. [2020-10-27 14:29:11,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-27 14:29:11,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:11,184 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 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 14:29:11,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:29:11,185 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:11,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:11,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1367458122, now seen corresponding path program 27 times [2020-10-27 14:29:11,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:11,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927111412] [2020-10-27 14:29:11,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:11,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:11,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:11,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:11,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:11,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:16,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:16,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 14:29:16,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:29:16,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 14:29:16,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:16,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:29:16,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 14:29:16,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 14:29:16,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:16,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:16,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:16,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:16,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:16,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:16,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:29:16,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:16,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3024 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2646 trivial. 0 not checked. [2020-10-27 14:29:16,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927111412] [2020-10-27 14:29:16,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:16,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:29:16,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816693886] [2020-10-27 14:29:16,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:29:16,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:16,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:29:16,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:29:16,972 INFO L87 Difference]: Start difference. First operand 250 states and 258 transitions. Second operand 31 states. [2020-10-27 14:29:17,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:17,622 INFO L93 Difference]: Finished difference Result 474 states and 497 transitions. [2020-10-27 14:29:17,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:29:17,623 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 245 [2020-10-27 14:29:17,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:17,625 INFO L225 Difference]: With dead ends: 474 [2020-10-27 14:29:17,625 INFO L226 Difference]: Without dead ends: 258 [2020-10-27 14:29:17,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:29:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-27 14:29:17,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2020-10-27 14:29:17,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-27 14:29:17,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 266 transitions. [2020-10-27 14:29:17,637 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 266 transitions. Word has length 245 [2020-10-27 14:29:17,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:17,637 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 266 transitions. [2020-10-27 14:29:17,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:29:17,637 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 266 transitions. [2020-10-27 14:29:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-27 14:29:17,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:17,639 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 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 14:29:17,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:29:17,639 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:17,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:17,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1440724666, now seen corresponding path program 28 times [2020-10-27 14:29:17,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:17,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094486802] [2020-10-27 14:29:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:17,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:17,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:18,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:18,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:18,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:22,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:22,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-27 14:29:22,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:29:22,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 14:29:22,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:29:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-27 14:29:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:29:22,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:23,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:23,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:23,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:23,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:23,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:23,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:29:23,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:23,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3248 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 2842 trivial. 0 not checked. [2020-10-27 14:29:23,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094486802] [2020-10-27 14:29:23,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:23,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:29:23,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151903438] [2020-10-27 14:29:23,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:29:23,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:23,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:29:23,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:29:23,561 INFO L87 Difference]: Start difference. First operand 258 states and 266 transitions. Second operand 32 states. [2020-10-27 14:29:24,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:24,359 INFO L93 Difference]: Finished difference Result 489 states and 512 transitions. [2020-10-27 14:29:24,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:29:24,360 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 253 [2020-10-27 14:29:24,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:24,361 INFO L225 Difference]: With dead ends: 489 [2020-10-27 14:29:24,361 INFO L226 Difference]: Without dead ends: 266 [2020-10-27 14:29:24,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:29:24,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-27 14:29:24,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-27 14:29:24,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-27 14:29:24,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 274 transitions. [2020-10-27 14:29:24,372 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 274 transitions. Word has length 253 [2020-10-27 14:29:24,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:24,373 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 274 transitions. [2020-10-27 14:29:24,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:29:24,373 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 274 transitions. [2020-10-27 14:29:24,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-27 14:29:24,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:24,375 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 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 14:29:24,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:29:24,375 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:24,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:24,376 INFO L82 PathProgramCache]: Analyzing trace with hash 133124918, now seen corresponding path program 29 times [2020-10-27 14:29:24,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:24,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602916321] [2020-10-27 14:29:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:24,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:24,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:24,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:25,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:25,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:29,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:29,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-27 14:29:29,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:29:29,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 14:29:29,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:29:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 14:29:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 14:29:29,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:30,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:30,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:30,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:30,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:30,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:29:30,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:30,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3480 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2020-10-27 14:29:30,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602916321] [2020-10-27 14:29:30,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:30,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:29:30,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488390657] [2020-10-27 14:29:30,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:29:30,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:30,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:29:30,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:29:30,296 INFO L87 Difference]: Start difference. First operand 266 states and 274 transitions. Second operand 33 states. [2020-10-27 14:29:31,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:31,057 INFO L93 Difference]: Finished difference Result 504 states and 527 transitions. [2020-10-27 14:29:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:29:31,058 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 261 [2020-10-27 14:29:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:31,060 INFO L225 Difference]: With dead ends: 504 [2020-10-27 14:29:31,060 INFO L226 Difference]: Without dead ends: 274 [2020-10-27 14:29:31,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:29:31,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-27 