/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:58:25,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:58:25,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:58:25,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:58:25,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:58:25,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:58:25,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:58:25,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:58:25,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:58:25,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:58:25,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:58:25,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:58:25,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:58:25,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:58:25,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:58:25,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:58:25,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:58:25,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:58:25,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:58:25,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:58:25,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:58:25,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:58:25,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:58:25,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:58:25,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:58:25,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:58:25,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:58:25,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:58:25,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:58:25,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:58:25,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:58:25,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:58:25,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:58:25,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:58:25,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:58:25,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:58:25,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:58:25,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:58:25,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:58:25,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:58:25,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:58:25,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:58:25,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:58:25,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:58:25,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:58:25,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:58:25,948 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:58:25,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:58:25,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:58:25,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:58:25,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:58:25,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:58:25,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:58:25,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:58:25,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:58:25,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:58:25,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:58:25,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:58:25,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:58:25,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:58:25,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:58:25,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:58:25,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:58:25,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:58:25,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:58:25,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:58:25,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:58:25,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:58:25,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:58:25,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:58:25,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:58:25,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:58:26,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:58:26,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:58:26,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:58:26,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:58:26,368 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:58:26,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label34.c [2020-10-26 23:58:26,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4902cf20a/b35c20a64a1e4f9a8f8ce0ae412417d8/FLAGed0b11b84 [2020-10-26 23:58:27,358 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:58:27,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label34.c [2020-10-26 23:58:27,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4902cf20a/b35c20a64a1e4f9a8f8ce0ae412417d8/FLAGed0b11b84 [2020-10-26 23:58:27,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4902cf20a/b35c20a64a1e4f9a8f8ce0ae412417d8 [2020-10-26 23:58:27,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:58:27,408 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:58:27,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:58:27,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:58:27,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:58:27,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:58:27" (1/1) ... [2020-10-26 23:58:27,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b40362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:27, skipping insertion in model container [2020-10-26 23:58:27,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:58:27" (1/1) ... [2020-10-26 23:58:27,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:58:27,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:58:28,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:58:28,162 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:58:28,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:58:28,569 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:58:28,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:28 WrapperNode [2020-10-26 23:58:28,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:58:28,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:58:28,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:58:28,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:58:28,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:28" (1/1) ... [2020-10-26 23:58:28,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:28" (1/1) ... [2020-10-26 23:58:28,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:28" (1/1) ... [2020-10-26 23:58:28,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:28" (1/1) ... [2020-10-26 23:58:28,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:28" (1/1) ... [2020-10-26 23:58:28,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:28" (1/1) ... [2020-10-26 23:58:28,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:28" (1/1) ... [2020-10-26 23:58:28,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:58:28,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:58:28,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:58:28,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:58:28,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:58:28,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:58:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:58:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:58:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:58:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:58:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:58:28,890 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:58:28,890 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:58:28,891 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:58:28,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:58:28,892 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:58:28,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:58:28,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:58:28,892 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:58:28,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:58:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:58:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:58:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:58:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:58:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:58:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:58:31,629 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:58:31,630 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:58:31,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:58:31 BoogieIcfgContainer [2020-10-26 23:58:31,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:58:31,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:58:31,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:58:31,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:58:31,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:58:27" (1/3) ... [2020-10-26 23:58:31,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c35af56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:58:31, skipping insertion in model container [2020-10-26 23:58:31,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:28" (2/3) ... [2020-10-26 23:58:31,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c35af56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:58:31, skipping insertion in model container [2020-10-26 23:58:31,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:58:31" (3/3) ... [2020-10-26 23:58:31,645 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label34.c [2020-10-26 23:58:31,660 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:58:31,666 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:58:31,677 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:58:31,707 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:58:31,707 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:58:31,707 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:58:31,708 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:58:31,708 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:58:31,708 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:58:31,708 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:58:31,708 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:58:31,735 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:58:31,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-26 23:58:31,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:31,743 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] [2020-10-26 23:58:31,744 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:31,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:31,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1064636924, now seen corresponding path program 1 times [2020-10-26 23:58:31,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:31,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205747512] [2020-10-26 23:58:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:31,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:32,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:32,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 23:58:32,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-10-26 23:58:32,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:58:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 23:58:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:58:32,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:32,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:32,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:32,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:32,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:32,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:58:32,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:32,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:58:32,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205747512] [2020-10-26 23:58:32,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:58:32,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:58:32,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780140638] [2020-10-26 23:58:32,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:58:32,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:32,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:58:32,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:58:32,712 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-26 23:58:37,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:37,106 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-26 23:58:37,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:58:37,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-26 23:58:37,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:37,136 INFO L225 Difference]: With dead ends: 1174 [2020-10-26 23:58:37,137 INFO L226 Difference]: Without dead ends: 697 [2020-10-26 23:58:37,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:58:37,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-26 23:58:37,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-26 23:58:37,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-26 23:58:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-26 23:58:37,252 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 41 [2020-10-26 23:58:37,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:37,253 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-26 23:58:37,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:58:37,253 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-26 23:58:37,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-26 23:58:37,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:37,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:37,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:58:37,260 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:37,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:37,261 INFO L82 PathProgramCache]: Analyzing trace with hash 78798901, now seen corresponding path program 1 times [2020-10-26 23:58:37,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:37,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334289328] [2020-10-26 23:58:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:37,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:37,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:38,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:38,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-26 23:58:38,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:38,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 936 [2020-10-26 23:58:38,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:58:38,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:38,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:58:38,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:58:38,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:38,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:38,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:38,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:38,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:38,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:58:38,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:38,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:38,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:38,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:38,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:38,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:38,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:38,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:38,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:58:38,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:38,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 23:58:38,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:58:38,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:58:38,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334289328] [2020-10-26 23:58:38,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:58:38,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:58:38,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061711522] [2020-10-26 23:58:38,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:38,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:38,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:38,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:38,707 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 7 states. [2020-10-26 23:58:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:43,614 INFO L93 Difference]: Finished difference Result 1765 states and 2732 transitions. [2020-10-26 23:58:43,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:58:43,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-26 23:58:43,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:43,629 INFO L225 Difference]: With dead ends: 1765 [2020-10-26 23:58:43,630 INFO L226 Difference]: Without dead ends: 1081 [2020-10-26 23:58:43,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:58:43,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-10-26 23:58:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1042. [2020-10-26 23:58:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-10-26 23:58:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1495 transitions. [2020-10-26 23:58:43,740 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1495 transitions. Word has length 116 [2020-10-26 23:58:43,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:43,743 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1495 transitions. [2020-10-26 23:58:43,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1495 transitions. [2020-10-26 23:58:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-26 23:58:43,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:43,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:43,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:58:43,758 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:43,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:43,759 INFO L82 PathProgramCache]: Analyzing trace with hash -2130930851, now seen corresponding path program 1 times [2020-10-26 23:58:43,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:43,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657829166] [2020-10-26 23:58:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:43,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:44,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:44,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:44,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:58:44,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:44,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-26 23:58:44,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:58:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:44,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:58:44,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:44,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:44,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:44,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:44,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:44,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:44,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:58:44,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:44,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:44,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:44,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:44,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:58:44,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:44,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:45,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:45,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:58:45,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:45,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 23:58:45,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:58:45,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:45,166 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:58:45,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657829166] [2020-10-26 23:58:45,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:58:45,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:58:45,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901537170] [2020-10-26 23:58:45,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:58:45,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:45,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:58:45,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:58:45,172 INFO L87 Difference]: Start difference. First operand 1042 states and 1495 transitions. Second operand 8 states. [2020-10-26 23:58:52,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:52,575 INFO L93 Difference]: Finished difference Result 4194 states and 6203 transitions. [2020-10-26 23:58:52,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:58:52,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-10-26 23:58:52,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:52,598 INFO L225 Difference]: With dead ends: 4194 [2020-10-26 23:58:52,599 INFO L226 Difference]: Without dead ends: 3158 [2020-10-26 23:58:52,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:58:52,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2020-10-26 23:58:52,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 3137. [2020-10-26 23:58:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3137 states. [2020-10-26 23:58:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3137 states to 3137 states and 4230 transitions. [2020-10-26 23:58:52,737 INFO L78 Accepts]: Start accepts. Automaton has 3137 states and 4230 transitions. Word has length 117 [2020-10-26 23:58:52,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:52,739 INFO L481 AbstractCegarLoop]: Abstraction has 3137 states and 4230 transitions. [2020-10-26 23:58:52,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:58:52,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3137 states and 4230 transitions. [2020-10-26 23:58:52,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-26 23:58:52,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:52,750 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:58:52,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:58:52,751 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:52,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:52,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1041883218, now seen corresponding path program 1 times [2020-10-26 23:58:52,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:52,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920797238] [2020-10-26 23:58:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:52,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:52,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:53,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:54,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:54,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:55,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:57,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:57,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-26 23:58:57,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:58:57,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4322 [2020-10-26 23:58:57,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:58:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:58:57,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:57,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:57,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:57,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:57,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:57,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:57,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:58:57,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:57,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:57,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:57,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:57,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:57,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:57,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:58:57,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:57,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 23:58:57,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:58:57,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:57,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:58:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:57,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:57,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:57,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:58:57,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:57,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:58:57,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:58:57,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-26 23:58:57,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920797238] [2020-10-26 23:58:57,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:57,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:58:57,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050737550] [2020-10-26 23:58:57,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:57,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:57,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:57,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:57,736 INFO L87 Difference]: Start difference. First operand 3137 states and 4230 transitions. Second operand 7 states. [2020-10-26 23:59:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:02,834 INFO L93 Difference]: Finished difference Result 7356 states and 10352 transitions. [2020-10-26 23:59:02,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:59:02,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-26 23:59:02,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:02,859 INFO L225 Difference]: With dead ends: 7356 [2020-10-26 23:59:02,860 INFO L226 Difference]: Without dead ends: 4225 [2020-10-26 23:59:02,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:59:02,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2020-10-26 23:59:02,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 3827. [2020-10-26 23:59:02,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3827 states. [2020-10-26 23:59:02,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 5179 transitions. [2020-10-26 23:59:02,992 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 5179 transitions. Word has length 204 [2020-10-26 23:59:02,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:02,994 INFO L481 AbstractCegarLoop]: Abstraction has 3827 states and 5179 transitions. [2020-10-26 23:59:02,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:02,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 5179 transitions. [2020-10-26 23:59:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-26 23:59:03,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:03,004 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:03,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:59:03,004 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:03,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:03,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1978787661, now seen corresponding path program 1 times [2020-10-26 23:59:03,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:03,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564343924] [2020-10-26 23:59:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:03,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:03,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:03,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:03,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:05,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:07,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:07,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-26 23:59:07,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:59:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4786 [2020-10-26 23:59:07,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:59:07,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 23:59:07,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:07,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:07,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:07,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:08,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:08,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:59:08,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:08,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:08,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:08,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:08,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:08,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:08,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:08,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:08,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:59:08,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:08,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:59:08,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:08,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:59:08,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:59:08,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:59:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:08,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:08,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:08,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:08,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:59:08,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:59:08,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-26 23:59:08,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:08,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:08,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:08,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:59:08,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:08,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:59:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:08,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:08,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:08,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:08,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:08,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:59:08,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:08,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:08,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:08,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:08,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 191 proven. 114 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-26 23:59:08,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564343924] [2020-10-26 23:59:08,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:08,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:08,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244804886] [2020-10-26 23:59:08,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:08,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:08,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:08,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:08,906 INFO L87 Difference]: Start difference. First operand 3827 states and 5179 transitions. Second operand 7 states. [2020-10-26 23:59:12,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:12,680 INFO L93 Difference]: Finished difference Result 7794 states and 10637 transitions. [2020-10-26 23:59:12,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:59:12,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 382 [2020-10-26 23:59:12,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:12,711 INFO L225 Difference]: With dead ends: 7794 [2020-10-26 23:59:12,711 INFO L226 Difference]: Without dead ends: 3868 [2020-10-26 23:59:12,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:59:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2020-10-26 23:59:12,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3824. [2020-10-26 23:59:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3824 states. [2020-10-26 23:59:12,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 4819 transitions. [2020-10-26 23:59:12,829 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 4819 transitions. Word has length 382 [2020-10-26 23:59:12,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:12,829 INFO L481 AbstractCegarLoop]: Abstraction has 3824 states and 4819 transitions. [2020-10-26 23:59:12,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:12,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 4819 transitions. [2020-10-26 23:59:12,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-26 23:59:12,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:12,838 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:12,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:59:12,839 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:12,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:12,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1341352751, now seen corresponding path program 1 times [2020-10-26 23:59:12,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:12,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082715854] [2020-10-26 23:59:12,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:12,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:13,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:16,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:17,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:17,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-26 23:59:17,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:17,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-26 23:59:17,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:17,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:59:17,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:59:17,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:59:17,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:18,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:18,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:18,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:18,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:18,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:18,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:59:18,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:59:18,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:18,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:18,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:18,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:18,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:59:18,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:18,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 23:59:18,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:18,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:18,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:18,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:59:18,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:18,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:59:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:18,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:18,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:18,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:18,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:59:18,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:18,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:18,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:59:18,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:18,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:18,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-26 23:59:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:18,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:18,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:18,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:18,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:18,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:59:18,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:18,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:18,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:18,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:18,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 99 proven. 190 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-26 23:59:18,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082715854] [2020-10-26 23:59:18,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:18,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:18,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281992702] [2020-10-26 23:59:18,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:18,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:18,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:18,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:18,747 INFO L87 Difference]: Start difference. First operand 3824 states and 4819 transitions. Second operand 7 states. [2020-10-26 23:59:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:23,219 INFO L93 Difference]: Finished difference Result 8511 states and 11431 transitions. [2020-10-26 23:59:23,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:59:23,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 385 [2020-10-26 23:59:23,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:23,252 INFO L225 Difference]: With dead ends: 8511 [2020-10-26 23:59:23,253 INFO L226 Difference]: Without dead ends: 4693 [2020-10-26 23:59:23,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:59:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2020-10-26 23:59:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 4518. [2020-10-26 23:59:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4518 states. [2020-10-26 23:59:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 5559 transitions. [2020-10-26 23:59:23,460 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 5559 transitions. Word has length 385 [2020-10-26 23:59:23,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:23,461 INFO L481 AbstractCegarLoop]: Abstraction has 4518 states and 5559 transitions. [2020-10-26 23:59:23,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:23,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 5559 transitions. [2020-10-26 23:59:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-26 23:59:23,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:23,504 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:23,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:59:23,504 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:23,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:23,505 INFO L82 PathProgramCache]: Analyzing trace with hash 2003122369, now seen corresponding path program 1 times [2020-10-26 23:59:23,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:23,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682969366] [2020-10-26 23:59:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:23,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:23,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:28,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:28,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 540 [2020-10-26 23:59:28,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:59:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-26 23:59:28,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:59:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:59:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:28,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:28,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:28,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:28,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:28,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:28,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:59:28,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:28,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:28,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:28,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:59:28,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:29,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:29,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:29,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:29,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-26 23:59:29,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:59:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:29,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:29,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:29,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:29,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:29,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:59:29,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:59:29,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:29,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:59:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:29,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:29,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:29,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:29,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:29,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:59:29,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:29,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:29,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:29,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:29,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 229 proven. 114 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 23:59:30,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682969366] [2020-10-26 23:59:30,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:30,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:59:30,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5344451] [2020-10-26 23:59:30,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:59:30,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:30,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:59:30,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:59:30,045 INFO L87 Difference]: Start difference. First operand 4518 states and 5559 transitions. Second operand 8 states. [2020-10-26 23:59:37,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:37,530 INFO L93 Difference]: Finished difference Result 12142 states and 15540 transitions. [2020-10-26 23:59:37,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:59:37,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 524 [2020-10-26 23:59:37,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:37,567 INFO L225 Difference]: With dead ends: 12142 [2020-10-26 23:59:37,567 INFO L226 Difference]: Without dead ends: 8306 [2020-10-26 23:59:37,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:59:37,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8306 states. [2020-10-26 23:59:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8306 to 7628. [2020-10-26 23:59:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7628 states. [2020-10-26 23:59:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7628 states to 7628 states and 9097 transitions. [2020-10-26 23:59:37,763 INFO L78 Accepts]: Start accepts. Automaton has 7628 states and 9097 transitions. Word has length 524 [2020-10-26 23:59:37,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:37,764 INFO L481 AbstractCegarLoop]: Abstraction has 7628 states and 9097 transitions. [2020-10-26 23:59:37,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:59:37,764 INFO L276 IsEmpty]: Start isEmpty. Operand 7628 states and 9097 transitions. [2020-10-26 23:59:37,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2020-10-26 23:59:37,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:37,789 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:37,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:59:37,790 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1661676257, now seen corresponding path program 1 times [2020-10-26 23:59:37,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:37,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605503675] [2020-10-26 23:59:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:38,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:38,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:38,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:42,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:42,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:42,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 668 [2020-10-26 23:59:42,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:42,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-26 23:59:42,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:59:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:59:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:59:42,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:43,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:43,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:43,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:43,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:43,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:43,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:59:43,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:59:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:43,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:43,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:43,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:43,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:43,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:59:43,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:59:43,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-26 23:59:43,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:59:43,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:43,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:59:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:43,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:44,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:44,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:59:44,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:44,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-26 23:59:44,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:59:44,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:44,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-26 23:59:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:44,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:44,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:44,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:44,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:44,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:59:44,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:44,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 104 proven. 222 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-26 23:59:45,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605503675] [2020-10-26 23:59:45,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:45,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:45,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302231446] [2020-10-26 23:59:45,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:45,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:45,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:45,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:45,675 INFO L87 Difference]: Start difference. First operand 7628 states and 9097 transitions. Second operand 7 states. [2020-10-26 23:59:49,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:49,555 INFO L93 Difference]: Finished difference Result 14591 states and 17536 transitions. [2020-10-26 23:59:49,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:59:49,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 652 [2020-10-26 23:59:49,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:49,588 INFO L225 Difference]: With dead ends: 14591 [2020-10-26 23:59:49,588 INFO L226 Difference]: Without dead ends: 7647 [2020-10-26 23:59:49,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:59:49,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7647 states. [2020-10-26 23:59:49,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7647 to 7634. [2020-10-26 23:59:49,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7634 states. [2020-10-26 23:59:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7634 states to 7634 states and 9100 transitions. [2020-10-26 23:59:49,764 INFO L78 Accepts]: Start accepts. Automaton has 7634 states and 9100 transitions. Word has length 652 [2020-10-26 23:59:49,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:49,766 INFO L481 AbstractCegarLoop]: Abstraction has 7634 states and 9100 transitions. [2020-10-26 23:59:49,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:49,766 INFO L276 IsEmpty]: Start isEmpty. Operand 7634 states and 9100 transitions. [2020-10-26 23:59:49,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2020-10-26 23:59:49,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:49,778 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:59:49,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:59:49,779 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:49,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:49,780 INFO L82 PathProgramCache]: Analyzing trace with hash -789029858, now seen corresponding path program 1 times [2020-10-26 23:59:49,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:49,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264692212] [2020-10-26 23:59:49,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:49,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:50,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:50,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:52,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:52,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 684 [2020-10-26 23:59:52,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:59:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3055 [2020-10-26 23:59:52,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:59:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:59:52,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:53,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:53,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:53,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:53,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:53,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:59:53,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:53,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:53,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:53,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:53,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:53,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:59:53,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 23:59:53,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:53,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:53,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:53,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:53,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:53,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:59:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:53,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:53,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:53,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:59:53,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:53,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:59:53,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:53,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:53,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:53,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:59:53,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:53,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:59:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:53,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:53,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:53,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:59:53,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-26 23:59:53,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-26 23:59:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:53,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2020-10-26 23:59:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:53,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:53,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:53,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:53,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:53,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:59:53,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:53,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:53,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:53,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 402 proven. 114 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-26 23:59:54,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264692212] [2020-10-26 23:59:54,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:54,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:54,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633662034] [2020-10-26 23:59:54,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:54,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:54,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:54,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:54,148 INFO L87 Difference]: Start difference. First operand 7634 states and 9100 transitions. Second operand 7 states. [2020-10-26 23:59:58,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:58,949 INFO L93 Difference]: Finished difference Result 15627 states and 19058 transitions. [2020-10-26 23:59:58,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:59:58,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 666 [2020-10-26 23:59:58,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:58,980 INFO L225 Difference]: With dead ends: 15627 [2020-10-26 23:59:58,980 INFO L226 Difference]: Without dead ends: 8677 [2020-10-26 23:59:58,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:59:59,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8677 states. [2020-10-26 23:59:59,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8677 to 7987. [2020-10-26 23:59:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7987 states. [2020-10-26 23:59:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7987 states to 7987 states and 9463 transitions. [2020-10-26 23:59:59,162 INFO L78 Accepts]: Start accepts. Automaton has 7987 states and 9463 transitions. Word has length 666 [2020-10-26 23:59:59,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:59,163 INFO L481 AbstractCegarLoop]: Abstraction has 7987 states and 9463 transitions. [2020-10-26 23:59:59,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:59,163 INFO L276 IsEmpty]: Start isEmpty. Operand 7987 states and 9463 transitions. [2020-10-26 23:59:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2020-10-26 23:59:59,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:59,185 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:59,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:59:59,186 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:59,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:59,187 INFO L82 PathProgramCache]: Analyzing trace with hash 861944677, now seen corresponding path program 1 times [2020-10-26 23:59:59,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:59,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853906816] [2020-10-26 23:59:59,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:00,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:00,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:01,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:04,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:04,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 893 [2020-10-27 00:00:04,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 00:00:04,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 00:00:04,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 00:00:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:00:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 493 [2020-10-27 00:00:04,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:04,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:04,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:04,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:04,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:04,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:04,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:00:04,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:00:04,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:04,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:04,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:05,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:05,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:00:05,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:05,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-27 00:00:05,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-27 00:00:05,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:05,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:00:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:05,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:05,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:05,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 00:00:05,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-27 00:00:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:00:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-27 00:00:05,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:05,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-27 00:00:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:05,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:05,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:05,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 00:00:05,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:00:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-27 00:00:05,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 00:00:05,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:00:06,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-10-27 00:00:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:06,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:06,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:06,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:00:06,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:06,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:00:06,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:06,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:06,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:00:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:06,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:06,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2020-10-27 00:00:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:06,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:06,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:06,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:00:06,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:06,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:00:06,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:06,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:06,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:00:06,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:06,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 183 proven. 1046 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2020-10-27 00:00:06,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853906816] [2020-10-27 00:00:06,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:06,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 00:00:06,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307571843] [2020-10-27 00:00:06,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 00:00:06,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:06,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 00:00:06,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:00:06,843 INFO L87 Difference]: Start difference. First operand 7987 states and 9463 transitions. Second operand 10 states. [2020-10-27 00:00:09,654 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-27 00:00:12,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:12,783 INFO L93 Difference]: Finished difference Result 15394 states and 18436 transitions. [2020-10-27 00:00:12,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 00:00:12,789 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 873 [2020-10-27 00:00:12,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:12,814 INFO L225 Difference]: With dead ends: 15394 [2020-10-27 00:00:12,814 INFO L226 Difference]: Without dead ends: 8032 [2020-10-27 00:00:12,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-27 00:00:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8032 states. [2020-10-27 00:00:12,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8032 to 7991. [2020-10-27 00:00:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7991 states. [2020-10-27 00:00:12,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7991 states to 7991 states and 9483 transitions. [2020-10-27 00:00:12,994 INFO L78 Accepts]: Start accepts. Automaton has 7991 states and 9483 transitions. Word has length 873 [2020-10-27 00:00:12,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:12,995 INFO L481 AbstractCegarLoop]: Abstraction has 7991 states and 9483 transitions. [2020-10-27 00:00:12,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 00:00:12,995 INFO L276 IsEmpty]: Start isEmpty. Operand 7991 states and 9483 transitions. [2020-10-27 00:00:13,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2020-10-27 00:00:13,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:13,016 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, 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, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:13,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:00:13,016 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:13,017 INFO L82 PathProgramCache]: Analyzing trace with hash 2036580588, now seen corresponding path program 1 times [2020-10-27 00:00:13,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:13,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141130482] [2020-10-27 00:00:13,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:13,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:13,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:14,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:14,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:17,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:18,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:18,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 943 [2020-10-27 00:00:18,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 00:00:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 00:00:18,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 484 [2020-10-27 00:00:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 00:00:18,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:18,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:18,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:18,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:18,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:18,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:18,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:00:18,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:18,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:18,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:18,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:18,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:18,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:00:18,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:18,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:00:18,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:18,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:18,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:18,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:18,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:18,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:00:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:18,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:18,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:00:18,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:18,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:00:18,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:18,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:18,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:18,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:18,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:18,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:00:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:18,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:18,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:18,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 00:00:18,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:18,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 00:00:18,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:18,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:18,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:18,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:00:18,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:18,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-10-27 00:00:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:18,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:18,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:19,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:19,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 00:00:19,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:00:19,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 00:00:19,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:19,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 00:00:19,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:19,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-27 00:00:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:19,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:19,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:00:19,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:19,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:00:19,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:00:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:19,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:19,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 746 [2020-10-27 00:00:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:19,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:19,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:00:19,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:00:19,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:00:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:20,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 599 proven. 253 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2020-10-27 00:00:20,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141130482] [2020-10-27 00:00:20,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:20,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:20,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492255149] [2020-10-27 00:00:20,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:20,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:20,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:20,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:20,439 INFO L87 Difference]: Start difference. First operand 7991 states and 9483 transitions. Second operand 7 states. [2020-10-27 00:00:26,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:26,360 INFO L93 Difference]: Finished difference Result 15451 states and 18512 transitions. [2020-10-27 00:00:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:00:26,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 921 [2020-10-27 00:00:26,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:26,387 INFO L225 Difference]: With dead ends: 15451 [2020-10-27 00:00:26,387 INFO L226 Difference]: Without dead ends: 8039 [2020-10-27 00:00:26,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:00:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8039 states. [2020-10-27 00:00:26,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8039 to 7977. [2020-10-27 00:00:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7977 states. [2020-10-27 00:00:26,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7977 states to 7977 states and 9340 transitions. [2020-10-27 00:00:26,565 INFO L78 Accepts]: Start accepts. Automaton has 7977 states and 9340 transitions. Word has length 921 [2020-10-27 00:00:26,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:26,566 INFO L481 AbstractCegarLoop]: Abstraction has 7977 states and 9340 transitions. [2020-10-27 00:00:26,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:26,566 INFO L276 IsEmpty]: Start isEmpty. Operand 7977 states and 9340 transitions. [2020-10-27 00:00:26,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2020-10-27 00:00:26,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:26,589 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:00:26,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:00:26,589 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:26,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:26,590 INFO L82 PathProgramCache]: Analyzing trace with hash -746731070, now seen corresponding path program 1 times [2020-10-27 00:00:26,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:26,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898417638] [2020-10-27 00:00:26,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:26,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:27,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:30,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:31,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:31,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 980 [2020-10-27 00:00:31,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:00:31,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 00:00:31,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:00:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:00:31,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:31,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:31,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:31,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:31,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:31,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:31,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:00:31,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:31,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:31,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:31,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:32,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:32,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:00:32,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:32,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:00:32,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:32,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:32,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:00:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:32,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:32,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:32,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:00:32,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 00:00:32,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:00:32,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:32,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:00:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:32,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:32,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:32,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:32,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 00:00:32,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:00:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:32,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:00:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:32,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:32,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:00:32,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:32,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:00:32,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:32,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:00:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:32,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:32,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-27 00:00:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:32,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:32,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:32,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:00:32,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:32,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:00:32,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:32,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:32,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:00:32,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:32,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:32,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 783 [2020-10-27 00:00:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:32,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:32,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:32,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:00:32,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:32,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:00:32,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:32,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:32,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:00:32,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:32,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1897 backedges. 479 proven. 306 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2020-10-27 00:00:33,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898417638] [2020-10-27 00:00:33,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:33,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:33,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346011669] [2020-10-27 00:00:33,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:33,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:33,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:33,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:33,522 INFO L87 Difference]: Start difference. First operand 7977 states and 9340 transitions. Second operand 7 states. [2020-10-27 00:00:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:38,190 INFO L93 Difference]: Finished difference Result 15628 states and 18430 transitions. [2020-10-27 00:00:38,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:00:38,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 958 [2020-10-27 00:00:38,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:38,215 INFO L225 Difference]: With dead ends: 15628 [2020-10-27 00:00:38,215 INFO L226 Difference]: Without dead ends: 8335 [2020-10-27 00:00:38,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:00:38,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8335 states. [2020-10-27 00:00:38,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8335 to 8329. [2020-10-27 00:00:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8329 states. [2020-10-27 00:00:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8329 states to 8329 states and 9734 transitions. [2020-10-27 00:00:38,374 INFO L78 Accepts]: Start accepts. Automaton has 8329 states and 9734 transitions. Word has length 958 [2020-10-27 00:00:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:38,376 INFO L481 AbstractCegarLoop]: Abstraction has 8329 states and 9734 transitions. [2020-10-27 00:00:38,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:38,376 INFO L276 IsEmpty]: Start isEmpty. Operand 8329 states and 9734 transitions. [2020-10-27 00:00:38,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2020-10-27 00:00:38,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:38,400 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:00:38,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:00:38,400 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:38,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:38,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1664421630, now seen corresponding path program 1 times [2020-10-27 00:00:38,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:38,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825407932] [2020-10-27 00:00:38,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:38,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:38,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:42,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:43,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:43,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:43,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 982 [2020-10-27 00:00:43,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:00:43,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 00:00:43,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 00:00:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:00:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:43,870 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:00:43,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:43,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:43,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:43,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:43,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:43,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 00:00:43,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:43,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:43,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:43,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:00:43,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:43,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:00:43,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:43,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:44,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:00:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:44,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:44,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:44,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:00:44,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:44,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:00:44,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:00:44,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:44,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:00:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:44,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:44,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:44,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:44,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:44,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 00:00:44,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:44,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:44,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:44,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:00:44,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:44,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:00:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:44,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:44,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:44,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:00:44,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:44,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:00:44,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:00:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:44,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:44,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-10-27 00:00:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:44,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:44,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:44,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:00:44,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:44,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:00:44,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:00:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:44,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:44,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 785 [2020-10-27 00:00:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:44,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:44,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:44,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:00:44,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:00:44,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:00:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1899 backedges. 479 proven. 306 refuted. 0 times theorem prover too weak. 1114 trivial. 0 not checked. [2020-10-27 00:00:45,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825407932] [2020-10-27 00:00:45,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:45,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:45,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725175687] [2020-10-27 00:00:45,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:45,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:45,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:45,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:45,226 INFO L87 Difference]: Start difference. First operand 8329 states and 9734 transitions. Second operand 7 states. [2020-10-27 00:00:50,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:50,809 INFO L93 Difference]: Finished difference Result 19048 states and 22913 transitions. [2020-10-27 00:00:50,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:00:50,810 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 960 [2020-10-27 00:00:50,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:50,841 INFO L225 Difference]: With dead ends: 19048 [2020-10-27 00:00:50,842 INFO L226 Difference]: Without dead ends: 11403 [2020-10-27 00:00:50,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:00:50,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11403 states. [2020-10-27 00:00:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11403 to 11399. [2020-10-27 00:00:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11399 states. [2020-10-27 00:00:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11399 states to 11399 states and 13481 transitions. [2020-10-27 00:00:51,065 INFO L78 Accepts]: Start accepts. Automaton has 11399 states and 13481 transitions. Word has length 960 [2020-10-27 00:00:51,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:51,066 INFO L481 AbstractCegarLoop]: Abstraction has 11399 states and 13481 transitions. [2020-10-27 00:00:51,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:51,067 INFO L276 IsEmpty]: Start isEmpty. Operand 11399 states and 13481 transitions. [2020-10-27 00:00:51,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2020-10-27 00:00:51,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:51,097 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, 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, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:00:51,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:00:51,097 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:51,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:51,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1870274370, now seen corresponding path program 1 times [2020-10-27 00:00:51,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:51,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104773072] [2020-10-27 00:00:51,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:51,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:51,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:53,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:53,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:56,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:56,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1016 [2020-10-27 00:00:56,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:00:56,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-27 00:00:56,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-27 00:00:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:00:56,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:56,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:56,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:56,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:56,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:56,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:56,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:00:56,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:56,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:56,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:56,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:56,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:56,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:00:56,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:56,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:00:56,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:56,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:56,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:00:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:56,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:56,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:56,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:00:56,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:56,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:00:56,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:56,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:56,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:00:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:56,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:56,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:56,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:00:56,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:56,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 00:00:56,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-27 00:00:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:56,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-27 00:00:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:56,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:57,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:57,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:00:57,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:57,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:00:57,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:57,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:57,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:57,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:00:57,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:57,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2020-10-27 00:00:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:57,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:57,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:57,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:00:57,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:57,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:00:57,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:57,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:57,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:00:57,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:57,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:57,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 819 [2020-10-27 00:00:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:57,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:57,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:00:57,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:00:57,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:00:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 430 proven. 134 refuted. 0 times theorem prover too weak. 1416 trivial. 0 not checked. [2020-10-27 00:00:57,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104773072] [2020-10-27 00:00:57,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:57,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:57,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923357603] [2020-10-27 00:00:57,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:57,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:57,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:57,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:57,777 INFO L87 Difference]: Start difference. First operand 11399 states and 13481 transitions. Second operand 7 states. [2020-10-27 00:01:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:02,728 INFO L93 Difference]: Finished difference Result 22483 states and 26682 transitions. [2020-10-27 00:01:02,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:01:02,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 994 [2020-10-27 00:01:02,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:02,755 INFO L225 Difference]: With dead ends: 22483 [2020-10-27 00:01:02,755 INFO L226 Difference]: Without dead ends: 11427 [2020-10-27 00:01:02,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 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 00:01:02,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11427 states. [2020-10-27 00:01:02,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11427 to 11069. [2020-10-27 00:01:02,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11069 states. [2020-10-27 00:01:02,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 12853 transitions. [2020-10-27 00:01:02,969 INFO L78 Accepts]: Start accepts. Automaton has 11069 states and 12853 transitions. Word has length 994 [2020-10-27 00:01:02,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:02,970 INFO L481 AbstractCegarLoop]: Abstraction has 11069 states and 12853 transitions. [2020-10-27 00:01:02,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:02,970 INFO L276 IsEmpty]: Start isEmpty. Operand 11069 states and 12853 transitions. [2020-10-27 00:01:03,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2020-10-27 00:01:03,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:03,007 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:03,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:01:03,007 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:03,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:03,008 INFO L82 PathProgramCache]: Analyzing trace with hash 788741861, now seen corresponding path program 1 times [2020-10-27 00:01:03,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:03,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46769765] [2020-10-27 00:01:03,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:03,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:03,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:03,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:03,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:08,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:08,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1019 [2020-10-27 00:01:08,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:01:08,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 00:01:08,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 00:01:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-27 00:01:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 338 [2020-10-27 00:01:08,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:08,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:08,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:08,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:08,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:08,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:08,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 00:01:08,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:08,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:08,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:08,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:08,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:08,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:08,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:08,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:08,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:01:08,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:08,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 00:01:08,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:08,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:08,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:08,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-27 00:01:08,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:08,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:01:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:08,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:09,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:09,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-27 00:01:09,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:09,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 716 [2020-10-27 00:01:09,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:01:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-27 00:01:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:09,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2020-10-27 00:01:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:09,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:09,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:10,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:10,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 00:01:10,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:01:10,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-27 00:01:10,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 00:01:10,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:10,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2020-10-27 00:01:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:10,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:10,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:10,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:01:10,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:10,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:01:10,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:01:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:10,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:10,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-10-27 00:01:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:10,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:10,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:01:10,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:10,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 00:01:10,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:01:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:10,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:11,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 575 proven. 712 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2020-10-27 00:01:11,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46769765] [2020-10-27 00:01:11,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:11,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 00:01:11,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484508318] [2020-10-27 00:01:11,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 00:01:11,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:11,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 00:01:11,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:01:11,248 INFO L87 Difference]: Start difference. First operand 11069 states and 12853 transitions. Second operand 10 states. [2020-10-27 00:01:15,611 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2020-10-27 00:01:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:18,725 INFO L93 Difference]: Finished difference Result 21571 states and 25270 transitions. [2020-10-27 00:01:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 00:01:18,727 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 999 [2020-10-27 00:01:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:18,752 INFO L225 Difference]: With dead ends: 21571 [2020-10-27 00:01:18,752 INFO L226 Difference]: Without dead ends: 11125 [2020-10-27 00:01:18,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-27 00:01:18,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11125 states. [2020-10-27 00:01:18,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11125 to 11079. [2020-10-27 00:01:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11079 states. [2020-10-27 00:01:18,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11079 states to 11079 states and 12889 transitions. [2020-10-27 00:01:18,986 INFO L78 Accepts]: Start accepts. Automaton has 11079 states and 12889 transitions. Word has length 999 [2020-10-27 00:01:18,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:18,987 INFO L481 AbstractCegarLoop]: Abstraction has 11079 states and 12889 transitions. [2020-10-27 00:01:18,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 00:01:18,987 INFO L276 IsEmpty]: Start isEmpty. Operand 11079 states and 12889 transitions. [2020-10-27 00:01:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2020-10-27 00:01:19,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:19,012 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:19,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:01:19,012 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:19,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:19,013 INFO L82 PathProgramCache]: Analyzing trace with hash -505548557, now seen corresponding path program 1 times [2020-10-27 00:01:19,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:19,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063243963] [2020-10-27 00:01:19,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:19,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:19,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:20,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:21,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:21,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:24,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:24,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1029 [2020-10-27 00:01:24,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:01:24,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 00:01:24,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 654 [2020-10-27 00:01:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:01:24,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:24,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:24,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:24,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:24,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:24,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:01:24,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:24,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:24,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:24,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:24,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:24,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:01:24,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:24,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:01:24,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:24,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:24,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:24,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:24,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:24,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:01:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:24,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:24,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:24,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:01:24,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:01:24,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:01:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:24,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:24,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:01:24,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:24,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:01:24,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:24,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:24,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:24,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:24,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:24,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:01:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:24,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:24,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:24,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:01:24,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:24,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:01:24,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:24,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:24,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 00:01:24,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:24,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:01:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:24,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:24,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:24,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:01:24,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:24,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:01:24,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:24,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:01:24,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:24,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2020-10-27 00:01:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:24,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:25,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:25,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:01:25,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:25,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:01:25,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:01:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:25,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:25,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 830 [2020-10-27 00:01:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:25,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:25,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:25,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:01:25,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:25,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:01:25,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:01:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:25,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2438 backedges. 542 proven. 134 refuted. 0 times theorem prover too weak. 1762 trivial. 0 not checked. [2020-10-27 00:01:25,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063243963] [2020-10-27 00:01:25,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:25,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:25,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598923852] [2020-10-27 00:01:25,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:25,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:25,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:25,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:25,763 INFO L87 Difference]: Start difference. First operand 11079 states and 12889 transitions. Second operand 7 states. [2020-10-27 00:01:30,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:30,718 INFO L93 Difference]: Finished difference Result 22847 states and 26575 transitions. [2020-10-27 00:01:30,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:01:30,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1005 [2020-10-27 00:01:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:30,745 INFO L225 Difference]: With dead ends: 22847 [2020-10-27 00:01:30,745 INFO L226 Difference]: Without dead ends: 12452 [2020-10-27 00:01:30,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:01:30,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12452 states. [2020-10-27 00:01:30,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12452 to 12096. [2020-10-27 00:01:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12096 states. [2020-10-27 00:01:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12096 states to 12096 states and 14000 transitions. [2020-10-27 00:01:30,998 INFO L78 Accepts]: Start accepts. Automaton has 12096 states and 14000 transitions. Word has length 1005 [2020-10-27 00:01:30,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:30,999 INFO L481 AbstractCegarLoop]: Abstraction has 12096 states and 14000 transitions. [2020-10-27 00:01:30,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:30,999 INFO L276 IsEmpty]: Start isEmpty. Operand 12096 states and 14000 transitions. [2020-10-27 00:01:31,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2020-10-27 00:01:31,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:31,027 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:31,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 00:01:31,027 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:31,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:31,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1113192543, now seen corresponding path program 1 times [2020-10-27 00:01:31,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:31,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087444518] [2020-10-27 00:01:31,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:31,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:31,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:33,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:34,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:36,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:36,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-27 00:01:36,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:01:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 00:01:36,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-27 00:01:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:01:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:36,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:36,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:36,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:36,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:36,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:36,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 00:01:36,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:36,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:36,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:36,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:36,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:36,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:36,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:36,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:36,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:01:36,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:36,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:01:36,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:36,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:01:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:36,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:36,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:36,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:01:36,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:36,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:01:36,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:36,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:36,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:36,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:36,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:01:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:36,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:36,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:36,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:01:36,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:01:36,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:36,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:01:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:36,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:36,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:36,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:01:36,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:36,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:01:36,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:36,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:36,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:01:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:36,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:36,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:36,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:01:36,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:36,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:01:36,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:36,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:36,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:36,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:01:36,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:36,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-27 00:01:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:36,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:36,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:36,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:01:36,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:01:36,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:01:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:37,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-27 00:01:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:37,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:37,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:37,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:01:37,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:01:37,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:01:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:37,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2444 backedges. 771 proven. 114 refuted. 0 times theorem prover too weak. 1559 trivial. 0 not checked. [2020-10-27 00:01:37,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087444518] [2020-10-27 00:01:37,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:37,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:37,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220512446] [2020-10-27 00:01:37,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:37,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:37,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:37,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:37,671 INFO L87 Difference]: Start difference. First operand 12096 states and 14000 transitions. Second operand 7 states. [2020-10-27 00:01:45,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:45,034 INFO L93 Difference]: Finished difference Result 26590 states and 31462 transitions. [2020-10-27 00:01:45,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:01:45,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1006 [2020-10-27 00:01:45,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:45,068 INFO L225 Difference]: With dead ends: 26590 [2020-10-27 00:01:45,069 INFO L226 Difference]: Without dead ends: 15178 [2020-10-27 00:01:45,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:01:45,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15178 states. [2020-10-27 00:01:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15178 to 15173. [2020-10-27 00:01:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15173 states. [2020-10-27 00:01:45,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15173 states to 15173 states and 17766 transitions. [2020-10-27 00:01:45,342 INFO L78 Accepts]: Start accepts. Automaton has 15173 states and 17766 transitions. Word has length 1006 [2020-10-27 00:01:45,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:45,343 INFO L481 AbstractCegarLoop]: Abstraction has 15173 states and 17766 transitions. [2020-10-27 00:01:45,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:45,343 INFO L276 IsEmpty]: Start isEmpty. Operand 15173 states and 17766 transitions. [2020-10-27 00:01:45,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2020-10-27 00:01:45,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:45,364 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, 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, 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:45,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 00:01:45,364 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:45,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1916133744, now seen corresponding path program 1 times [2020-10-27 00:01:45,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:45,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591606203] [2020-10-27 00:01:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:45,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:46,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:47,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:50,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:50,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1032 [2020-10-27 00:01:50,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:01:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 00:01:50,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:50,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:01:50,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 00:01:50,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:50,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:50,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:50,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:50,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:50,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 00:01:50,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:50,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:50,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:50,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:50,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:50,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:01:50,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:01:50,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:50,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:01:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:50,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:50,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:50,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:01:50,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:50,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:01:50,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:01:50,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:50,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:01:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:50,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:51,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:51,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 00:01:51,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:51,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 00:01:51,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:51,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:51,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:51,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-27 00:01:51,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:51,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-27 00:01:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:51,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:51,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:51,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 00:01:51,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:01:51,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 00:01:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:51,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2020-10-27 00:01:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:51,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:51,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:51,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:01:51,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:51,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:01:51,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:01:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:51,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 835 [2020-10-27 00:01:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:51,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:51,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:51,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:01:51,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:51,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:01:51,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:01:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:51,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 504 proven. 432 refuted. 0 times theorem prover too weak. 1251 trivial. 0 not checked. [2020-10-27 00:01:52,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591606203] [2020-10-27 00:01:52,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:52,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:52,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609806872] [2020-10-27 00:01:52,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:52,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:52,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:52,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:52,019 INFO L87 Difference]: Start difference. First operand 15173 states and 17766 transitions. Second operand 7 states. [2020-10-27 00:01:53,849 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:01:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:57,358 INFO L93 Difference]: Finished difference Result 29769 states and 35614 transitions. [2020-10-27 00:01:57,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:01:57,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1010 [2020-10-27 00:01:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:57,402 INFO L225 Difference]: With dead ends: 29769 [2020-10-27 00:01:57,402 INFO L226 Difference]: Without dead ends: 15280 [2020-10-27 00:01:57,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:01:57,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15280 states. [2020-10-27 00:01:57,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15280 to 15170. [2020-10-27 00:01:57,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15170 states. [2020-10-27 00:01:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15170 states to 15170 states and 17254 transitions. [2020-10-27 00:01:57,711 INFO L78 Accepts]: Start accepts. Automaton has 15170 states and 17254 transitions. Word has length 1010 [2020-10-27 00:01:57,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:57,712 INFO L481 AbstractCegarLoop]: Abstraction has 15170 states and 17254 transitions. [2020-10-27 00:01:57,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:57,712 INFO L276 IsEmpty]: Start isEmpty. Operand 15170 states and 17254 transitions. [2020-10-27 00:01:57,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2020-10-27 00:01:57,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:57,733 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:57,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 00:01:57,734 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:57,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:57,735 INFO L82 PathProgramCache]: Analyzing trace with hash -267030982, now seen corresponding path program 1 times [2020-10-27 00:01:57,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:57,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837192947] [2020-10-27 00:01:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:58,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking...