/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/eca-rers2012/Problem11_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:36:54,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:36:54,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:36:54,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:36:54,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:36:54,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:36:54,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:36:54,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:36:54,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:36:54,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:36:54,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:36:54,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:36:54,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:36:54,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:36:54,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:36:54,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:36:54,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:36:54,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:36:54,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:36:54,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:36:54,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:36:54,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:36:54,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:36:54,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:36:54,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:36:54,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:36:54,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:36:54,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:36:54,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:36:54,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:36:54,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:36:54,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:36:54,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:36:54,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:36:54,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:36:54,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:36:54,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:36:54,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:36:54,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:36:54,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:36:54,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:36:54,872 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 17:36:54,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:36:54,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:36:54,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:36:54,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:36:54,912 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:36:54,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:36:54,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:36:54,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:36:54,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:36:54,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:36:54,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:36:54,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:36:54,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:36:54,915 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:36:54,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:36:54,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:36:54,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:36:54,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:36:54,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:36:54,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:36:54,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:36:54,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:36:54,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:36:54,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:36:54,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:36:54,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:36:54,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:36:54,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:36:54,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:36:54,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:36:55,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:36:55,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:36:55,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:36:55,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:36:55,412 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:36:55,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label56.c [2020-10-27 17:36:55,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9014201e8/f60f5188a4674b62b2e8399e46d6e952/FLAGd41cd7a65 [2020-10-27 17:36:56,351 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:36:56,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label56.c [2020-10-27 17:36:56,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9014201e8/f60f5188a4674b62b2e8399e46d6e952/FLAGd41cd7a65 [2020-10-27 17:36:56,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9014201e8/f60f5188a4674b62b2e8399e46d6e952 [2020-10-27 17:36:56,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:36:56,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:36:56,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:36:56,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:36:56,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:36:56,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:36:56" (1/1) ... [2020-10-27 17:36:56,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4164d8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:56, skipping insertion in model container [2020-10-27 17:36:56,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:36:56" (1/1) ... [2020-10-27 17:36:56,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:36:56,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:36:57,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:36:57,331 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:36:57,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:36:57,619 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:36:57,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:57 WrapperNode [2020-10-27 17:36:57,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:36:57,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:36:57,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:36:57,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:36:57,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:57" (1/1) ... [2020-10-27 17:36:57,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:57" (1/1) ... [2020-10-27 17:36:57,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:57" (1/1) ... [2020-10-27 17:36:57,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:57" (1/1) ... [2020-10-27 17:36:57,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:57" (1/1) ... [2020-10-27 17:36:57,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:57" (1/1) ... [2020-10-27 17:36:57,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:57" (1/1) ... [2020-10-27 17:36:57,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:36:57,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:36:57,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:36:57,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:36:57,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:57" (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 17:36:57,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:36:57,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:36:57,952 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:36:57,952 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:36:57,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:36:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:36:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:36:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:36:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:36:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:36:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:36:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:36:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:36:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:36:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:36:57,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:36:57,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:36:57,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:36:57,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:37:00,016 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:37:00,017 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:37:00,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:37:00 BoogieIcfgContainer [2020-10-27 17:37:00,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:37:00,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:37:00,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:37:00,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:37:00,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:36:56" (1/3) ... [2020-10-27 17:37:00,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512da07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:37:00, skipping insertion in model container [2020-10-27 17:37:00,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:57" (2/3) ... [2020-10-27 17:37:00,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512da07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:37:00, skipping insertion in model container [2020-10-27 17:37:00,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:37:00" (3/3) ... [2020-10-27 17:37:00,030 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label56.c [2020-10-27 17:37:00,043 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:37:00,050 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:37:00,064 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:37:00,095 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:37:00,096 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:37:00,096 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:37:00,096 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:37:00,096 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:37:00,096 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:37:00,096 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:37:00,125 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:37:00,172 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-27 17:37:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 17:37:00,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:00,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:37:00,183 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:00,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:00,193 INFO L82 PathProgramCache]: Analyzing trace with hash -2051016672, now seen corresponding path program 1 times [2020-10-27 17:37:00,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:00,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027040171] [2020-10-27 17:37:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:00,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:01,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:01,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 17:37:01,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:01,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-10-27 17:37:01,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:37:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:37:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 17:37:01,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:37:01,311 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 17:37:01,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:01,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:01,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:01,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:01,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:01,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 17:37:01,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:01,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:01,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:01,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:37:01,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:37:01,378 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 17:37:01,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027040171] [2020-10-27 17:37:01,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:37:01,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:37:01,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795141040] [2020-10-27 17:37:01,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:37:01,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:01,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:37:01,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:37:01,410 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-27 17:37:04,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:04,609 INFO L93 Difference]: Finished difference Result 804 states and 1407 transitions. [2020-10-27 17:37:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:37:04,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-27 17:37:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:04,631 INFO L225 Difference]: With dead ends: 804 [2020-10-27 17:37:04,632 INFO L226 Difference]: Without dead ends: 444 [2020-10-27 17:37:04,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:37:04,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-27 17:37:04,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 430. [2020-10-27 17:37:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-27 17:37:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 646 transitions. [2020-10-27 17:37:04,785 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 646 transitions. Word has length 48 [2020-10-27 17:37:04,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:04,787 INFO L481 AbstractCegarLoop]: Abstraction has 430 states and 646 transitions. [2020-10-27 17:37:04,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:37:04,787 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 646 transitions. [2020-10-27 17:37:04,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 17:37:04,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:04,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:37:04,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:37:04,801 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:04,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:04,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1519808384, now seen corresponding path program 1 times [2020-10-27 17:37:04,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:04,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985809497] [2020-10-27 17:37:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:04,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:05,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:06,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:06,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 17:37:06,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:37:06,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1167 [2020-10-27 17:37:06,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 17:37:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 17:37:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:37:06,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:06,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:06,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:06,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:06,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:37:06,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:06,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:37:06,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:06,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:06,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 17:37:06,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:06,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 17:37:06,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:06,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:06,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:06,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 17:37:06,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:37:06,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985809497] [2020-10-27 17:37:06,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:06,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:37:06,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654699668] [2020-10-27 17:37:06,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:37:06,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:06,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:37:06,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:37:06,556 INFO L87 Difference]: Start difference. First operand 430 states and 646 transitions. Second operand 6 states. [2020-10-27 17:37:11,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:11,003 INFO L93 Difference]: Finished difference Result 1253 states and 1960 transitions. [2020-10-27 17:37:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:37:11,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-27 17:37:11,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:11,013 INFO L225 Difference]: With dead ends: 1253 [2020-10-27 17:37:11,013 INFO L226 Difference]: Without dead ends: 829 [2020-10-27 17:37:11,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:37:11,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2020-10-27 17:37:11,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 813. [2020-10-27 17:37:11,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2020-10-27 17:37:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1207 transitions. [2020-10-27 17:37:11,064 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1207 transitions. Word has length 118 [2020-10-27 17:37:11,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:11,065 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1207 transitions. [2020-10-27 17:37:11,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:37:11,065 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1207 transitions. [2020-10-27 17:37:11,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 17:37:11,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:11,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:37:11,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:37:11,068 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:11,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:11,068 INFO L82 PathProgramCache]: Analyzing trace with hash -2103945864, now seen corresponding path program 1 times [2020-10-27 17:37:11,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:11,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286289220] [2020-10-27 17:37:11,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:11,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:11,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:11,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:13,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:13,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 17:37:13,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:37:13,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2154 [2020-10-27 17:37:13,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 17:37:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 17:37:13,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:13,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:13,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:13,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:13,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:13,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:13,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:37:13,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:13,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:13,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:13,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:13,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:37:13,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:13,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 17:37:13,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:13,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 17:37:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 17:37:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:37:13,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286289220] [2020-10-27 17:37:13,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:13,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:37:13,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286495079] [2020-10-27 17:37:13,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:37:13,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:13,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:37:13,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:37:13,707 INFO L87 Difference]: Start difference. First operand 813 states and 1207 transitions. Second operand 5 states. [2020-10-27 17:37:16,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:16,579 INFO L93 Difference]: Finished difference Result 2391 states and 3619 transitions. [2020-10-27 17:37:16,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:37:16,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-27 17:37:16,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:16,592 INFO L225 Difference]: With dead ends: 2391 [2020-10-27 17:37:16,593 INFO L226 Difference]: Without dead ends: 1584 [2020-10-27 17:37:16,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:37:16,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2020-10-27 17:37:16,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1577. [2020-10-27 17:37:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-10-27 17:37:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2325 transitions. [2020-10-27 17:37:16,659 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2325 transitions. Word has length 122 [2020-10-27 17:37:16,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:16,660 INFO L481 AbstractCegarLoop]: Abstraction has 1577 states and 2325 transitions. [2020-10-27 17:37:16,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:37:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2325 transitions. [2020-10-27 17:37:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 17:37:16,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:16,664 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:37:16,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:37:16,665 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:16,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:16,665 INFO L82 PathProgramCache]: Analyzing trace with hash -821655358, now seen corresponding path program 1 times [2020-10-27 17:37:16,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:16,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362849819] [2020-10-27 17:37:16,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:16,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:17,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:18,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:18,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 17:37:18,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:37:18,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1624 [2020-10-27 17:37:18,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:18,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:18,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 17:37:18,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 17:37:18,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:37:18,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:18,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:18,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:18,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:18,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:18,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 17:37:18,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:18,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:18,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:18,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:18,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:18,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:18,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:18,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:18,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 17:37:18,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:18,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 17:37:18,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 17:37:18,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:37:18,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362849819] [2020-10-27 17:37:18,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:18,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:37:18,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215172554] [2020-10-27 17:37:18,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:37:18,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:18,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:37:18,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:37:18,772 INFO L87 Difference]: Start difference. First operand 1577 states and 2325 transitions. Second operand 5 states. [2020-10-27 17:37:21,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:21,968 INFO L93 Difference]: Finished difference Result 4670 states and 7082 transitions. [2020-10-27 17:37:21,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:37:21,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-27 17:37:21,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:21,996 INFO L225 Difference]: With dead ends: 4670 [2020-10-27 17:37:21,997 INFO L226 Difference]: Without dead ends: 3099 [2020-10-27 17:37:22,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:37:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2020-10-27 17:37:22,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 3095. [2020-10-27 17:37:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3095 states. [2020-10-27 17:37:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4435 transitions. [2020-10-27 17:37:22,135 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4435 transitions. Word has length 150 [2020-10-27 17:37:22,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:22,136 INFO L481 AbstractCegarLoop]: Abstraction has 3095 states and 4435 transitions. [2020-10-27 17:37:22,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:37:22,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4435 transitions. [2020-10-27 17:37:22,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-27 17:37:22,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:22,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:37:22,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:37:22,146 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:22,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:22,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1335220711, now seen corresponding path program 1 times [2020-10-27 17:37:22,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:22,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277226076] [2020-10-27 17:37:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:22,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:22,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:22,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-27 17:37:22,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:22,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-27 17:37:22,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:22,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:37:22,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:37:22,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 17:37:22,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:22,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:22,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:22,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:22,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:22,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:22,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 17:37:22,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:37:22,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:22,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:23,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:23,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:23,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:37:23,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:23,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-27 17:37:23,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:37:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 17:37:23,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:37:23,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277226076] [2020-10-27 17:37:23,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:37:23,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 17:37:23,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388387791] [2020-10-27 17:37:23,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:37:23,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:23,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:37:23,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:37:23,612 INFO L87 Difference]: Start difference. First operand 3095 states and 4435 transitions. Second operand 7 states. [2020-10-27 17:37:26,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:26,634 INFO L93 Difference]: Finished difference Result 6207 states and 8987 transitions. [2020-10-27 17:37:26,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 17:37:26,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-10-27 17:37:26,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:26,655 INFO L225 Difference]: With dead ends: 6207 [2020-10-27 17:37:26,657 INFO L226 Difference]: Without dead ends: 3118 [2020-10-27 17:37:26,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 17:37:26,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2020-10-27 17:37:26,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 2923. [2020-10-27 17:37:26,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2923 states. [2020-10-27 17:37:26,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 3779 transitions. [2020-10-27 17:37:26,782 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 3779 transitions. Word has length 185 [2020-10-27 17:37:26,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:26,782 INFO L481 AbstractCegarLoop]: Abstraction has 2923 states and 3779 transitions. [2020-10-27 17:37:26,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:37:26,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 3779 transitions. [2020-10-27 17:37:26,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-27 17:37:26,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:26,787 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:37:26,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:37:26,788 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:26,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:26,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1405692732, now seen corresponding path program 1 times [2020-10-27 17:37:26,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:26,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910894628] [2020-10-27 17:37:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:26,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:27,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:27,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:27,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:31,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:31,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:31,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 17:37:31,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:37:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 17:37:31,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-27 17:37:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 17:37:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:32,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:32,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:32,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:32,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:32,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:32,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:37:32,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:32,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:32,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:32,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:32,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:32,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:32,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:32,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:32,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:37:32,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:32,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 17:37:32,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:32,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:32,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 17:37:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:32,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:32,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:32,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 17:37:32,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-27 17:37:32,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 17:37:32,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-27 17:37:32,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910894628] [2020-10-27 17:37:32,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:32,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:37:32,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522542434] [2020-10-27 17:37:32,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:37:32,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:32,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:37:32,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:37:32,527 INFO L87 Difference]: Start difference. First operand 2923 states and 3779 transitions. Second operand 5 states. [2020-10-27 17:37:33,568 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 17:37:34,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:34,710 INFO L93 Difference]: Finished difference Result 5859 states and 7590 transitions. [2020-10-27 17:37:34,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:37:34,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-27 17:37:34,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:34,728 INFO L225 Difference]: With dead ends: 5859 [2020-10-27 17:37:34,728 INFO L226 Difference]: Without dead ends: 2927 [2020-10-27 17:37:34,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:37:34,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-10-27 17:37:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2923. [2020-10-27 17:37:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2923 states. [2020-10-27 17:37:34,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 3775 transitions. [2020-10-27 17:37:34,832 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 3775 transitions. Word has length 206 [2020-10-27 17:37:34,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:34,833 INFO L481 AbstractCegarLoop]: Abstraction has 2923 states and 3775 transitions. [2020-10-27 17:37:34,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:37:34,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 3775 transitions. [2020-10-27 17:37:34,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-27 17:37:34,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:34,839 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:37:34,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:37:34,840 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:34,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:34,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1801250298, now seen corresponding path program 1 times [2020-10-27 17:37:34,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:34,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56414200] [2020-10-27 17:37:34,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:34,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:35,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:35,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:37,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:39,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:39,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-27 17:37:39,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:37:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 17:37:39,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-10-27 17:37:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 17:37:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:40,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:40,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:40,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:40,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:40,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:40,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:37:40,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:40,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:40,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:40,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:40,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:40,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:40,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:40,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:40,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 17:37:40,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:40,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 17:37:40,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:40,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:37:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 17:37:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:40,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:40,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:40,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 17:37:40,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:40,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 17:37:40,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 17:37:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-27 17:37:40,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56414200] [2020-10-27 17:37:40,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:40,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:37:40,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467985005] [2020-10-27 17:37:40,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:37:40,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:40,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:37:40,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:37:40,519 INFO L87 Difference]: Start difference. First operand 2923 states and 3775 transitions. Second operand 5 states. [2020-10-27 17:37:43,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:43,477 INFO L93 Difference]: Finished difference Result 7182 states and 9310 transitions. [2020-10-27 17:37:43,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:37:43,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2020-10-27 17:37:43,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:43,498 INFO L225 Difference]: With dead ends: 7182 [2020-10-27 17:37:43,498 INFO L226 Difference]: Without dead ends: 4265 [2020-10-27 17:37:43,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:37:43,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4265 states. [2020-10-27 17:37:43,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4265 to 4073. [2020-10-27 17:37:43,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4073 states. [2020-10-27 17:37:43,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4073 states to 4073 states and 5262 transitions. [2020-10-27 17:37:43,637 INFO L78 Accepts]: Start accepts. Automaton has 4073 states and 5262 transitions. Word has length 243 [2020-10-27 17:37:43,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:43,637 INFO L481 AbstractCegarLoop]: Abstraction has 4073 states and 5262 transitions. [2020-10-27 17:37:43,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:37:43,637 INFO L276 IsEmpty]: Start isEmpty. Operand 4073 states and 5262 transitions. [2020-10-27 17:37:43,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-27 17:37:43,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:43,647 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:37:43,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:37:43,647 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:43,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:43,648 INFO L82 PathProgramCache]: Analyzing trace with hash -804904227, now seen corresponding path program 1 times [2020-10-27 17:37:43,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:43,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900163732] [2020-10-27 17:37:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:43,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:43,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:46,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:46,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-27 17:37:46,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:37:46,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2532 [2020-10-27 17:37:46,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:46,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:46,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 17:37:46,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 17:37:46,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:46,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:46,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:46,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:46,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:46,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:46,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:37:46,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:46,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:46,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:46,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:46,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:46,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 17:37:46,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 17:37:46,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:46,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:46,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 17:37:46,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:46,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 17:37:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:46,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:46,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:46,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:37:46,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:46,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-27 17:37:46,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:37:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 17:37:46,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:46,974 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:37:46,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900163732] [2020-10-27 17:37:46,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:46,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:37:46,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60896368] [2020-10-27 17:37:46,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:37:46,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:46,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:37:46,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:37:46,978 INFO L87 Difference]: Start difference. First operand 4073 states and 5262 transitions. Second operand 7 states. [2020-10-27 17:37:50,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:50,559 INFO L93 Difference]: Finished difference Result 8801 states and 11686 transitions. [2020-10-27 17:37:50,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:37:50,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-27 17:37:50,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:50,585 INFO L225 Difference]: With dead ends: 8801 [2020-10-27 17:37:50,585 INFO L226 Difference]: Without dead ends: 4734 [2020-10-27 17:37:50,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 17:37:50,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2020-10-27 17:37:50,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 4683. [2020-10-27 17:37:50,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4683 states. [2020-10-27 17:37:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4683 states to 4683 states and 5928 transitions. [2020-10-27 17:37:50,750 INFO L78 Accepts]: Start accepts. Automaton has 4683 states and 5928 transitions. Word has length 273 [2020-10-27 17:37:50,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:50,751 INFO L481 AbstractCegarLoop]: Abstraction has 4683 states and 5928 transitions. [2020-10-27 17:37:50,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:37:50,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4683 states and 5928 transitions. [2020-10-27 17:37:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-27 17:37:50,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:50,766 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:37:50,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:37:50,766 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:50,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:50,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1372003236, now seen corresponding path program 1 times [2020-10-27 17:37:50,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:50,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988875866] [2020-10-27 17:37:50,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:50,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:50,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:51,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:55,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:55,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-27 17:37:55,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:37:55,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 17:37:55,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:55,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:55,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-27 17:37:55,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 17:37:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:55,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:55,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:55,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:55,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:55,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:55,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:37:55,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:55,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:55,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:55,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:55,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:56,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:56,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:56,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:56,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 17:37:56,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:56,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 17:37:56,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:56,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:56,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:56,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 17:37:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:56,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:56,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:56,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 17:37:56,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:56,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 17:37:56,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:56,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:56,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 17:37:56,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:56,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-27 17:37:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:56,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:56,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:56,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:37:56,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:56,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-27 17:37:56,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:56,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:56,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:37:56,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 17:37:56,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-27 17:37:56,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988875866] [2020-10-27 17:37:56,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:56,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:37:56,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344600469] [2020-10-27 17:37:56,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:37:56,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:56,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:37:56,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:37:56,738 INFO L87 Difference]: Start difference. First operand 4683 states and 5928 transitions. Second operand 7 states. [2020-10-27 17:38:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:01,567 INFO L93 Difference]: Finished difference Result 12936 states and 17439 transitions. [2020-10-27 17:38:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:38:01,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 375 [2020-10-27 17:38:01,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:01,622 INFO L225 Difference]: With dead ends: 12936 [2020-10-27 17:38:01,622 INFO L226 Difference]: Without dead ends: 8259 [2020-10-27 17:38:01,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:38:01,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8259 states. [2020-10-27 17:38:01,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8259 to 7738. [2020-10-27 17:38:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7738 states. [2020-10-27 17:38:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7738 states to 7738 states and 9789 transitions. [2020-10-27 17:38:01,921 INFO L78 Accepts]: Start accepts. Automaton has 7738 states and 9789 transitions. Word has length 375 [2020-10-27 17:38:01,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:01,923 INFO L481 AbstractCegarLoop]: Abstraction has 7738 states and 9789 transitions. [2020-10-27 17:38:01,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:38:01,923 INFO L276 IsEmpty]: Start isEmpty. Operand 7738 states and 9789 transitions. [2020-10-27 17:38:01,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-27 17:38:01,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:01,952 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:38:01,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:38:01,952 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:01,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:01,954 INFO L82 PathProgramCache]: Analyzing trace with hash 2036281957, now seen corresponding path program 1 times [2020-10-27 17:38:01,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:01,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949817784] [2020-10-27 17:38:01,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:02,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:02,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:03,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:07,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:07,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-10-27 17:38:07,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:38:07,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 17:38:07,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-27 17:38:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 17:38:07,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:07,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:07,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:07,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:07,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:07,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:07,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:38:07,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:07,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:07,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:07,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:07,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:07,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:07,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:38:07,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:07,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 17:38:07,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:07,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:07,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:07,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 17:38:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:07,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:07,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:07,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:38:07,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 17:38:07,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 17:38:07,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:07,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-27 17:38:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:07,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:07,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:38:07,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:07,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 17:38:07,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:07,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:07,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:07,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 17:38:07,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 17:38:07,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949817784] [2020-10-27 17:38:07,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:07,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:38:07,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527946965] [2020-10-27 17:38:07,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:38:07,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:07,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:38:07,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:38:07,898 INFO L87 Difference]: Start difference. First operand 7738 states and 9789 transitions. Second operand 7 states. [2020-10-27 17:38:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:11,336 INFO L93 Difference]: Finished difference Result 15500 states and 19720 transitions. [2020-10-27 17:38:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:38:11,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 390 [2020-10-27 17:38:11,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:11,373 INFO L225 Difference]: With dead ends: 15500 [2020-10-27 17:38:11,373 INFO L226 Difference]: Without dead ends: 9282 [2020-10-27 17:38:11,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:38:11,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9282 states. [2020-10-27 17:38:11,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9282 to 9082. [2020-10-27 17:38:11,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9082 states. [2020-10-27 17:38:11,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9082 states to 9082 states and 11528 transitions. [2020-10-27 17:38:11,670 INFO L78 Accepts]: Start accepts. Automaton has 9082 states and 11528 transitions. Word has length 390 [2020-10-27 17:38:11,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:11,671 INFO L481 AbstractCegarLoop]: Abstraction has 9082 states and 11528 transitions. [2020-10-27 17:38:11,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:38:11,671 INFO L276 IsEmpty]: Start isEmpty. Operand 9082 states and 11528 transitions. [2020-10-27 17:38:11,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-27 17:38:11,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:11,702 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:38:11,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 17:38:11,702 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:11,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:11,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1352934421, now seen corresponding path program 1 times [2020-10-27 17:38:11,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:11,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053645353] [2020-10-27 17:38:11,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:11,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:11,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:12,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:16,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:16,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-27 17:38:16,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:38:16,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4338 [2020-10-27 17:38:16,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:38:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 17:38:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-27 17:38:16,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:16,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:16,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:16,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:16,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:16,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:38:16,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:16,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:16,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:16,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:16,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:16,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:16,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:16,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:16,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 17:38:16,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:16,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 17:38:16,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:16,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:16,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:16,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 17:38:16,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:16,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 17:38:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:16,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:16,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:16,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:16,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:38:16,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:38:16,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-27 17:38:16,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 17:38:16,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:16,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-27 17:38:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:17,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:17,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:17,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:38:17,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:17,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 17:38:17,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 17:38:17,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 290 proven. 4 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-27 17:38:17,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053645353] [2020-10-27 17:38:17,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:17,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:38:17,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604267484] [2020-10-27 17:38:17,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:38:17,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:17,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:38:17,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:38:17,362 INFO L87 Difference]: Start difference. First operand 9082 states and 11528 transitions. Second operand 7 states. [2020-10-27 17:38:21,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:21,489 INFO L93 Difference]: Finished difference Result 23188 states and 32492 transitions. [2020-10-27 17:38:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:38:21,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 410 [2020-10-27 17:38:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:21,565 INFO L225 Difference]: With dead ends: 23188 [2020-10-27 17:38:21,565 INFO L226 Difference]: Without dead ends: 14116 [2020-10-27 17:38:21,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:38:21,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14116 states. [2020-10-27 17:38:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14116 to 12939. [2020-10-27 17:38:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12939 states. [2020-10-27 17:38:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12939 states to 12939 states and 16094 transitions. [2020-10-27 17:38:22,070 INFO L78 Accepts]: Start accepts. Automaton has 12939 states and 16094 transitions. Word has length 410 [2020-10-27 17:38:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:22,071 INFO L481 AbstractCegarLoop]: Abstraction has 12939 states and 16094 transitions. [2020-10-27 17:38:22,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:38:22,071 INFO L276 IsEmpty]: Start isEmpty. Operand 12939 states and 16094 transitions. [2020-10-27 17:38:22,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-10-27 17:38:22,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:22,112 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:38:22,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 17:38:22,112 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:22,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:22,113 INFO L82 PathProgramCache]: Analyzing trace with hash 437103596, now seen corresponding path program 1 times [2020-10-27 17:38:22,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:22,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041682270] [2020-10-27 17:38:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:22,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:22,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:22,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:27,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:27,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-27 17:38:27,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:38:27,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-27 17:38:27,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:27,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:27,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 17:38:27,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 17:38:27,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:27,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:27,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:27,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:27,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:27,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:27,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:38:27,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:27,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:27,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:27,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:27,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:27,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:27,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:27,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:38:27,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:27,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 17:38:27,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:27,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:27,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 17:38:27,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:27,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 17:38:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:27,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:27,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:27,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:38:27,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:27,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 17:38:27,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:27,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:27,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:27,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 17:38:27,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:27,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-27 17:38:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:28,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:28,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:28,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:38:28,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:28,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 17:38:28,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:28,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:28,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:38:28,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:28,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 250 proven. 134 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-27 17:38:28,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041682270] [2020-10-27 17:38:28,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:28,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:38:28,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653586529] [2020-10-27 17:38:28,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:38:28,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:28,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:38:28,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:38:28,261 INFO L87 Difference]: Start difference. First operand 12939 states and 16094 transitions. Second operand 7 states. [2020-10-27 17:38:33,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:33,515 INFO L93 Difference]: Finished difference Result 28870 states and 37740 transitions. [2020-10-27 17:38:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:38:33,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 453 [2020-10-27 17:38:33,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:33,582 INFO L225 Difference]: With dead ends: 28870 [2020-10-27 17:38:33,582 INFO L226 Difference]: Without dead ends: 15941 [2020-10-27 17:38:33,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:38:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15941 states. [2020-10-27 17:38:34,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15941 to 15615. [2020-10-27 17:38:34,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15615 states. [2020-10-27 17:38:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15615 states to 15615 states and 19167 transitions. [2020-10-27 17:38:34,092 INFO L78 Accepts]: Start accepts. Automaton has 15615 states and 19167 transitions. Word has length 453 [2020-10-27 17:38:34,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:34,093 INFO L481 AbstractCegarLoop]: Abstraction has 15615 states and 19167 transitions. [2020-10-27 17:38:34,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:38:34,093 INFO L276 IsEmpty]: Start isEmpty. Operand 15615 states and 19167 transitions. [2020-10-27 17:38:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-27 17:38:34,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:34,142 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:38:34,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 17:38:34,143 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:34,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:34,143 INFO L82 PathProgramCache]: Analyzing trace with hash -152123919, now seen corresponding path program 1 times [2020-10-27 17:38:34,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:34,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414504131] [2020-10-27 17:38:34,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:34,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:34,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:34,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:37,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:37,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 500 [2020-10-27 17:38:37,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:38:37,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3505 [2020-10-27 17:38:37,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:37,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:37,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 17:38:37,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 17:38:37,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:37,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:37,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:37,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:37,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:38:37,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:37,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:37,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:37,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:37,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:37,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:38:37,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:37,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 17:38:37,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 17:38:37,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:37,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 17:38:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:37,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:38,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:38,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 17:38:38,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:38,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 17:38:38,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:38,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:38,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:38,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 17:38:38,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:38,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 17:38:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:38,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:38,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:38,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:38:38,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 17:38:38,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:38:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:38,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-27 17:38:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:38,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:38,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:38,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:38:38,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 17:38:38,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:38:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 239 proven. 168 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-27 17:38:38,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414504131] [2020-10-27 17:38:38,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:38,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:38:38,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790087777] [2020-10-27 17:38:38,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:38:38,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:38,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:38:38,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:38:38,488 INFO L87 Difference]: Start difference. First operand 15615 states and 19167 transitions. Second operand 7 states. [2020-10-27 17:38:43,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:43,478 INFO L93 Difference]: Finished difference Result 29592 states and 38067 transitions. [2020-10-27 17:38:43,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:38:43,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 482 [2020-10-27 17:38:43,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:43,551 INFO L225 Difference]: With dead ends: 29592 [2020-10-27 17:38:43,551 INFO L226 Difference]: Without dead ends: 17597 [2020-10-27 17:38:43,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:38:43,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17597 states. [2020-10-27 17:38:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17597 to 16373. [2020-10-27 17:38:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16373 states. [2020-10-27 17:38:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16373 states to 16373 states and 19983 transitions. [2020-10-27 17:38:44,111 INFO L78 Accepts]: Start accepts. Automaton has 16373 states and 19983 transitions. Word has length 482 [2020-10-27 17:38:44,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:44,112 INFO L481 AbstractCegarLoop]: Abstraction has 16373 states and 19983 transitions. [2020-10-27 17:38:44,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:38:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 16373 states and 19983 transitions. [2020-10-27 17:38:44,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2020-10-27 17:38:44,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:44,188 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:38:44,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 17:38:44,188 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:44,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:44,189 INFO L82 PathProgramCache]: Analyzing trace with hash -119516830, now seen corresponding path program 1 times [2020-10-27 17:38:44,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:44,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283914989] [2020-10-27 17:38:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:44,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:44,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:48,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:48,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 536 [2020-10-27 17:38:48,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:38:48,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4285 [2020-10-27 17:38:48,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:48,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:48,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 17:38:48,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 17:38:48,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:48,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:48,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:48,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:48,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:48,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:38:48,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:48,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:48,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:48,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:48,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:48,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 17:38:48,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:48,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 17:38:48,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:48,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 17:38:48,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 17:38:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:48,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:48,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 17:38:48,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:48,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 17:38:48,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:48,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:48,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:48,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 17:38:48,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:49,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 17:38:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:49,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:49,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:49,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:38:49,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:49,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 17:38:49,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:38:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:49,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:49,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-27 17:38:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:49,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:49,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:49,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:38:49,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:49,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 17:38:49,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:49,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:49,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:38:49,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:49,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:49,386 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 251 proven. 168 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-27 17:38:49,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283914989] [2020-10-27 17:38:49,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:49,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:38:49,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239699917] [2020-10-27 17:38:49,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:38:49,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:49,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:38:49,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:38:49,388 INFO L87 Difference]: Start difference. First operand 16373 states and 19983 transitions. Second operand 7 states. [2020-10-27 17:38:52,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:52,633 INFO L93 Difference]: Finished difference Result 34443 states and 42013 transitions. [2020-10-27 17:38:52,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:38:52,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 518 [2020-10-27 17:38:52,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:52,691 INFO L225 Difference]: With dead ends: 34443 [2020-10-27 17:38:52,691 INFO L226 Difference]: Without dead ends: 18288 [2020-10-27 17:38:52,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:38:52,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18288 states. [2020-10-27 17:38:53,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18288 to 18280. [2020-10-27 17:38:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18280 states. [2020-10-27 17:38:53,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18280 states to 18280 states and 22092 transitions. [2020-10-27 17:38:53,156 INFO L78 Accepts]: Start accepts. Automaton has 18280 states and 22092 transitions. Word has length 518 [2020-10-27 17:38:53,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:53,157 INFO L481 AbstractCegarLoop]: Abstraction has 18280 states and 22092 transitions. [2020-10-27 17:38:53,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:38:53,157 INFO L276 IsEmpty]: Start isEmpty. Operand 18280 states and 22092 transitions. [2020-10-27 17:38:53,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-27 17:38:53,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:53,191 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:38:53,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 17:38:53,192 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:53,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:53,192 INFO L82 PathProgramCache]: Analyzing trace with hash 238645371, now seen corresponding path program 1 times [2020-10-27 17:38:53,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:53,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400218954] [2020-10-27 17:38:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:53,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:53,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:55,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:55,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:55,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-27 17:38:55,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:38:55,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2253 [2020-10-27 17:38:55,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:55,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 17:38:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:38:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 358 [2020-10-27 17:38:55,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:55,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:55,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:55,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:55,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:55,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:55,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 17:38:55,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:38:55,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:55,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:55,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:55,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:55,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 17:38:55,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:55,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 17:38:55,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 17:38:55,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:56,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 17:38:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:56,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:56,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:56,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 17:38:56,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:56,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 17:38:56,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:38:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 17:38:56,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:56,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 17:38:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:56,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:56,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:56,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:56,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:38:56,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:38:56,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-27 17:38:56,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 17:38:56,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:56,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-27 17:38:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:56,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:56,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:56,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:38:56,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:56,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 17:38:56,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:56,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:56,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:38:56,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:56,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 249 proven. 543 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 17:38:57,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400218954] [2020-10-27 17:38:57,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:57,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 17:38:57,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746104370] [2020-10-27 17:38:57,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 17:38:57,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:57,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 17:38:57,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 17:38:57,485 INFO L87 Difference]: Start difference. First operand 18280 states and 22092 transitions. Second operand 11 states. [2020-10-27 17:38:57,684 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-27 17:39:04,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:04,250 INFO L93 Difference]: Finished difference Result 37985 states and 47453 transitions. [2020-10-27 17:39:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 17:39:04,251 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 534 [2020-10-27 17:39:04,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:04,341 INFO L225 Difference]: With dead ends: 37985 [2020-10-27 17:39:04,342 INFO L226 Difference]: Without dead ends: 23321 [2020-10-27 17:39:04,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-10-27 17:39:04,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23321 states. [2020-10-27 17:39:04,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23321 to 22970. [2020-10-27 17:39:04,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22970 states. [2020-10-27 17:39:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22970 states to 22970 states and 27482 transitions. [2020-10-27 17:39:05,031 INFO L78 Accepts]: Start accepts. Automaton has 22970 states and 27482 transitions. Word has length 534 [2020-10-27 17:39:05,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:05,032 INFO L481 AbstractCegarLoop]: Abstraction has 22970 states and 27482 transitions. [2020-10-27 17:39:05,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 17:39:05,032 INFO L276 IsEmpty]: Start isEmpty. Operand 22970 states and 27482 transitions. [2020-10-27 17:39:05,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-10-27 17:39:05,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:05,074 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:39:05,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 17:39:05,075 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:05,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:05,075 INFO L82 PathProgramCache]: Analyzing trace with hash -752851322, now seen corresponding path program 1 times [2020-10-27 17:39:05,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:05,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078058333] [2020-10-27 17:39:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:05,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:05,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:05,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:08,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:08,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 569 [2020-10-27 17:39:08,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:39:08,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3618 [2020-10-27 17:39:08,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:08,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:08,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-27 17:39:08,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 17:39:08,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:08,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:08,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:08,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:08,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:08,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:08,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:39:08,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:08,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:08,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:08,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:08,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:09,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:09,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 17:39:09,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:09,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 17:39:09,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 17:39:09,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:09,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 17:39:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:09,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:09,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:09,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 17:39:09,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 17:39:09,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:39:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 17:39:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:09,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 17:39:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:09,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:09,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:09,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:39:09,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:09,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 17:39:09,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:09,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:09,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:39:09,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:09,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:09,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-27 17:39:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:09,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:09,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:39:09,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:09,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 17:39:09,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:39:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:09,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 251 proven. 168 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-27 17:39:09,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078058333] [2020-10-27 17:39:09,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:09,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:39:09,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134996717] [2020-10-27 17:39:09,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:39:09,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:09,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:39:09,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:39:09,644 INFO L87 Difference]: Start difference. First operand 22970 states and 27482 transitions. Second operand 7 states. [2020-10-27 17:39:15,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:15,067 INFO L93 Difference]: Finished difference Result 42270 states and 52714 transitions. [2020-10-27 17:39:15,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:39:15,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 551 [2020-10-27 17:39:15,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:15,163 INFO L225 Difference]: With dead ends: 42270 [2020-10-27 17:39:15,163 INFO L226 Difference]: Without dead ends: 24892 [2020-10-27 17:39:15,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:39:15,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24892 states. [2020-10-27 17:39:15,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24892 to 23160. [2020-10-27 17:39:15,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23160 states. [2020-10-27 17:39:15,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23160 states to 23160 states and 27634 transitions. [2020-10-27 17:39:15,868 INFO L78 Accepts]: Start accepts. Automaton has 23160 states and 27634 transitions. Word has length 551 [2020-10-27 17:39:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:15,868 INFO L481 AbstractCegarLoop]: Abstraction has 23160 states and 27634 transitions. [2020-10-27 17:39:15,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:39:15,868 INFO L276 IsEmpty]: Start isEmpty. Operand 23160 states and 27634 transitions. [2020-10-27 17:39:15,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-10-27 17:39:15,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:15,911 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:39:15,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 17:39:15,911 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:15,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:15,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1946418804, now seen corresponding path program 1 times [2020-10-27 17:39:15,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:15,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343922593] [2020-10-27 17:39:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:16,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:16,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:17,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:19,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:21,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:21,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 591 [2020-10-27 17:39:21,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:39:21,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-27 17:39:21,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:39:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-27 17:39:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-27 17:39:21,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:21,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:21,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:21,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:21,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:21,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:21,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:39:21,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:21,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:21,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:21,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:21,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:21,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:21,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 17:39:21,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:21,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-27 17:39:21,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-27 17:39:21,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:21,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-27 17:39:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:21,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:21,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:21,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 17:39:21,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:21,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 17:39:21,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:21,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:39:21,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:39:21,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 17:39:21,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:22,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-27 17:39:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:22,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:22,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:22,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:22,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:39:22,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:39:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-27 17:39:22,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:39:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 17:39:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:22,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-10-27 17:39:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:22,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:22,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:22,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:39:22,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 17:39:22,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:39:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 387 proven. 298 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-27 17:39:22,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343922593] [2020-10-27 17:39:22,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:22,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 17:39:22,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705071420] [2020-10-27 17:39:22,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 17:39:22,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:22,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 17:39:22,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-27 17:39:22,850 INFO L87 Difference]: Start difference. First operand 23160 states and 27634 transitions. Second operand 10 states. [2020-10-27 17:39:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:29,630 INFO L93 Difference]: Finished difference Result 51487 states and 64260 transitions. [2020-10-27 17:39:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 17:39:29,631 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 573 [2020-10-27 17:39:29,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:29,762 INFO L225 Difference]: With dead ends: 51487 [2020-10-27 17:39:29,763 INFO L226 Difference]: Without dead ends: 33919 [2020-10-27 17:39:29,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-27 17:39:29,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33919 states. [2020-10-27 17:39:30,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33919 to 31977. [2020-10-27 17:39:30,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31977 states. [2020-10-27 17:39:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31977 states to 31977 states and 38064 transitions. [2020-10-27 17:39:30,871 INFO L78 Accepts]: Start accepts. Automaton has 31977 states and 38064 transitions. Word has length 573 [2020-10-27 17:39:30,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:30,872 INFO L481 AbstractCegarLoop]: Abstraction has 31977 states and 38064 transitions. [2020-10-27 17:39:30,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 17:39:30,872 INFO L276 IsEmpty]: Start isEmpty. Operand 31977 states and 38064 transitions. [2020-10-27 17:39:30,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2020-10-27 17:39:30,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:30,932 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:39:30,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 17:39:30,932 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:30,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:30,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1711497149, now seen corresponding path program 1 times [2020-10-27 17:39:30,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:30,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103392560] [2020-10-27 17:39:30,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:31,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:31,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:36,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:36,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 691 [2020-10-27 17:39:36,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:39:36,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 17:39:36,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:36,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:36,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 238 [2020-10-27 17:39:36,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 17:39:36,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:36,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:36,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:36,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:36,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:36,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:36,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:39:36,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:36,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:36,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:36,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:36,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:36,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:36,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:36,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 17:39:36,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:36,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 17:39:36,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:36,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:36,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 17:39:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:36,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:36,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:36,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 17:39:36,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-27 17:39:36,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 17:39:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:36,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-27 17:39:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:36,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:36,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:36,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 17:39:36,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:36,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 17:39:36,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:36,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:36,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:39:36,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 17:39:36,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:36,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-27 17:39:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:36,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:36,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:36,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:39:36,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:36,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 17:39:36,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:39:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:36,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:37,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-10-27 17:39:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:37,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:37,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:37,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:39:37,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:37,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 17:39:37,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:37,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:37,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:39:37,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:37,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 426 proven. 242 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2020-10-27 17:39:37,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103392560] [2020-10-27 17:39:37,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:37,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:39:37,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124398208] [2020-10-27 17:39:37,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:39:37,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:37,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:39:37,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:39:37,409 INFO L87 Difference]: Start difference. First operand 31977 states and 38064 transitions. Second operand 7 states. [2020-10-27 17:39:41,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:41,507 INFO L93 Difference]: Finished difference Result 65646 states and 81041 transitions. [2020-10-27 17:39:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:39:41,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 671 [2020-10-27 17:39:41,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:41,611 INFO L225 Difference]: With dead ends: 65646 [2020-10-27 17:39:41,611 INFO L226 Difference]: Without dead ends: 34259 [2020-10-27 17:39:41,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 17:39:41,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34259 states. [2020-10-27 17:39:42,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34259 to 32193. [2020-10-27 17:39:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32193 states. [2020-10-27 17:39:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32193 states to 32193 states and 38111 transitions. [2020-10-27 17:39:42,566 INFO L78 Accepts]: Start accepts. Automaton has 32193 states and 38111 transitions. Word has length 671 [2020-10-27 17:39:42,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:42,566 INFO L481 AbstractCegarLoop]: Abstraction has 32193 states and 38111 transitions. [2020-10-27 17:39:42,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:39:42,567 INFO L276 IsEmpty]: Start isEmpty. Operand 32193 states and 38111 transitions. [2020-10-27 17:39:42,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2020-10-27 17:39:42,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:42,621 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:39:42,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 17:39:42,621 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:42,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1804632749, now seen corresponding path program 1 times [2020-10-27 17:39:42,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:42,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361072131] [2020-10-27 17:39:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:42,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:43,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:43,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:47,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:47,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 852 [2020-10-27 17:39:47,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:39:47,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 17:39:47,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:47,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:47,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 524 [2020-10-27 17:39:47,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 17:39:47,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:47,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:48,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:48,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:48,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:48,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:39:48,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:48,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:48,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:48,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:48,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:48,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:48,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:48,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:48,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:39:48,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:48,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 17:39:48,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:48,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:48,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:48,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:48,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:48,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 17:39:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:48,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:48,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:48,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 17:39:48,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:48,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 17:39:48,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:48,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:48,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-27 17:39:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:48,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:48,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:48,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 17:39:48,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:48,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 17:39:48,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:48,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:48,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-27 17:39:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:48,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:48,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:48,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 17:39:48,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:48,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 17:39:48,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:48,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:48,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:48,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-27 17:39:48,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:48,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-10-27 17:39:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:48,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:48,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:48,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:39:48,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:48,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 17:39:48,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:48,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:48,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:39:48,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 17:39:48,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:48,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 653 [2020-10-27 17:39:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:48,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:48,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:39:48,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:48,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 17:39:48,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:39:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:48,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2024 backedges. 745 proven. 134 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2020-10-27 17:39:49,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361072131] [2020-10-27 17:39:49,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:49,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:39:49,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525869396] [2020-10-27 17:39:49,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:39:49,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:49,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:39:49,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:39:49,273 INFO L87 Difference]: Start difference. First operand 32193 states and 38111 transitions. Second operand 7 states. [2020-10-27 17:39:55,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:55,131 INFO L93 Difference]: Finished difference Result 66300 states and 80928 transitions. [2020-10-27 17:39:55,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:39:55,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 830 [2020-10-27 17:39:55,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:55,245 INFO L225 Difference]: With dead ends: 66300 [2020-10-27 17:39:55,245 INFO L226 Difference]: Without dead ends: 34699 [2020-10-27 17:39:55,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:39:55,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34699 states. [2020-10-27 17:39:56,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34699 to 34073. [2020-10-27 17:39:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34073 states. [2020-10-27 17:39:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34073 states to 34073 states and 39833 transitions. [2020-10-27 17:39:56,388 INFO L78 Accepts]: Start accepts. Automaton has 34073 states and 39833 transitions. Word has length 830 [2020-10-27 17:39:56,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:56,389 INFO L481 AbstractCegarLoop]: Abstraction has 34073 states and 39833 transitions. [2020-10-27 17:39:56,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:39:56,390 INFO L276 IsEmpty]: Start isEmpty. Operand 34073 states and 39833 transitions. [2020-10-27 17:39:56,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2020-10-27 17:39:56,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:56,470 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:39:56,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 17:39:56,470 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:56,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2005288069, now seen corresponding path program 1 times [2020-10-27 17:39:56,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:56,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295493746] [2020-10-27 17:39:56,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:56,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:57,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:57,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:01,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:01,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1007 [2020-10-27 17:40:01,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:40:01,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-27 17:40:01,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:01,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:01,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 367 [2020-10-27 17:40:01,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 17:40:01,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:01,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:02,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:02,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:02,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:02,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:02,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:40:02,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:02,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:02,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:02,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:02,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:40:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:02,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:02,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:02,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:40:02,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:02,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 17:40:02,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:02,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:02,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:02,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:02,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:02,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 17:40:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:02,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:02,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:02,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 17:40:02,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:02,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 17:40:02,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:02,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:02,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-27 17:40:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:02,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:02,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 17:40:02,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:02,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 17:40:02,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:02,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:02,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:02,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:40:02,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:02,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-27 17:40:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:02,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:02,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:02,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:40:02,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:02,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 17:40:02,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:02,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:02,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:40:02,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 17:40:02,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:02,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-27 17:40:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:02,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:02,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:02,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 17:40:02,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:02,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 17:40:02,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-27 17:40:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:02,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:02,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2020-10-27 17:40:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:02,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:02,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:02,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 17:40:02,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:02,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 17:40:02,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 17:40:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:02,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:02,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2020-10-27 17:40:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:02,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:02,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:02,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:40:02,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:02,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 17:40:02,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:02,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:02,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:40:02,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:02,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:02,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 804 [2020-10-27 17:40:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:02,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:02,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:02,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:40:02,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 17:40:02,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:40:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3247 backedges. 651 proven. 358 refuted. 0 times theorem prover too weak. 2238 trivial. 0 not checked. [2020-10-27 17:40:03,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295493746] [2020-10-27 17:40:03,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:40:03,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:40:03,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617992321] [2020-10-27 17:40:03,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:40:03,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:03,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:40:03,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:40:03,560 INFO L87 Difference]: Start difference. First operand 34073 states and 39833 transitions. Second operand 7 states. [2020-10-27 17:40:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:40:07,327 INFO L93 Difference]: Finished difference Result 62376 states and 72875 transitions. [2020-10-27 17:40:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:40:07,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 981 [2020-10-27 17:40:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:40:07,421 INFO L225 Difference]: With dead ends: 62376 [2020-10-27 17:40:07,422 INFO L226 Difference]: Without dead ends: 33474 [2020-10-27 17:40:07,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:40:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33474 states. [2020-10-27 17:40:08,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33474 to 31736. [2020-10-27 17:40:08,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31736 states. [2020-10-27 17:40:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31736 states to 31736 states and 36502 transitions. [2020-10-27 17:40:08,230 INFO L78 Accepts]: Start accepts. Automaton has 31736 states and 36502 transitions. Word has length 981 [2020-10-27 17:40:08,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:40:08,230 INFO L481 AbstractCegarLoop]: Abstraction has 31736 states and 36502 transitions. [2020-10-27 17:40:08,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:40:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 31736 states and 36502 transitions. [2020-10-27 17:40:08,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2020-10-27 17:40:08,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:08,277 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:40:08,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 17:40:08,277 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:08,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:08,278 INFO L82 PathProgramCache]: Analyzing trace with hash -133382907, now seen corresponding path program 1 times [2020-10-27 17:40:08,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:08,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172359310] [2020-10-27 17:40:08,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:08,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:08,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:09,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:12,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:13,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:13,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1086 [2020-10-27 17:40:13,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:40:13,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-27 17:40:13,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 446 [2020-10-27 17:40:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 17:40:13,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:13,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:13,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:13,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:13,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:13,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:13,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:40:13,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:13,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:13,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:13,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:13,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:13,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:40:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:13,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:13,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:13,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:40:13,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:13,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 17:40:13,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:13,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:13,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 17:40:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:13,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:13,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:13,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 17:40:13,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:13,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 17:40:13,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:13,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:13,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-27 17:40:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:13,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:13,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:13,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 17:40:13,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:13,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 17:40:13,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:13,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:13,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-27 17:40:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:13,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:13,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:14,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 17:40:14,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:14,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 17:40:14,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 17:40:14,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:14,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2020-10-27 17:40:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:14,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:14,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:14,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:40:14,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:14,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 17:40:14,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:14,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:14,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:40:14,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 17:40:14,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:14,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2020-10-27 17:40:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:14,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:14,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 17:40:14,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 17:40:14,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-27 17:40:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:14,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:14,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2020-10-27 17:40:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:14,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:14,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 17:40:14,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:14,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 17:40:14,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 17:40:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:14,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-10-27 17:40:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:14,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:14,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:14,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:40:14,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:14,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 17:40:14,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:40:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:14,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:14,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 881 [2020-10-27 17:40:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:14,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:14,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:14,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:40:14,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:14,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 17:40:14,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 17:40:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:14,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3903 backedges. 786 proven. 358 refuted. 0 times theorem prover too weak. 2759 trivial. 0 not checked. [2020-10-27 17:40:15,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172359310] [2020-10-27 17:40:15,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:40:15,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:40:15,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19825486] [2020-10-27 17:40:15,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:40:15,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:15,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:40:15,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:40:15,373 INFO L87 Difference]: Start difference. First operand 31736 states and 36502 transitions. Second operand 7 states. [2020-10-27 17:40:15,511 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-27 17:40:19,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:40:19,028 INFO L93 Difference]: Finished difference Result 57552 states and 66307 transitions. [2020-10-27 17:40:19,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:40:19,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1058 [2020-10-27 17:40:19,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:40:19,117 INFO L225 Difference]: With dead ends: 57552 [2020-10-27 17:40:19,118 INFO L226 Difference]: Without dead ends: 32529 [2020-10-27 17:40:19,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:40:19,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32529 states. [2020-10-27 17:40:20,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32529 to 31535. [2020-10-27 17:40:20,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31535 states.