14:29:31,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-10-27 14:29:31,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-27 14:29:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 282 transitions. [2020-10-27 14:29:31,071 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 282 transitions. Word has length 261 [2020-10-27 14:29:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:31,071 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 282 transitions. [2020-10-27 14:29:31,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:29:31,072 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 282 transitions. [2020-10-27 14:29:31,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-27 14:29:31,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:31,073 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 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 14:29:31,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:29:31,074 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:31,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:31,074 INFO L82 PathProgramCache]: Analyzing trace with hash -2015447238, now seen corresponding path program 30 times [2020-10-27 14:29:31,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:31,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726904705] [2020-10-27 14:29:31,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:31,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:31,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:31,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:31,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:32,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:36,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:36,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-27 14:29:36,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:29:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 14:29:36,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:29:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-27 14:29:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:29:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:37,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:37,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:37,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:37,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:37,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:37,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:29:37,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:37,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3720 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3255 trivial. 0 not checked. [2020-10-27 14:29:37,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726904705] [2020-10-27 14:29:37,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:37,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:29:37,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541584239] [2020-10-27 14:29:37,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:29:37,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:37,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:29:37,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:29:37,050 INFO L87 Difference]: Start difference. First operand 274 states and 282 transitions. Second operand 34 states. [2020-10-27 14:29:37,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:37,878 INFO L93 Difference]: Finished difference Result 519 states and 542 transitions. [2020-10-27 14:29:37,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:29:37,879 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 269 [2020-10-27 14:29:37,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:37,880 INFO L225 Difference]: With dead ends: 519 [2020-10-27 14:29:37,880 INFO L226 Difference]: Without dead ends: 282 [2020-10-27 14:29:37,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:29:37,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-27 14:29:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-27 14:29:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-27 14:29:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 290 transitions. [2020-10-27 14:29:37,889 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 290 transitions. Word has length 269 [2020-10-27 14:29:37,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:37,889 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 290 transitions. [2020-10-27 14:29:37,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:29:37,889 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 290 transitions. [2020-10-27 14:29:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-27 14:29:37,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:37,891 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 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 14:29:37,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:29:37,891 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:37,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:37,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2015987638, now seen corresponding path program 31 times [2020-10-27 14:29:37,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:37,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369128355] [2020-10-27 14:29:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:38,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:38,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:38,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:38,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:38,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:42,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:42,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-27 14:29:42,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:29:42,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:29:42,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:29:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-27 14:29:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 14:29:42,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:43,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:43,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:43,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:43,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:43,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:43,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:29:43,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:43,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:43,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:43,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:43,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:43,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3968 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3472 trivial. 0 not checked. [2020-10-27 14:29:43,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369128355] [2020-10-27 14:29:43,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:43,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 14:29:43,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004632683] [2020-10-27 14:29:43,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 14:29:43,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:43,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 14:29:43,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:29:43,931 INFO L87 Difference]: Start difference. First operand 282 states and 290 transitions. Second operand 35 states. [2020-10-27 14:29:44,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:44,738 INFO L93 Difference]: Finished difference Result 534 states and 557 transitions. [2020-10-27 14:29:44,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:29:44,742 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 277 [2020-10-27 14:29:44,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:44,744 INFO L225 Difference]: With dead ends: 534 [2020-10-27 14:29:44,744 INFO L226 Difference]: Without dead ends: 290 [2020-10-27 14:29:44,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:29:44,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-27 14:29:44,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2020-10-27 14:29:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-27 14:29:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 298 transitions. [2020-10-27 14:29:44,755 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 298 transitions. Word has length 277 [2020-10-27 14:29:44,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:44,755 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 298 transitions. [2020-10-27 14:29:44,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 14:29:44,755 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 298 transitions. [2020-10-27 14:29:44,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-27 14:29:44,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:44,757 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 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 14:29:44,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:29:44,757 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:44,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:44,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1144002490, now seen corresponding path program 32 times [2020-10-27 14:29:44,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:44,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136726458] [2020-10-27 14:29:44,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:44,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:45,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:45,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:45,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:49,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:49,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-27 14:29:49,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:29:49,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-27 14:29:49,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 14:29:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 14:29:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:29:49,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:50,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:50,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:50,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:50,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:50,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:50,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:29:50,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:50,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:50,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4224 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2020-10-27 14:29:50,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136726458] [2020-10-27 14:29:50,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:50,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:29:50,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039423639] [2020-10-27 14:29:50,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:29:50,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:50,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:29:50,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:29:50,913 INFO L87 Difference]: Start difference. First operand 290 states and 298 transitions. Second operand 36 states. [2020-10-27 14:29:51,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:51,900 INFO L93 Difference]: Finished difference Result 549 states and 572 transitions. [2020-10-27 14:29:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:29:51,900 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 285 [2020-10-27 14:29:51,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:51,903 INFO L225 Difference]: With dead ends: 549 [2020-10-27 14:29:51,903 INFO L226 Difference]: Without dead ends: 298 [2020-10-27 14:29:51,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:29:51,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-27 14:29:51,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-27 14:29:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-27 14:29:51,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 306 transitions. [2020-10-27 14:29:51,915 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 306 transitions. Word has length 285 [2020-10-27 14:29:51,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:51,915 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 306 transitions. [2020-10-27 14:29:51,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:29:51,915 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 306 transitions. [2020-10-27 14:29:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-27 14:29:51,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:51,917 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 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 14:29:51,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:29:51,917 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:51,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:51,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1422711862, now seen corresponding path program 33 times [2020-10-27 14:29:51,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:51,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945760588] [2020-10-27 14:29:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:52,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:52,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:52,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:52,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:52,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:57,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:57,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-27 14:29:57,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:29:57,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 14:29:57,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:57,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 14:29:57,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 14:29:57,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 14:29:57,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:57,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:57,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:57,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:57,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:57,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:57,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:29:57,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:57,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4488 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3927 trivial. 0 not checked. [2020-10-27 14:29:58,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945760588] [2020-10-27 14:29:58,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:58,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 14:29:58,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969703714] [2020-10-27 14:29:58,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 14:29:58,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:58,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 14:29:58,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:29:58,021 INFO L87 Difference]: Start difference. First operand 298 states and 306 transitions. Second operand 37 states. [2020-10-27 14:29:58,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:58,862 INFO L93 Difference]: Finished difference Result 564 states and 587 transitions. [2020-10-27 14:29:58,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:29:58,863 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 293 [2020-10-27 14:29:58,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:58,866 INFO L225 Difference]: With dead ends: 564 [2020-10-27 14:29:58,866 INFO L226 Difference]: Without dead ends: 306 [2020-10-27 14:29:58,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:29:58,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-27 14:29:58,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2020-10-27 14:29:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-27 14:29:58,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 314 transitions. [2020-10-27 14:29:58,878 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 314 transitions. Word has length 293 [2020-10-27 14:29:58,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:58,878 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 314 transitions. [2020-10-27 14:29:58,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 14:29:58,878 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 314 transitions. [2020-10-27 14:29:58,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-27 14:29:58,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:58,880 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 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 14:29:58,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:29:58,881 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:58,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:58,881 INFO L82 PathProgramCache]: Analyzing trace with hash -2118920134, now seen corresponding path program 34 times [2020-10-27 14:29:58,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:58,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656388724] [2020-10-27 14:29:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:59,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:59,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:59,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:59,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:04,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:04,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-27 14:30:04,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:30:04,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 14:30:04,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:04,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 14:30:04,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-27 14:30:04,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:30:04,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:05,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:05,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:05,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:05,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:05,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:05,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:05,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:05,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:05,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:05,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:05,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2020-10-27 14:30:05,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656388724] [2020-10-27 14:30:05,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:05,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:30:05,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865636606] [2020-10-27 14:30:05,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:30:05,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:05,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:30:05,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:30:05,091 INFO L87 Difference]: Start difference. First operand 306 states and 314 transitions. Second operand 38 states. [2020-10-27 14:30:05,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:05,949 INFO L93 Difference]: Finished difference Result 579 states and 602 transitions. [2020-10-27 14:30:05,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:30:05,949 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 301 [2020-10-27 14:30:05,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:05,952 INFO L225 Difference]: With dead ends: 579 [2020-10-27 14:30:05,952 INFO L226 Difference]: Without dead ends: 314 [2020-10-27 14:30:05,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:30:05,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-27 14:30:05,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2020-10-27 14:30:05,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-27 14:30:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 322 transitions. [2020-10-27 14:30:05,962 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 322 transitions. Word has length 301 [2020-10-27 14:30:05,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:05,962 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 322 transitions. [2020-10-27 14:30:05,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:30:05,962 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 322 transitions. [2020-10-27 14:30:05,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-27 14:30:05,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:05,964 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 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 14:30:05,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:30:05,965 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:05,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:05,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1854320458, now seen corresponding path program 35 times [2020-10-27 14:30:05,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:05,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734679853] [2020-10-27 14:30:05,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:06,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:06,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:06,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:07,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:11,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:11,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-27 14:30:11,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:30:11,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 14:30:11,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:11,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-27 14:30:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-27 14:30:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 14:30:11,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:12,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:12,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:12,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:12,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:12,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:30:12,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:12,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:12,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2020-10-27 14:30:12,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734679853] [2020-10-27 14:30:12,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:12,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 14:30:12,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953658672] [2020-10-27 14:30:12,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 14:30:12,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:12,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 14:30:12,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:30:12,217 INFO L87 Difference]: Start difference. First operand 314 states and 322 transitions. Second operand 39 states. [2020-10-27 14:30:13,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:13,233 INFO L93 Difference]: Finished difference Result 594 states and 617 transitions. [2020-10-27 14:30:13,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 14:30:13,234 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 309 [2020-10-27 14:30:13,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:13,235 INFO L225 Difference]: With dead ends: 594 [2020-10-27 14:30:13,235 INFO L226 Difference]: Without dead ends: 322 [2020-10-27 14:30:13,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:30:13,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-27 14:30:13,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2020-10-27 14:30:13,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-27 14:30:13,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 330 transitions. [2020-10-27 14:30:13,247 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 330 transitions. Word has length 309 [2020-10-27 14:30:13,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:13,248 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 330 transitions. [2020-10-27 14:30:13,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 14:30:13,248 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 330 transitions. [2020-10-27 14:30:13,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-27 14:30:13,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:13,250 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 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 14:30:13,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:30:13,250 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:13,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:13,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1186334534, now seen corresponding path program 36 times [2020-10-27 14:30:13,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:13,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084101543] [2020-10-27 14:30:13,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:13,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:14,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:14,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:14,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:18,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:18,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-27 14:30:18,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:30:18,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 14:30:18,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-27 14:30:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-27 14:30:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:30:18,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:19,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:19,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:19,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:19,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:19,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:30:19,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:19,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:19,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:19,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:19,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5328 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 4662 trivial. 0 not checked. [2020-10-27 14:30:19,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084101543] [2020-10-27 14:30:19,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:19,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 14:30:19,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849014970] [2020-10-27 14:30:19,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 14:30:19,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:19,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 14:30:19,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:30:19,524 INFO L87 Difference]: Start difference. First operand 322 states and 330 transitions. Second operand 40 states. [2020-10-27 14:30:20,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:20,608 INFO L93 Difference]: Finished difference Result 609 states and 632 transitions. [2020-10-27 14:30:20,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:30:20,609 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 317 [2020-10-27 14:30:20,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:20,611 INFO L225 Difference]: With dead ends: 609 [2020-10-27 14:30:20,611 INFO L226 Difference]: Without dead ends: 330 [2020-10-27 14:30:20,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:30:20,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-27 14:30:20,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2020-10-27 14:30:20,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-27 14:30:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 338 transitions. [2020-10-27 14:30:20,623 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 338 transitions. Word has length 317 [2020-10-27 14:30:20,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:20,624 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 338 transitions. [2020-10-27 14:30:20,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 14:30:20,624 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 338 transitions. [2020-10-27 14:30:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-27 14:30:20,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:20,626 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 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 14:30:20,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:30:20,627 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:20,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:20,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1076959946, now seen corresponding path program 37 times [2020-10-27 14:30:20,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:20,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699956939] [2020-10-27 14:30:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:20,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:21,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:21,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:21,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:21,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:25,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:25,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-27 14:30:25,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:30:25,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:30:25,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-27 14:30:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-27 14:30:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 14:30:25,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:26,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:26,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:26,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:26,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:26,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:26,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:30:26,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:26,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5624 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 4921 trivial. 0 not checked. [2020-10-27 14:30:26,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699956939] [2020-10-27 14:30:26,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:26,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-27 14:30:26,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474401141] [2020-10-27 14:30:26,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-27 14:30:26,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:26,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-27 14:30:26,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:30:26,979 INFO L87 Difference]: Start difference. First operand 330 states and 338 transitions. Second operand 41 states. [2020-10-27 14:30:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:28,094 INFO L93 Difference]: Finished difference Result 624 states and 647 transitions. [2020-10-27 14:30:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:30:28,094 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 325 [2020-10-27 14:30:28,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:28,097 INFO L225 Difference]: With dead ends: 624 [2020-10-27 14:30:28,097 INFO L226 Difference]: Without dead ends: 338 [2020-10-27 14:30:28,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:30:28,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-27 14:30:28,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2020-10-27 14:30:28,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-27 14:30:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 346 transitions. [2020-10-27 14:30:28,108 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 346 transitions. Word has length 325 [2020-10-27 14:30:28,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:28,109 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 346 transitions. [2020-10-27 14:30:28,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-27 14:30:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 346 transitions. [2020-10-27 14:30:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-27 14:30:28,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:28,111 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 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 14:30:28,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 14:30:28,112 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:28,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:28,112 INFO L82 PathProgramCache]: Analyzing trace with hash -439191238, now seen corresponding path program 38 times [2020-10-27 14:30:28,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:28,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572668074] [2020-10-27 14:30:28,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:28,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:28,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:28,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:29,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking...