/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:39:32,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:39:32,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:39:32,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:39:32,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:39:32,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:39:32,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:39:32,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:39:32,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:39:32,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:39:32,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:39:32,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:39:32,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:39:32,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:39:32,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:39:32,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:39:32,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:39:32,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:39:32,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:39:32,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:39:32,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:39:32,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:39:32,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:39:32,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:39:32,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:39:32,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:39:32,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:39:32,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:39:32,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:39:32,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:39:32,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:39:32,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:39:32,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:39:32,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:39:32,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:39:32,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:39:32,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:39:32,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:39:32,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:39:32,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:39:32,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:39:32,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 15:39:33,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:39:33,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:39:33,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:39:33,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:39:33,036 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:39:33,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:39:33,036 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:39:33,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:39:33,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:39:33,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:39:33,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:39:33,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:39:33,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:39:33,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:39:33,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:39:33,038 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:39:33,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:39:33,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:39:33,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:39:33,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:39:33,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:39:33,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:39:33,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:39:33,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:39:33,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:39:33,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:39:33,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:39:33,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:39:33,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:39:33,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:39:33,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:39:33,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:39:33,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:39:33,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:39:33,502 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:39:33,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label01.c [2020-10-27 15:39:33,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4463047d/8d41b4d16be24e1e9567d7db1c97fd95/FLAG34d10f108 [2020-10-27 15:39:34,424 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:39:34,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label01.c [2020-10-27 15:39:34,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4463047d/8d41b4d16be24e1e9567d7db1c97fd95/FLAG34d10f108 [2020-10-27 15:39:34,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4463047d/8d41b4d16be24e1e9567d7db1c97fd95 [2020-10-27 15:39:34,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:39:34,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:39:34,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:39:34,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:39:34,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:39:34,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:39:34" (1/1) ... [2020-10-27 15:39:34,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22140284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:34, skipping insertion in model container [2020-10-27 15:39:34,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:39:34" (1/1) ... [2020-10-27 15:39:34,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:39:34,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:39:35,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:39:35,484 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:39:35,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:39:35,718 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:39:35,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:35 WrapperNode [2020-10-27 15:39:35,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:39:35,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:39:35,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:39:35,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:39:35,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:35" (1/1) ... [2020-10-27 15:39:35,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:35" (1/1) ... [2020-10-27 15:39:35,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:35" (1/1) ... [2020-10-27 15:39:35,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:35" (1/1) ... [2020-10-27 15:39:35,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:35" (1/1) ... [2020-10-27 15:39:35,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:35" (1/1) ... [2020-10-27 15:39:35,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:35" (1/1) ... [2020-10-27 15:39:35,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:39:35,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:39:35,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:39:35,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:39:35,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:39:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:39:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:39:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:39:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:39:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:39:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:39:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:39:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:39:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:39:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:39:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:39:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:39:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:39:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:39:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:39:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:39:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:39:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:39:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:39:38,214 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:39:38,215 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:39:38,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:39:38 BoogieIcfgContainer [2020-10-27 15:39:38,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:39:38,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:39:38,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:39:38,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:39:38,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:39:34" (1/3) ... [2020-10-27 15:39:38,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233deb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:39:38, skipping insertion in model container [2020-10-27 15:39:38,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:39:35" (2/3) ... [2020-10-27 15:39:38,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233deb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:39:38, skipping insertion in model container [2020-10-27 15:39:38,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:39:38" (3/3) ... [2020-10-27 15:39:38,226 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label01.c [2020-10-27 15:39:38,238 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:39:38,244 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:39:38,257 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:39:38,287 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:39:38,288 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:39:38,288 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:39:38,288 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:39:38,288 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:39:38,288 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:39:38,288 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:39:38,289 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:39:38,313 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-27 15:39:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-27 15:39:38,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:39:38,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:38,332 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:39:38,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:39:38,339 INFO L82 PathProgramCache]: Analyzing trace with hash -2064747604, now seen corresponding path program 1 times [2020-10-27 15:39:38,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:39:38,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411318153] [2020-10-27 15:39:38,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:39:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:39:38,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:39,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:43,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:39:43,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-27 15:39:43,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:39:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4481 [2020-10-27 15:39:43,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:39:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 15:39:43,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:39:43,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 15:39:43,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:39:44,461 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-27 15:39:44,734 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-27 15:39:44,971 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2020-10-27 15:39:45,350 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-10-27 15:39:45,573 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-10-27 15:39:45,777 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-27 15:39:45,942 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2020-10-27 15:39:46,256 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:39:46,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:39:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:39:46,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:46,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:39:46,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:39:46,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:39:46,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 15:39:46,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:39:46,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:39:46,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:39:46,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:39:46,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:39:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:39:46,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411318153] [2020-10-27 15:39:46,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:39:46,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 15:39:46,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844430868] [2020-10-27 15:39:46,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 15:39:46,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:39:47,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 15:39:47,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:39:47,018 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 12 states. [2020-10-27 15:39:47,630 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 15:39:48,673 WARN L193 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-10-27 15:39:49,691 WARN L193 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-10-27 15:39:50,752 WARN L193 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 216 [2020-10-27 15:39:52,552 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 232 DAG size of output: 213 [2020-10-27 15:39:54,533 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 232 DAG size of output: 210 [2020-10-27 15:39:56,674 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 235 DAG size of output: 207 [2020-10-27 15:40:00,783 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 236 DAG size of output: 204 [2020-10-27 15:40:02,627 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 238 DAG size of output: 200 [2020-10-27 15:40:05,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:40:05,908 INFO L93 Difference]: Finished difference Result 742 states and 1293 transitions. [2020-10-27 15:40:05,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 15:40:05,911 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 193 [2020-10-27 15:40:05,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:40:05,945 INFO L225 Difference]: With dead ends: 742 [2020-10-27 15:40:05,946 INFO L226 Difference]: Without dead ends: 365 [2020-10-27 15:40:05,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-27 15:40:05,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-27 15:40:06,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2020-10-27 15:40:06,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-27 15:40:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 526 transitions. [2020-10-27 15:40:06,088 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 526 transitions. Word has length 193 [2020-10-27 15:40:06,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:40:06,092 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 526 transitions. [2020-10-27 15:40:06,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 15:40:06,092 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 526 transitions. [2020-10-27 15:40:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 15:40:06,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:40:06,109 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:40:06,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:40:06,110 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:40:06,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:40:06,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1235051937, now seen corresponding path program 1 times [2020-10-27 15:40:06,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:40:06,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790934716] [2020-10-27 15:40:06,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:40:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:06,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:08,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:11,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:11,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 15:40:11,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:40:11,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 15:40:11,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:40:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 15:40:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-27 15:40:11,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:11,704 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:40:11,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:40:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:11,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:11,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:11,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:40:11,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:11,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:40:11,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:11,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:40:11,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:11,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:40:11,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:11,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:40:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:11,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:11,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:11,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:40:11,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:11,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 15:40:11,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:11,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:40:11,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:11,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:40:11,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:11,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:40:11,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790934716] [2020-10-27 15:40:11,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:40:11,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:40:11,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220360797] [2020-10-27 15:40:11,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:40:11,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:40:11,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:40:11,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:40:11,971 INFO L87 Difference]: Start difference. First operand 365 states and 526 transitions. Second operand 5 states. [2020-10-27 15:40:12,239 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:40:15,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:40:15,236 INFO L93 Difference]: Finished difference Result 826 states and 1286 transitions. [2020-10-27 15:40:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:40:15,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-27 15:40:15,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:40:15,244 INFO L225 Difference]: With dead ends: 826 [2020-10-27 15:40:15,244 INFO L226 Difference]: Without dead ends: 582 [2020-10-27 15:40:15,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:40:15,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-27 15:40:15,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 580. [2020-10-27 15:40:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-10-27 15:40:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 867 transitions. [2020-10-27 15:40:15,288 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 867 transitions. Word has length 204 [2020-10-27 15:40:15,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:40:15,289 INFO L481 AbstractCegarLoop]: Abstraction has 580 states and 867 transitions. [2020-10-27 15:40:15,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:40:15,289 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 867 transitions. [2020-10-27 15:40:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-27 15:40:15,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:40:15,294 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:40:15,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:40:15,294 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:40:15,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:40:15,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1480342968, now seen corresponding path program 1 times [2020-10-27 15:40:15,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:40:15,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023162403] [2020-10-27 15:40:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:40:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:15,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:15,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:16,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:17,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:19,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:19,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-27 15:40:19,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:40:19,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3681 [2020-10-27 15:40:19,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:40:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 15:40:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 15:40:19,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:19,322 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:40:19,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:40:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:19,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:19,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:40:19,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:19,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:40:19,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:40:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:40:19,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:40:19,478 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:40:19,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:40:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:19,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:19,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:19,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:40:19,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:19,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 15:40:19,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:19,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:40:19,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:19,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:40:19,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:40:19,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:40:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:19,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:19,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:19,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:40:19,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:19,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 15:40:19,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:19,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:40:19,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:40:19,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 15:40:19,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:40:19,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023162403] [2020-10-27 15:40:19,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:40:19,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:40:19,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938693616] [2020-10-27 15:40:19,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:40:19,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:40:19,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:40:19,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:40:19,745 INFO L87 Difference]: Start difference. First operand 580 states and 867 transitions. Second operand 7 states. [2020-10-27 15:40:20,008 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:40:23,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:40:23,906 INFO L93 Difference]: Finished difference Result 1503 states and 2378 transitions. [2020-10-27 15:40:23,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 15:40:23,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-27 15:40:23,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:40:23,920 INFO L225 Difference]: With dead ends: 1503 [2020-10-27 15:40:23,921 INFO L226 Difference]: Without dead ends: 1044 [2020-10-27 15:40:23,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:40:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-10-27 15:40:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1028. [2020-10-27 15:40:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1028 states. [2020-10-27 15:40:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1599 transitions. [2020-10-27 15:40:23,982 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1599 transitions. Word has length 213 [2020-10-27 15:40:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:40:23,982 INFO L481 AbstractCegarLoop]: Abstraction has 1028 states and 1599 transitions. [2020-10-27 15:40:23,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:40:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1599 transitions. [2020-10-27 15:40:23,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 15:40:23,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:40:23,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:40:23,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:40:23,988 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:40:23,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:40:23,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1822576589, now seen corresponding path program 1 times [2020-10-27 15:40:23,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:40:23,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216878132] [2020-10-27 15:40:23,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:40:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:24,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:24,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:25,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:25,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:25,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 15:40:25,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:40:25,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1483 [2020-10-27 15:40:25,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:25,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:40:25,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 15:40:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 15:40:25,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 15:40:26,370 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:40:26,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:40:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:26,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:26,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:26,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:40:26,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:26,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 15:40:26,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:40:26,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:26,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:40:26,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:26,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:40:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:26,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:26,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:26,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:40:26,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:26,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 15:40:26,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:26,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:40:26,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:26,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 15:40:26,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:40:27,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216878132] [2020-10-27 15:40:27,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:40:27,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:40:27,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867831274] [2020-10-27 15:40:27,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:40:27,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:40:27,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:40:27,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:40:27,018 INFO L87 Difference]: Start difference. First operand 1028 states and 1599 transitions. Second operand 5 states. [2020-10-27 15:40:27,583 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 15:40:30,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:40:30,753 INFO L93 Difference]: Finished difference Result 2291 states and 3721 transitions. [2020-10-27 15:40:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:40:30,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-27 15:40:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:40:30,761 INFO L225 Difference]: With dead ends: 2291 [2020-10-27 15:40:30,761 INFO L226 Difference]: Without dead ends: 1016 [2020-10-27 15:40:30,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:40:30,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2020-10-27 15:40:30,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1016. [2020-10-27 15:40:30,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-10-27 15:40:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1485 transitions. [2020-10-27 15:40:30,806 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1485 transitions. Word has length 214 [2020-10-27 15:40:30,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:40:30,806 INFO L481 AbstractCegarLoop]: Abstraction has 1016 states and 1485 transitions. [2020-10-27 15:40:30,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:40:30,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1485 transitions. [2020-10-27 15:40:30,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-27 15:40:30,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:40:30,812 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:40:30,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:40:30,812 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:40:30,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:40:30,813 INFO L82 PathProgramCache]: Analyzing trace with hash -436446896, now seen corresponding path program 1 times [2020-10-27 15:40:30,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:40:30,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124205740] [2020-10-27 15:40:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:40:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:30,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:31,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:32,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:33,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:35,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:35,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-27 15:40:35,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:40:35,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-27 15:40:35,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:40:35,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 15:40:35,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-27 15:40:35,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:36,279 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:40:36,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:40:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:36,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:36,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:36,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:40:36,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:36,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:40:36,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:36,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:40:36,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:36,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:40:36,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:36,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:40:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:36,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:36,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:36,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:40:36,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:40:36,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:40:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:40:36,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:36,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:40:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:36,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:36,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:36,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:40:36,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:36,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 15:40:36,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:36,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:40:36,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:36,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 15:40:36,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:40:36,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124205740] [2020-10-27 15:40:36,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:40:36,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:40:36,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924759613] [2020-10-27 15:40:36,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:40:36,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:40:36,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:40:36,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:40:36,577 INFO L87 Difference]: Start difference. First operand 1016 states and 1485 transitions. Second operand 5 states. [2020-10-27 15:40:36,828 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:40:40,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:40:40,151 INFO L93 Difference]: Finished difference Result 2794 states and 4240 transitions. [2020-10-27 15:40:40,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:40:40,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-27 15:40:40,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:40:40,164 INFO L225 Difference]: With dead ends: 2794 [2020-10-27 15:40:40,164 INFO L226 Difference]: Without dead ends: 1887 [2020-10-27 15:40:40,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:40:40,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2020-10-27 15:40:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1865. [2020-10-27 15:40:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2020-10-27 15:40:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2784 transitions. [2020-10-27 15:40:40,242 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2784 transitions. Word has length 217 [2020-10-27 15:40:40,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:40:40,243 INFO L481 AbstractCegarLoop]: Abstraction has 1865 states and 2784 transitions. [2020-10-27 15:40:40,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:40:40,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2784 transitions. [2020-10-27 15:40:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-27 15:40:40,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:40:40,251 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:40:40,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:40:40,252 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:40:40,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:40:40,252 INFO L82 PathProgramCache]: Analyzing trace with hash 2133305695, now seen corresponding path program 1 times [2020-10-27 15:40:40,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:40:40,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187264986] [2020-10-27 15:40:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:40:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:40,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:40,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:40,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:44,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:44,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:44,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:45,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:45,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-27 15:40:45,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:40:45,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 15:40:45,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:45,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:40:45,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 15:40:45,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-27 15:40:45,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:45,726 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:40:45,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:40:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:45,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:45,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:45,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:40:45,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:45,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:40:45,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:40:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:40:45,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:45,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:40:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:45,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:45,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:45,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:40:45,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:45,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:40:45,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:45,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:40:45,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:45,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:40:45,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:45,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:40:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:45,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:45,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:45,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 15:40:45,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:45,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 15:40:45,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:40:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:40:45,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:45,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 15:40:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:45,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:45,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:45,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:45,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:40:45,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:40:45,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 15:40:45,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:40:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:40:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 15:40:45,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 35 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 15:40:46,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187264986] [2020-10-27 15:40:46,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:40:46,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:40:46,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245647188] [2020-10-27 15:40:46,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:40:46,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:40:46,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:40:46,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:40:46,110 INFO L87 Difference]: Start difference. First operand 1865 states and 2784 transitions. Second operand 8 states. [2020-10-27 15:40:46,368 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:40:46,925 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:40:47,683 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-27 15:40:48,543 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 164 [2020-10-27 15:40:52,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:40:52,411 INFO L93 Difference]: Finished difference Result 7104 states and 11497 transitions. [2020-10-27 15:40:52,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 15:40:52,412 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 229 [2020-10-27 15:40:52,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:40:52,449 INFO L225 Difference]: With dead ends: 7104 [2020-10-27 15:40:52,449 INFO L226 Difference]: Without dead ends: 5348 [2020-10-27 15:40:52,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:40:52,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2020-10-27 15:40:52,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 5294. [2020-10-27 15:40:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5294 states. [2020-10-27 15:40:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 7852 transitions. [2020-10-27 15:40:52,679 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 7852 transitions. Word has length 229 [2020-10-27 15:40:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:40:52,680 INFO L481 AbstractCegarLoop]: Abstraction has 5294 states and 7852 transitions. [2020-10-27 15:40:52,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:40:52,680 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 7852 transitions. [2020-10-27 15:40:52,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-27 15:40:52,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:40:52,698 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:52,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:40:52,698 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:40:52,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:40:52,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1378527716, now seen corresponding path program 1 times [2020-10-27 15:40:52,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:40:52,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137022762] [2020-10-27 15:40:52,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:40:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:52,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:53,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:54,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:55,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:55,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-27 15:40:55,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:40:55,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2706 [2020-10-27 15:40:55,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:55,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 15:40:55,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:40:55,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 15:40:55,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:55,863 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:40:55,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:40:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:55,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:55,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:55,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:40:55,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:55,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 15:40:55,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:40:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:40:55,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:55,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:40:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:56,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:56,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:56,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:40:56,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:56,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 15:40:56,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:56,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:40:56,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:40:56,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 15:40:56,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:56,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:40:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:56,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:56,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:56,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 15:40:56,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:56,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 15:40:56,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:56,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:40:56,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:40:56,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 15:40:56,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 15:40:56,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137022762] [2020-10-27 15:40:56,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:40:56,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:40:56,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025162701] [2020-10-27 15:40:56,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:40:56,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:40:56,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:40:56,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:40:56,509 INFO L87 Difference]: Start difference. First operand 5294 states and 7852 transitions. Second operand 9 states. [2020-10-27 15:40:56,791 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:40:57,579 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 15:41:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:02,747 INFO L93 Difference]: Finished difference Result 15886 states and 25058 transitions. [2020-10-27 15:41:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:41:02,747 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 239 [2020-10-27 15:41:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:02,819 INFO L225 Difference]: With dead ends: 15886 [2020-10-27 15:41:02,819 INFO L226 Difference]: Without dead ends: 10155 [2020-10-27 15:41:02,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-27 15:41:02,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10155 states. [2020-10-27 15:41:03,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10155 to 10050. [2020-10-27 15:41:03,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10050 states. [2020-10-27 15:41:03,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10050 states to 10050 states and 15223 transitions. [2020-10-27 15:41:03,244 INFO L78 Accepts]: Start accepts. Automaton has 10050 states and 15223 transitions. Word has length 239 [2020-10-27 15:41:03,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:03,245 INFO L481 AbstractCegarLoop]: Abstraction has 10050 states and 15223 transitions. [2020-10-27 15:41:03,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:41:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand 10050 states and 15223 transitions. [2020-10-27 15:41:03,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-27 15:41:03,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:03,282 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:03,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:41:03,282 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:03,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:03,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1570765642, now seen corresponding path program 1 times [2020-10-27 15:41:03,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:03,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015997191] [2020-10-27 15:41:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:03,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:04,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:04,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:06,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:06,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-27 15:41:06,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:41:06,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3472 [2020-10-27 15:41:06,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:06,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:41:06,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 15:41:06,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 15:41:06,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:07,188 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:07,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:07,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:07,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:07,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:07,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:41:07,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:07,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:07,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:07,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:07,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:07,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:41:07,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:07,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 15:41:07,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:07,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:07,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:07,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:41:07,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:07,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:41:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:07,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:07,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:07,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:07,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 15:41:07,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:41:07,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 15:41:07,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:41:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 15:41:07,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 14 proven. 54 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 15:41:07,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015997191] [2020-10-27 15:41:07,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:07,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:41:07,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413905376] [2020-10-27 15:41:07,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:41:07,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:07,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:41:07,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:41:07,647 INFO L87 Difference]: Start difference. First operand 10050 states and 15223 transitions. Second operand 7 states. [2020-10-27 15:41:07,915 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:41:08,467 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:11,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:11,935 INFO L93 Difference]: Finished difference Result 28887 states and 48065 transitions. [2020-10-27 15:41:11,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:41:11,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-27 15:41:11,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:12,068 INFO L225 Difference]: With dead ends: 28887 [2020-10-27 15:41:12,068 INFO L226 Difference]: Without dead ends: 18946 [2020-10-27 15:41:12,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:41:12,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18946 states. [2020-10-27 15:41:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18946 to 18731. [2020-10-27 15:41:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18731 states. [2020-10-27 15:41:13,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18731 states to 18731 states and 28275 transitions. [2020-10-27 15:41:13,088 INFO L78 Accepts]: Start accepts. Automaton has 18731 states and 28275 transitions. Word has length 261 [2020-10-27 15:41:13,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:13,089 INFO L481 AbstractCegarLoop]: Abstraction has 18731 states and 28275 transitions. [2020-10-27 15:41:13,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:41:13,089 INFO L276 IsEmpty]: Start isEmpty. Operand 18731 states and 28275 transitions. [2020-10-27 15:41:13,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-27 15:41:13,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:13,169 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:41:13,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:41:13,170 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:13,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:13,171 INFO L82 PathProgramCache]: Analyzing trace with hash 519142732, now seen corresponding path program 1 times [2020-10-27 15:41:13,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:13,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870640226] [2020-10-27 15:41:13,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:13,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:13,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:18,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:18,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-27 15:41:18,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:41:18,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 15:41:18,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:18,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:41:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 15:41:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 15:41:18,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:18,552 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:18,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:18,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:18,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:18,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:18,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:18,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:41:18,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:18,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:18,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:18,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:18,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:18,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:41:18,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 15:41:18,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 15:41:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:18,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:41:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:18,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:18,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:18,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 15:41:18,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:41:18,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 15:41:18,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:41:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 15:41:18,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:18,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 15:41:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:18,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:19,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:19,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 15:41:19,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:19,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 15:41:19,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:41:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 15:41:19,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 142 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 15:41:19,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870640226] [2020-10-27 15:41:19,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:19,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:41:19,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089476141] [2020-10-27 15:41:19,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:41:19,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:19,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:41:19,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:41:19,191 INFO L87 Difference]: Start difference. First operand 18731 states and 28275 transitions. Second operand 8 states. [2020-10-27 15:41:19,672 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:20,510 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:23,691 INFO L93 Difference]: Finished difference Result 38208 states and 65242 transitions. [2020-10-27 15:41:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:41:23,692 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 300 [2020-10-27 15:41:23,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:23,817 INFO L225 Difference]: With dead ends: 38208 [2020-10-27 15:41:23,817 INFO L226 Difference]: Without dead ends: 19586 [2020-10-27 15:41:23,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-10-27 15:41:23,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19586 states. [2020-10-27 15:41:24,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19586 to 17683. [2020-10-27 15:41:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17683 states. [2020-10-27 15:41:24,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17683 states to 17683 states and 24093 transitions. [2020-10-27 15:41:24,785 INFO L78 Accepts]: Start accepts. Automaton has 17683 states and 24093 transitions. Word has length 300 [2020-10-27 15:41:24,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:24,785 INFO L481 AbstractCegarLoop]: Abstraction has 17683 states and 24093 transitions. [2020-10-27 15:41:24,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:41:24,786 INFO L276 IsEmpty]: Start isEmpty. Operand 17683 states and 24093 transitions. [2020-10-27 15:41:24,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-27 15:41:24,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:24,848 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:41:24,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:41:24,849 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:24,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:24,849 INFO L82 PathProgramCache]: Analyzing trace with hash 2010703358, now seen corresponding path program 1 times [2020-10-27 15:41:24,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:24,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929612829] [2020-10-27 15:41:24,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:24,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:25,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:25,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:29,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:29,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-27 15:41:29,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:41:29,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 15:41:29,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:29,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:29,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 15:41:29,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 15:41:29,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:30,247 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:30,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:30,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:30,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:30,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:30,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:30,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:41:30,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:30,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:30,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:30,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:30,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:30,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:30,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:41:30,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:30,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:41:30,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:30,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:30,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:41:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:30,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:30,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:30,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 15:41:30,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:30,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 15:41:30,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:30,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:30,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:30,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 15:41:30,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:30,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 15:41:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:30,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:30,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:30,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 15:41:30,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:30,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 15:41:30,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:30,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:41:30,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 15:41:30,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:41:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 15:41:30,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929612829] [2020-10-27 15:41:30,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:30,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:41:30,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862505782] [2020-10-27 15:41:30,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:41:30,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:30,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:41:30,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:41:30,830 INFO L87 Difference]: Start difference. First operand 17683 states and 24093 transitions. Second operand 7 states. [2020-10-27 15:41:31,116 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:32,156 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:34,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:34,939 INFO L93 Difference]: Finished difference Result 43669 states and 61342 transitions. [2020-10-27 15:41:34,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:41:34,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-27 15:41:34,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:35,041 INFO L225 Difference]: With dead ends: 43669 [2020-10-27 15:41:35,041 INFO L226 Difference]: Without dead ends: 26095 [2020-10-27 15:41:35,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:41:35,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26095 states. [2020-10-27 15:41:35,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26095 to 25978. [2020-10-27 15:41:35,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25978 states. [2020-10-27 15:41:35,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25978 states to 25978 states and 34305 transitions. [2020-10-27 15:41:35,780 INFO L78 Accepts]: Start accepts. Automaton has 25978 states and 34305 transitions. Word has length 306 [2020-10-27 15:41:35,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:35,781 INFO L481 AbstractCegarLoop]: Abstraction has 25978 states and 34305 transitions. [2020-10-27 15:41:35,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:41:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 25978 states and 34305 transitions. [2020-10-27 15:41:35,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-27 15:41:35,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:35,839 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:35,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:41:35,839 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:35,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:35,840 INFO L82 PathProgramCache]: Analyzing trace with hash -724992934, now seen corresponding path program 1 times [2020-10-27 15:41:35,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:35,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995359388] [2020-10-27 15:41:35,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:36,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:36,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:37,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:37,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:40,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:40,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-27 15:41:40,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:41:40,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 15:41:40,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:40,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:40,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-27 15:41:40,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-27 15:41:40,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:41,438 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:41,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:41,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:41,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:41,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:41,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:41:41,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:41,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:41,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:41,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:41,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:41:41,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:41,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:41:41,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:41,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:41,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:41,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:41,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:41:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:41,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:41,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:41,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 15:41:41,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:41,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-27 15:41:41,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 15:41:41,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:41:41,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995359388] [2020-10-27 15:41:41,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:41,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 15:41:41,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717027324] [2020-10-27 15:41:41,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 15:41:41,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:41,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 15:41:41,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:41:41,975 INFO L87 Difference]: Start difference. First operand 25978 states and 34305 transitions. Second operand 6 states. [2020-10-27 15:41:42,227 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:42,904 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:41:46,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:46,806 INFO L93 Difference]: Finished difference Result 88535 states and 118462 transitions. [2020-10-27 15:41:46,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 15:41:46,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 334 [2020-10-27 15:41:46,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:47,091 INFO L225 Difference]: With dead ends: 88535 [2020-10-27 15:41:47,091 INFO L226 Difference]: Without dead ends: 62666 [2020-10-27 15:41:47,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:41:47,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62666 states. [2020-10-27 15:41:48,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62666 to 60864. [2020-10-27 15:41:48,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60864 states. [2020-10-27 15:41:48,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60864 states to 60864 states and 79313 transitions. [2020-10-27 15:41:48,606 INFO L78 Accepts]: Start accepts. Automaton has 60864 states and 79313 transitions. Word has length 334 [2020-10-27 15:41:48,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:48,607 INFO L481 AbstractCegarLoop]: Abstraction has 60864 states and 79313 transitions. [2020-10-27 15:41:48,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 15:41:48,608 INFO L276 IsEmpty]: Start isEmpty. Operand 60864 states and 79313 transitions. [2020-10-27 15:41:48,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-27 15:41:48,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:48,804 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:41:48,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 15:41:48,805 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:48,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:48,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1633404193, now seen corresponding path program 1 times [2020-10-27 15:41:48,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:48,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047585204] [2020-10-27 15:41:48,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:49,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:49,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:53,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:53,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-27 15:41:53,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:41:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 15:41:53,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 15:41:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 15:41:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:54,212 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:54,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:54,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:54,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:54,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:54,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:54,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:41:54,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:54,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:54,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:54,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:54,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:54,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:54,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:54,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:54,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:41:54,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:54,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 15:41:54,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:54,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:54,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:54,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:54,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:54,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:41:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:54,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:54,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:54,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 15:41:54,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:54,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 15:41:54,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 15:41:54,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:54,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 15:41:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:54,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:54,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:41:54,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:54,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 15:41:54,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:54,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:54,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:41:54,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:41:54,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:54,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 15:41:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:54,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:54,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:54,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 15:41:54,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:54,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 15:41:54,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 15:41:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:54,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 183 proven. 16 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 15:41:54,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047585204] [2020-10-27 15:41:54,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:54,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:41:54,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014788985] [2020-10-27 15:41:54,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:41:54,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:54,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:41:54,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:41:54,953 INFO L87 Difference]: Start difference. First operand 60864 states and 79313 transitions. Second operand 7 states. [2020-10-27 15:41:55,228 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:57,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:57,796 INFO L93 Difference]: Finished difference Result 118799 states and 154935 transitions. [2020-10-27 15:41:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 15:41:57,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 355 [2020-10-27 15:41:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:58,061 INFO L225 Difference]: With dead ends: 118799 [2020-10-27 15:41:58,061 INFO L226 Difference]: Without dead ends: 58044 [2020-10-27 15:41:58,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:41:58,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58044 states. [2020-10-27 15:41:59,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58044 to 57992. [2020-10-27 15:41:59,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57992 states. [2020-10-27 15:42:00,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57992 states to 57992 states and 73974 transitions. [2020-10-27 15:42:00,158 INFO L78 Accepts]: Start accepts. Automaton has 57992 states and 73974 transitions. Word has length 355 [2020-10-27 15:42:00,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:42:00,159 INFO L481 AbstractCegarLoop]: Abstraction has 57992 states and 73974 transitions. [2020-10-27 15:42:00,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:42:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand 57992 states and 73974 transitions. [2020-10-27 15:42:00,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-27 15:42:00,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:42:00,242 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:42:00,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 15:42:00,242 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:42:00,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:42:00,243 INFO L82 PathProgramCache]: Analyzing trace with hash -75124259, now seen corresponding path program 1 times [2020-10-27 15:42:00,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:42:00,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719583095] [2020-10-27 15:42:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:42:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:00,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:03,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:05,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:05,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-27 15:42:05,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:42:05,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-27 15:42:05,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 15:42:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 15:42:05,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:05,725 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:42:05,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:42:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:05,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:05,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:05,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:42:05,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:05,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:42:05,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:05,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:05,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:05,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:05,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:05,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:42:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:05,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:05,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:05,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 15:42:05,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:05,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 15:42:05,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:42:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 15:42:05,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:06,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 15:42:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:06,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:06,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:06,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 15:42:06,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:06,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 15:42:06,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:42:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 15:42:06,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 15:42:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:06,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:06,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:06,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 15:42:06,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:06,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 15:42:06,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 15:42:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:06,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 185 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 15:42:06,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719583095] [2020-10-27 15:42:06,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:42:06,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:42:06,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40109032] [2020-10-27 15:42:06,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:42:06,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:42:06,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:42:06,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:42:06,332 INFO L87 Difference]: Start difference. First operand 57992 states and 73974 transitions. Second operand 8 states. [2020-10-27 15:42:06,620 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:42:09,174 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:42:13,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:42:13,266 INFO L93 Difference]: Finished difference Result 213784 states and 281003 transitions. [2020-10-27 15:42:13,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:42:13,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 368 [2020-10-27 15:42:13,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:42:14,144 INFO L225 Difference]: With dead ends: 213784 [2020-10-27 15:42:14,144 INFO L226 Difference]: Without dead ends: 155901 [2020-10-27 15:42:14,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 15:42:14,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155901 states. [2020-10-27 15:42:18,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155901 to 154737. [2020-10-27 15:42:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154737 states. [2020-10-27 15:42:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154737 states to 154737 states and 198429 transitions. [2020-10-27 15:42:18,696 INFO L78 Accepts]: Start accepts. Automaton has 154737 states and 198429 transitions. Word has length 368 [2020-10-27 15:42:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:42:18,697 INFO L481 AbstractCegarLoop]: Abstraction has 154737 states and 198429 transitions. [2020-10-27 15:42:18,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:42:18,697 INFO L276 IsEmpty]: Start isEmpty. Operand 154737 states and 198429 transitions. [2020-10-27 15:42:19,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-27 15:42:19,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:42:19,127 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 15:42:19,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 15:42:19,128 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:42:19,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:42:19,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1452447616, now seen corresponding path program 1 times [2020-10-27 15:42:19,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:42:19,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372223444] [2020-10-27 15:42:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:42:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:19,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:24,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:24,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-27 15:42:24,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:42:24,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 15:42:24,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-27 15:42:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 15:42:24,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:24,555 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:42:24,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:42:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:24,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:24,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:24,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:42:24,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:42:24,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:24,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:24,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:42:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:24,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:24,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:24,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:42:24,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:24,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:42:24,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:24,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:24,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:42:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:24,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:24,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:24,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 15:42:24,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:24,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-27 15:42:24,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:24,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:42:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-27 15:42:24,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:25,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-27 15:42:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:25,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:25,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:25,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:42:25,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:25,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 15:42:25,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:25,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:25,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:42:25,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 15:42:25,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:25,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-27 15:42:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:25,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:25,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:25,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 15:42:25,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:25,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 15:42:25,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:25,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:25,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 15:42:25,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:25,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 208 proven. 10 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 15:42:25,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372223444] [2020-10-27 15:42:25,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:42:25,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:42:25,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661798358] [2020-10-27 15:42:25,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:42:25,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:42:25,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:42:25,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:42:25,326 INFO L87 Difference]: Start difference. First operand 154737 states and 198429 transitions. Second operand 7 states. [2020-10-27 15:42:25,701 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:42:26,214 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:42:32,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:42:32,728 INFO L93 Difference]: Finished difference Result 282005 states and 378942 transitions. [2020-10-27 15:42:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:42:32,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 384 [2020-10-27 15:42:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:42:33,433 INFO L225 Difference]: With dead ends: 282005 [2020-10-27 15:42:33,433 INFO L226 Difference]: Without dead ends: 127377 [2020-10-27 15:42:33,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:42:33,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127377 states. [2020-10-27 15:42:36,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127377 to 109784. [2020-10-27 15:42:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109784 states. [2020-10-27 15:42:37,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109784 states to 109784 states and 132995 transitions. [2020-10-27 15:42:37,047 INFO L78 Accepts]: Start accepts. Automaton has 109784 states and 132995 transitions. Word has length 384 [2020-10-27 15:42:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:42:37,048 INFO L481 AbstractCegarLoop]: Abstraction has 109784 states and 132995 transitions. [2020-10-27 15:42:37,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:42:37,048 INFO L276 IsEmpty]: Start isEmpty. Operand 109784 states and 132995 transitions. [2020-10-27 15:42:37,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-27 15:42:37,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:42:37,124 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:37,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 15:42:37,125 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:42:37,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:42:37,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1599729476, now seen corresponding path program 1 times [2020-10-27 15:42:37,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:42:37,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002878874] [2020-10-27 15:42:37,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:42:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:37,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:42,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:42,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 442 [2020-10-27 15:42:42,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:42:42,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 15:42:42,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:42:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-27 15:42:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 15:42:42,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:42,838 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:42:42,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:42:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:42,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:42,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:42,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:42:42,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:42:42,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:43,006 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:42:43,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:42:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:43,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:43,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:43,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:42:43,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:43,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:42:43,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:43,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:43,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:42:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:43,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:43,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 15:42:43,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:43,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-27 15:42:43,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:42:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-27 15:42:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:43,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-27 15:42:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:43,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:43,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:43,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 15:42:43,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:43,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 15:42:43,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:42:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 15:42:43,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:43,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-27 15:42:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:43,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:43,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:43,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:42:43,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:43,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 15:42:43,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:43,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:43,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:42:43,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 15:42:43,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:43,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-27 15:42:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:43,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:43,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:43,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 15:42:43,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:43,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 15:42:43,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 15:42:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:43,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 292 proven. 44 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 15:42:43,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002878874] [2020-10-27 15:42:43,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:42:43,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:42:43,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556688547] [2020-10-27 15:42:43,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:42:43,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:42:43,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:42:43,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:42:43,747 INFO L87 Difference]: Start difference. First operand 109784 states and 132995 transitions. Second operand 7 states. [2020-10-27 15:42:44,123 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:42:46,102 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 159