/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:58:53,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:58:53,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:58:53,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:58:53,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:58:53,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:58:53,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:58:53,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:58:53,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:58:53,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:58:53,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:58:53,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:58:53,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:58:53,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:58:53,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:58:53,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:58:53,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:58:53,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:58:53,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:58:53,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:58:53,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:58:53,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:58:53,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:58:53,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:58:53,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:58:53,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:58:53,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:58:53,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:58:53,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:58:53,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:58:53,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:58:53,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:58:53,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:58:53,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:58:53,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:58:53,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:58:53,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:58:53,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:58:53,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:58:53,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:58:53,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:58:53,976 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 [2020-10-29 04:58:54,031 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:58:54,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:58:54,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:58:54,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:58:54,043 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:58:54,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:58:54,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:58:54,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:58:54,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:58:54,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:58:54,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:58:54,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:58:54,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:58:54,046 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:58:54,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:58:54,046 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:58:54,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:58:54,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:58:54,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:58:54,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:58:54,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:58:54,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:58:54,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:58:54,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:58:54,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:58:54,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:58:54,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:58:54,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:58:54,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:58:54,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:58:54,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:58:54,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:58:54,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:58:54,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:58:54,473 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:58:54,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label45.c [2020-10-29 04:58:54,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74181261c/e480c938258d46238391435494998275/FLAG69fdfb20f [2020-10-29 04:58:55,300 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:58:55,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label45.c [2020-10-29 04:58:55,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74181261c/e480c938258d46238391435494998275/FLAG69fdfb20f [2020-10-29 04:58:55,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74181261c/e480c938258d46238391435494998275 [2020-10-29 04:58:55,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:58:55,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:58:55,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:58:55,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:58:55,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:58:55,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:58:55" (1/1) ... [2020-10-29 04:58:55,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52847562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:55, skipping insertion in model container [2020-10-29 04:58:55,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:58:55" (1/1) ... [2020-10-29 04:58:55,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:58:55,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:58:56,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:58:56,295 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:58:56,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:58:56,688 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:58:56,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:56 WrapperNode [2020-10-29 04:58:56,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:58:56,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:58:56,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:58:56,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:58:56,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:56" (1/1) ... [2020-10-29 04:58:56,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:56" (1/1) ... [2020-10-29 04:58:56,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:56" (1/1) ... [2020-10-29 04:58:56,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:56" (1/1) ... [2020-10-29 04:58:56,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:56" (1/1) ... [2020-10-29 04:58:56,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:56" (1/1) ... [2020-10-29 04:58:56,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:56" (1/1) ... [2020-10-29 04:58:56,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:58:56,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:58:56,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:58:56,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:58:56,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:56" (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 [2020-10-29 04:58:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:58:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:58:57,024 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:58:57,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:58:57,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:58:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:58:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:58:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:58:57,026 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:58:57,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:58:57,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:58:57,027 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:58:57,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:58:57,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:58:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:58:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:58:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:58:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:58:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:58:59,225 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:58:59,225 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:58:59,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:58:59 BoogieIcfgContainer [2020-10-29 04:58:59,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:58:59,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:58:59,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:58:59,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:58:59,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:58:55" (1/3) ... [2020-10-29 04:58:59,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a0b7c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:58:59, skipping insertion in model container [2020-10-29 04:58:59,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:56" (2/3) ... [2020-10-29 04:58:59,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a0b7c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:58:59, skipping insertion in model container [2020-10-29 04:58:59,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:58:59" (3/3) ... [2020-10-29 04:58:59,237 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label45.c [2020-10-29 04:58:59,249 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:58:59,255 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:58:59,270 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:58:59,300 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:58:59,300 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:58:59,300 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:58:59,300 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:58:59,301 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:58:59,301 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:58:59,301 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:58:59,301 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:58:59,326 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:58:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 04:58:59,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:59,343 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] [2020-10-29 04:58:59,344 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:59,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:59,351 INFO L82 PathProgramCache]: Analyzing trace with hash 38750596, now seen corresponding path program 1 times [2020-10-29 04:58:59,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:59,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044010460] [2020-10-29 04:58:59,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:59,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:00,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:04,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:04,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 04:59:04,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:04,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 04:59:04,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:04,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:59:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:59:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 04:59:04,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:59:05,415 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:05,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:05,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:05,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:05,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:05,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:05,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 04:59:05,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:05,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:59:05,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:05,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044010460] [2020-10-29 04:59:05,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:59:05,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:59:05,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777467563] [2020-10-29 04:59:05,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:59:05,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:05,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:59:05,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:59:05,606 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:59:05,934 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:09,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:09,430 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-29 04:59:09,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:09,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-29 04:59:09,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:09,452 INFO L225 Difference]: With dead ends: 889 [2020-10-29 04:59:09,452 INFO L226 Difference]: Without dead ends: 481 [2020-10-29 04:59:09,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:09,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-29 04:59:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-29 04:59:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-29 04:59:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-29 04:59:09,570 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 151 [2020-10-29 04:59:09,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:09,571 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-29 04:59:09,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:59:09,571 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-29 04:59:09,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 04:59:09,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:09,586 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:59:09,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:59:09,587 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:09,588 INFO L82 PathProgramCache]: Analyzing trace with hash -816271309, now seen corresponding path program 1 times [2020-10-29 04:59:09,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:09,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663949724] [2020-10-29 04:59:09,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:09,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:10,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:11,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:11,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 04:59:11,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:11,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1932 [2020-10-29 04:59:11,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:11,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:59:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 04:59:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:12,088 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:12,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:12,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:12,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:12,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:12,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:59:12,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:12,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:12,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:12,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:12,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:12,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:59:12,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:59:12,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:12,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:59:12,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:12,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663949724] [2020-10-29 04:59:12,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:12,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:59:12,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778505241] [2020-10-29 04:59:12,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:59:12,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:12,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:59:12,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:12,351 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 6 states. [2020-10-29 04:59:12,704 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:12,949 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:59:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:17,350 INFO L93 Difference]: Finished difference Result 1791 states and 2805 transitions. [2020-10-29 04:59:17,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:59:17,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-10-29 04:59:17,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:17,362 INFO L225 Difference]: With dead ends: 1791 [2020-10-29 04:59:17,362 INFO L226 Difference]: Without dead ends: 1321 [2020-10-29 04:59:17,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:59:17,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-10-29 04:59:17,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1314. [2020-10-29 04:59:17,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-29 04:59:17,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1858 transitions. [2020-10-29 04:59:17,462 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1858 transitions. Word has length 160 [2020-10-29 04:59:17,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:17,463 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1858 transitions. [2020-10-29 04:59:17,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:59:17,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1858 transitions. [2020-10-29 04:59:17,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-29 04:59:17,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:17,472 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:17,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:59:17,472 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:17,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:17,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1305482788, now seen corresponding path program 1 times [2020-10-29 04:59:17,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:17,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540015408] [2020-10-29 04:59:17,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:17,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:18,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:19,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:19,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-29 04:59:19,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:19,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2196 [2020-10-29 04:59:19,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:19,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 04:59:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 04:59:19,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:20,224 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:20,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:20,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:20,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:20,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:20,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:20,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:59:20,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:20,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:20,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:20,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:20,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:20,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:59:20,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:20,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 04:59:20,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:20,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:20,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:20,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 04:59:20,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:20,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540015408] [2020-10-29 04:59:20,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:20,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:20,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625384608] [2020-10-29 04:59:20,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:20,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:20,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:20,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:20,635 INFO L87 Difference]: Start difference. First operand 1314 states and 1858 transitions. Second operand 5 states. [2020-10-29 04:59:20,908 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:59:24,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:24,096 INFO L93 Difference]: Finished difference Result 3903 states and 5634 transitions. [2020-10-29 04:59:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:24,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-29 04:59:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:24,118 INFO L225 Difference]: With dead ends: 3903 [2020-10-29 04:59:24,118 INFO L226 Difference]: Without dead ends: 2595 [2020-10-29 04:59:24,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:24,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2020-10-29 04:59:24,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2573. [2020-10-29 04:59:24,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-10-29 04:59:24,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 3657 transitions. [2020-10-29 04:59:24,233 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 3657 transitions. Word has length 187 [2020-10-29 04:59:24,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:24,233 INFO L481 AbstractCegarLoop]: Abstraction has 2573 states and 3657 transitions. [2020-10-29 04:59:24,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:24,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 3657 transitions. [2020-10-29 04:59:24,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-29 04:59:24,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:24,244 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 04:59:24,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:59:24,244 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:24,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:24,245 INFO L82 PathProgramCache]: Analyzing trace with hash 96655298, now seen corresponding path program 1 times [2020-10-29 04:59:24,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:24,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76629725] [2020-10-29 04:59:24,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:24,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:24,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:24,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:27,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:29,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:29,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-29 04:59:29,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:59:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 04:59:29,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:29,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 04:59:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 04:59:29,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:29,768 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:29,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:29,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:29,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:29,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:29,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:29,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:59:29,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:29,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:29,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:29,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:29,922 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:59:29,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:29,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:29,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:29,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 04:59:29,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:29,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:59:29,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:29,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:29,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:29,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:29,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:29,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:29,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:59:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:29,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:30,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:30,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 04:59:30,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:30,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 04:59:30,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:30,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:59:30,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 04:59:30,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76629725] [2020-10-29 04:59:30,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:30,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:30,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962131308] [2020-10-29 04:59:30,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:30,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:30,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:30,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:30,166 INFO L87 Difference]: Start difference. First operand 2573 states and 3657 transitions. Second operand 5 states. [2020-10-29 04:59:30,415 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:59:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:33,344 INFO L93 Difference]: Finished difference Result 6405 states and 9333 transitions. [2020-10-29 04:59:33,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:33,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-29 04:59:33,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:33,371 INFO L225 Difference]: With dead ends: 6405 [2020-10-29 04:59:33,372 INFO L226 Difference]: Without dead ends: 3838 [2020-10-29 04:59:33,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:33,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3838 states. [2020-10-29 04:59:33,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3838 to 3832. [2020-10-29 04:59:33,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3832 states. [2020-10-29 04:59:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 5389 transitions. [2020-10-29 04:59:33,536 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 5389 transitions. Word has length 192 [2020-10-29 04:59:33,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:33,537 INFO L481 AbstractCegarLoop]: Abstraction has 3832 states and 5389 transitions. [2020-10-29 04:59:33,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:33,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 5389 transitions. [2020-10-29 04:59:33,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 04:59:33,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:33,550 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:59:33,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:59:33,550 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:33,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:33,551 INFO L82 PathProgramCache]: Analyzing trace with hash 850284426, now seen corresponding path program 1 times [2020-10-29 04:59:33,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:33,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813823070] [2020-10-29 04:59:33,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:33,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:33,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:35,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:35,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:38,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:38,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 04:59:38,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:59:38,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 04:59:38,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:38,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:38,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:38,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 04:59:38,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 04:59:38,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:59:38,957 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:38,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:38,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:38,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:38,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:38,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:38,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:59:38,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:38,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:38,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:38,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:38,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:39,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:39,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:39,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:39,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 04:59:39,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:39,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:59:39,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:39,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:39,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:39,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:59:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:39,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:39,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:59:39,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:39,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 04:59:39,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:39,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:39,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:39,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:59:39,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 04:59:39,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813823070] [2020-10-29 04:59:39,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:39,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:39,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706879153] [2020-10-29 04:59:39,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:39,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:39,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:39,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:39,249 INFO L87 Difference]: Start difference. First operand 3832 states and 5389 transitions. Second operand 5 states. [2020-10-29 04:59:39,672 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:59:42,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:42,564 INFO L93 Difference]: Finished difference Result 11222 states and 16089 transitions. [2020-10-29 04:59:42,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:42,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-29 04:59:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:42,610 INFO L225 Difference]: With dead ends: 11222 [2020-10-29 04:59:42,610 INFO L226 Difference]: Without dead ends: 7396 [2020-10-29 04:59:42,624 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 [2020-10-29 04:59:42,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7396 states. [2020-10-29 04:59:42,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7396 to 7387. [2020-10-29 04:59:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7387 states. [2020-10-29 04:59:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7387 states to 7387 states and 10106 transitions. [2020-10-29 04:59:42,855 INFO L78 Accepts]: Start accepts. Automaton has 7387 states and 10106 transitions. Word has length 196 [2020-10-29 04:59:42,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:42,856 INFO L481 AbstractCegarLoop]: Abstraction has 7387 states and 10106 transitions. [2020-10-29 04:59:42,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:42,856 INFO L276 IsEmpty]: Start isEmpty. Operand 7387 states and 10106 transitions. [2020-10-29 04:59:42,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 04:59:42,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:42,878 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:42,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:59:42,879 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:42,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:42,879 INFO L82 PathProgramCache]: Analyzing trace with hash 438531581, now seen corresponding path program 1 times [2020-10-29 04:59:42,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:42,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793429751] [2020-10-29 04:59:42,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:42,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:43,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:44,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:44,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:47,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:47,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-29 04:59:47,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:59:47,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 04:59:47,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:47,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:47,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:59:47,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:59:47,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 04:59:47,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:48,227 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:48,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:48,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:48,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:48,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:48,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:48,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 04:59:48,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:48,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:48,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:59:48,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:48,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:48,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:48,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:48,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 04:59:48,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:48,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 04:59:48,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:48,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 04:59:48,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:48,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:59:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:48,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:48,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:48,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:59:48,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:48,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 04:59:48,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:48,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:48,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:48,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:48,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:59:48,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 04:59:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:48,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:48,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:59:48,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:59:48,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:48,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 04:59:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 04:59:48,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793429751] [2020-10-29 04:59:48,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:48,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:59:48,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995966200] [2020-10-29 04:59:48,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:59:48,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:48,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:59:48,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:59:48,835 INFO L87 Difference]: Start difference. First operand 7387 states and 10106 transitions. Second operand 9 states. [2020-10-29 04:59:49,092 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:49,899 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:52,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:52,982 INFO L93 Difference]: Finished difference Result 13911 states and 19621 transitions. [2020-10-29 04:59:52,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:59:52,983 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 213 [2020-10-29 04:59:52,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:53,015 INFO L225 Difference]: With dead ends: 13911 [2020-10-29 04:59:53,016 INFO L226 Difference]: Without dead ends: 6530 [2020-10-29 04:59:53,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:59:53,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6530 states. [2020-10-29 04:59:53,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6530 to 6442. [2020-10-29 04:59:53,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6442 states. [2020-10-29 04:59:53,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6442 states to 6442 states and 8008 transitions. [2020-10-29 04:59:53,265 INFO L78 Accepts]: Start accepts. Automaton has 6442 states and 8008 transitions. Word has length 213 [2020-10-29 04:59:53,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:53,265 INFO L481 AbstractCegarLoop]: Abstraction has 6442 states and 8008 transitions. [2020-10-29 04:59:53,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:59:53,266 INFO L276 IsEmpty]: Start isEmpty. Operand 6442 states and 8008 transitions. [2020-10-29 04:59:53,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-29 04:59:53,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:53,285 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:53,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:59:53,285 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:53,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:53,286 INFO L82 PathProgramCache]: Analyzing trace with hash 176497740, now seen corresponding path program 1 times [2020-10-29 04:59:53,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:53,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075626435] [2020-10-29 04:59:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:53,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:53,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:54,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:56,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:58,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:58,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 04:59:58,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:59:58,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 04:59:58,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:58,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:58,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:58,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 04:59:58,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 04:59:58,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:58,740 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:58,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:58,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:58,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:58,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:58,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:58,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:59:58,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:58,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:58,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:58,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:58,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:58,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:59:58,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:58,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:59:58,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:58,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:58,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:58,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:59:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:58,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:58,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:58,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 04:59:58,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:58,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 04:59:58,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:58,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:58,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:59,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:59:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:59,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:59,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:59,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:59:59,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:59,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:59:59,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:59,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:59:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 77 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-29 04:59:59,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075626435] [2020-10-29 04:59:59,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:59,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:59:59,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8627680] [2020-10-29 04:59:59,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:59:59,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:59,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:59:59,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:59,163 INFO L87 Difference]: Start difference. First operand 6442 states and 8008 transitions. Second operand 6 states. [2020-10-29 04:59:59,389 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:00:00,400 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:03,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:03,443 INFO L93 Difference]: Finished difference Result 19635 states and 25154 transitions. [2020-10-29 05:00:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:00:03,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 234 [2020-10-29 05:00:03,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:03,502 INFO L225 Difference]: With dead ends: 19635 [2020-10-29 05:00:03,502 INFO L226 Difference]: Without dead ends: 13199 [2020-10-29 05:00:03,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:00:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2020-10-29 05:00:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13152. [2020-10-29 05:00:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13152 states. [2020-10-29 05:00:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13152 states to 13152 states and 16983 transitions. [2020-10-29 05:00:03,976 INFO L78 Accepts]: Start accepts. Automaton has 13152 states and 16983 transitions. Word has length 234 [2020-10-29 05:00:03,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:03,977 INFO L481 AbstractCegarLoop]: Abstraction has 13152 states and 16983 transitions. [2020-10-29 05:00:03,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:00:03,977 INFO L276 IsEmpty]: Start isEmpty. Operand 13152 states and 16983 transitions. [2020-10-29 05:00:04,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-29 05:00:04,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:04,021 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:04,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:00:04,021 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:04,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:04,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1500088720, now seen corresponding path program 1 times [2020-10-29 05:00:04,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:04,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351952681] [2020-10-29 05:00:04,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:04,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:04,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:05,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:08,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:09,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:09,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-29 05:00:09,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:00:09,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 05:00:09,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:09,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:00:09,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 05:00:09,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-29 05:00:09,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:09,464 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:09,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:09,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:09,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:09,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:09,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:09,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:00:09,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:09,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:09,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:09,651 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:00:09,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:09,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:09,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:09,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:00:09,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:09,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 05:00:09,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:09,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:09,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:09,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:09,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:00:09,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:09,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:00:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:09,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:09,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:09,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:10,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:10,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 05:00:10,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:00:10,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-29 05:00:10,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:10,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 05:00:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 05:00:10,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351952681] [2020-10-29 05:00:10,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:10,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:00:10,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704812397] [2020-10-29 05:00:10,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:00:10,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:10,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:00:10,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:00:10,229 INFO L87 Difference]: Start difference. First operand 13152 states and 16983 transitions. Second operand 5 states. [2020-10-29 05:00:10,633 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:00:13,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:13,740 INFO L93 Difference]: Finished difference Result 32598 states and 43218 transitions. [2020-10-29 05:00:13,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:00:13,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2020-10-29 05:00:13,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:13,806 INFO L225 Difference]: With dead ends: 32598 [2020-10-29 05:00:13,806 INFO L226 Difference]: Without dead ends: 19452 [2020-10-29 05:00:13,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:00:13,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19452 states. [2020-10-29 05:00:14,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19452 to 17988. [2020-10-29 05:00:14,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17988 states. [2020-10-29 05:00:14,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17988 states to 17988 states and 23345 transitions. [2020-10-29 05:00:14,345 INFO L78 Accepts]: Start accepts. Automaton has 17988 states and 23345 transitions. Word has length 265 [2020-10-29 05:00:14,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:14,346 INFO L481 AbstractCegarLoop]: Abstraction has 17988 states and 23345 transitions. [2020-10-29 05:00:14,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:00:14,346 INFO L276 IsEmpty]: Start isEmpty. Operand 17988 states and 23345 transitions. [2020-10-29 05:00:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-29 05:00:14,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:14,410 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:14,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:00:14,410 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:14,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:14,411 INFO L82 PathProgramCache]: Analyzing trace with hash -950106234, now seen corresponding path program 1 times [2020-10-29 05:00:14,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:14,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719779341] [2020-10-29 05:00:14,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:14,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:14,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:15,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:17,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:19,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:19,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-29 05:00:19,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:00:19,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 05:00:19,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:19,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-29 05:00:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 05:00:19,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:19,972 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:19,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:19,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:19,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:19,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:19,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:00:19,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:19,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:20,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:20,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:20,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:20,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:00:20,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:00:20,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:20,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:20,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:00:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:20,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:20,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:20,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 05:00:20,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:20,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 05:00:20,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:20,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:20,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:20,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:20,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 05:00:20,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:20,620 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 05:00:20,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719779341] [2020-10-29 05:00:20,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:20,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:00:20,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478737245] [2020-10-29 05:00:20,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:00:20,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:20,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:00:20,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:00:20,623 INFO L87 Difference]: Start difference. First operand 17988 states and 23345 transitions. Second operand 5 states. [2020-10-29 05:00:21,039 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:00:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:24,451 INFO L93 Difference]: Finished difference Result 45202 states and 59180 transitions. [2020-10-29 05:00:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:00:24,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-29 05:00:24,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:24,546 INFO L225 Difference]: With dead ends: 45202 [2020-10-29 05:00:24,547 INFO L226 Difference]: Without dead ends: 27220 [2020-10-29 05:00:24,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:00:24,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27220 states. [2020-10-29 05:00:25,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27220 to 26166. [2020-10-29 05:00:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26166 states. [2020-10-29 05:00:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26166 states to 26166 states and 33660 transitions. [2020-10-29 05:00:25,414 INFO L78 Accepts]: Start accepts. Automaton has 26166 states and 33660 transitions. Word has length 312 [2020-10-29 05:00:25,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:25,415 INFO L481 AbstractCegarLoop]: Abstraction has 26166 states and 33660 transitions. [2020-10-29 05:00:25,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:00:25,415 INFO L276 IsEmpty]: Start isEmpty. Operand 26166 states and 33660 transitions. [2020-10-29 05:00:25,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-29 05:00:25,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:25,495 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:25,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:00:25,496 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:25,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:25,496 INFO L82 PathProgramCache]: Analyzing trace with hash -387805366, now seen corresponding path program 1 times [2020-10-29 05:00:25,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:25,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833836515] [2020-10-29 05:00:25,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:25,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:29,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:30,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:30,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-29 05:00:30,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:00:30,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 05:00:30,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:30,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-29 05:00:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 05:00:30,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:30,873 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:30,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:30,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:30,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:30,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:30,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:30,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:00:30,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:30,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:30,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:30,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:30,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:30,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:30,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:30,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:31,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:31,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:00:31,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:31,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:00:31,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:31,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:31,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:31,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:00:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:31,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:31,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:31,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:00:31,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:31,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 05:00:31,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:31,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:31,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:31,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:31,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:00:31,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:31,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:00:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:31,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:31,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:31,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 05:00:31,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:31,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-29 05:00:31,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:31,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 05:00:31,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:31,640 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 05:00:31,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833836515] [2020-10-29 05:00:31,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:31,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:00:31,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182975877] [2020-10-29 05:00:31,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:00:31,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:31,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:00:31,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:00:31,642 INFO L87 Difference]: Start difference. First operand 26166 states and 33660 transitions. Second operand 7 states. [2020-10-29 05:00:31,892 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:34,397 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:35,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:35,336 INFO L93 Difference]: Finished difference Result 52175 states and 68610 transitions. [2020-10-29 05:00:35,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:00:35,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2020-10-29 05:00:35,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:35,427 INFO L225 Difference]: With dead ends: 52175 [2020-10-29 05:00:35,427 INFO L226 Difference]: Without dead ends: 26435 [2020-10-29 05:00:35,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:00:35,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26435 states. [2020-10-29 05:00:36,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26435 to 23139. [2020-10-29 05:00:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23139 states. [2020-10-29 05:00:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23139 states to 23139 states and 28508 transitions. [2020-10-29 05:00:36,116 INFO L78 Accepts]: Start accepts. Automaton has 23139 states and 28508 transitions. Word has length 319 [2020-10-29 05:00:36,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:36,117 INFO L481 AbstractCegarLoop]: Abstraction has 23139 states and 28508 transitions. [2020-10-29 05:00:36,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:36,117 INFO L276 IsEmpty]: Start isEmpty. Operand 23139 states and 28508 transitions. [2020-10-29 05:00:36,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-29 05:00:36,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:36,156 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:36,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:00:36,157 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:36,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:36,157 INFO L82 PathProgramCache]: Analyzing trace with hash 139937191, now seen corresponding path program 1 times [2020-10-29 05:00:36,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:36,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451249490] [2020-10-29 05:00:36,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:36,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:36,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:36,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:40,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:41,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:41,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-29 05:00:41,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:00:41,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 05:00:41,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:41,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 05:00:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:00:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-29 05:00:41,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:41,553 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:41,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:41,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:41,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:41,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:41,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:00:41,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:41,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:00:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:41,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:41,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:41,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:41,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:00:41,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:41,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 05:00:41,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:41,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:41,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:41,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:41,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 05:00:41,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:41,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:00:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:41,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:41,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:41,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:00:41,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 05:00:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:41,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 05:00:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:41,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:00:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:41,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:41,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:41,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:00:41,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:41,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 05:00:41,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:41,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:41,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:00:41,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:41,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:00:41,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:41,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 05:00:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:42,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:42,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:42,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 05:00:42,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:42,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-29 05:00:42,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:42,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 05:00:42,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 174 proven. 80 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-29 05:00:42,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451249490] [2020-10-29 05:00:42,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:42,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 05:00:42,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686691256] [2020-10-29 05:00:42,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 05:00:42,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:42,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 05:00:42,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:00:42,537 INFO L87 Difference]: Start difference. First operand 23139 states and 28508 transitions. Second operand 11 states. [2020-10-29 05:00:42,811 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:00:43,522 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 160 [2020-10-29 05:00:44,165 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:44,476 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:00:46,712 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:00:47,534 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 05:00:48,089 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:52,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:52,569 INFO L93 Difference]: Finished difference Result 86030 states and 110433 transitions. [2020-10-29 05:00:52,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 05:00:52,570 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 336 [2020-10-29 05:00:52,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:52,819 INFO L225 Difference]: With dead ends: 86030 [2020-10-29 05:00:52,819 INFO L226 Difference]: Without dead ends: 63316 [2020-10-29 05:00:52,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=403, Invalid=1577, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 05:00:52,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63316 states. [2020-10-29 05:00:54,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63316 to 60756. [2020-10-29 05:00:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60756 states. [2020-10-29 05:00:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60756 states to 60756 states and 75522 transitions. [2020-10-29 05:00:54,738 INFO L78 Accepts]: Start accepts. Automaton has 60756 states and 75522 transitions. Word has length 336 [2020-10-29 05:00:54,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:54,739 INFO L481 AbstractCegarLoop]: Abstraction has 60756 states and 75522 transitions. [2020-10-29 05:00:54,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 05:00:54,739 INFO L276 IsEmpty]: Start isEmpty. Operand 60756 states and 75522 transitions. [2020-10-29 05:00:54,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-29 05:00:54,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:54,830 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:54,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 05:00:54,830 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:54,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1390612965, now seen corresponding path program 1 times [2020-10-29 05:00:54,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:54,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234831996] [2020-10-29 05:00:54,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:54,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:55,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:55,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:55,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:58,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:59,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:59,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-29 05:00:59,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 05:00:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-29 05:00:59,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:59,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 05:00:59,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 05:00:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:00,236 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:00,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:00,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:00,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:00,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:00,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:00,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:01:00,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:00,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:00,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:00,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:00,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:00,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:00,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:01:00,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:01:00,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:00,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:00,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:00,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:01:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:00,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:00,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:00,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:01:00,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:00,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:01:00,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:00,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:00,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:00,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:01:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:00,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:00,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:00,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 05:01:00,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:00,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 05:01:00,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:00,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 05:01:00,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:00,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 05:01:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:00,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:00,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 05:01:00,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:00,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-29 05:01:00,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:00,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:00,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 05:01:00,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-29 05:01:01,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234831996] [2020-10-29 05:01:01,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:01,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:01:01,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462457366] [2020-10-29 05:01:01,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:01:01,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:01,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:01:01,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:01:01,120 INFO L87 Difference]: Start difference. First operand 60756 states and 75522 transitions. Second operand 7 states. [2020-10-29 05:01:01,621 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:01:04,217 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:01:07,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:07,004 INFO L93 Difference]: Finished difference Result 140815 states and 186716 transitions. [2020-10-29 05:01:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:01:07,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-10-29 05:01:07,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:07,438 INFO L225 Difference]: With dead ends: 140815 [2020-10-29 05:01:07,438 INFO L226 Difference]: Without dead ends: 80483 [2020-10-29 05:01:07,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:01:07,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80483 states. [2020-10-29 05:01:10,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80483 to 78083. [2020-10-29 05:01:10,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78083 states. [2020-10-29 05:01:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78083 states to 78083 states and 96894 transitions. [2020-10-29 05:01:10,664 INFO L78 Accepts]: Start accepts. Automaton has 78083 states and 96894 transitions. Word has length 337 [2020-10-29 05:01:10,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:10,664 INFO L481 AbstractCegarLoop]: Abstraction has 78083 states and 96894 transitions. [2020-10-29 05:01:10,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:01:10,664 INFO L276 IsEmpty]: Start isEmpty. Operand 78083 states and 96894 transitions. [2020-10-29 05:01:10,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-29 05:01:10,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:10,960 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:10,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 05:01:10,960 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:10,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:10,961 INFO L82 PathProgramCache]: Analyzing trace with hash -737247559, now seen corresponding path program 1 times [2020-10-29 05:01:10,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:10,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310332775] [2020-10-29 05:01:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:11,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:14,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:16,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:16,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 453 [2020-10-29 05:01:16,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 05:01:16,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 05:01:16,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:16,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:01:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 05:01:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 05:01:16,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:16,324 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:16,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:16,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:16,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:16,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:16,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:16,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:01:16,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:16,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:16,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:16,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:16,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:16,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:16,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:01:16,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:16,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:01:16,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:16,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:16,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:16,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:16,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:01:16,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:01:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:16,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:16,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:16,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:16,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:01:16,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 05:01:16,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:16,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 05:01:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:16,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:01:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:16,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:16,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:16,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 05:01:16,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:16,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 05:01:16,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:16,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 05:01:16,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:16,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 05:01:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:16,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:16,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:01:16,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:16,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:01:16,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:16,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:01:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:16,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:16,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-29 05:01:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:16,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:16,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:01:16,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:01:16,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:16,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 05:01:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:16,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-29 05:01:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:16,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:17,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:17,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 05:01:17,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:17,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 05:01:17,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:17,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:17,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:17,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-29 05:01:17,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:17,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 333 proven. 155 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-29 05:01:17,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310332775] [2020-10-29 05:01:17,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:17,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:01:17,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080313857] [2020-10-29 05:01:17,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:01:17,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:17,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:01:17,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:01:17,240 INFO L87 Difference]: Start difference. First operand 78083 states and 96894 transitions. Second operand 8 states. [2020-10-29 05:01:17,632 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:01:17,998 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:24,386 INFO L93 Difference]: Finished difference Result 149123 states and 193645 transitions. [2020-10-29 05:01:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:01:24,387 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 431 [2020-10-29 05:01:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:24,657 INFO L225 Difference]: With dead ends: 149123 [2020-10-29 05:01:24,657 INFO L226 Difference]: Without dead ends: 71464 [2020-10-29 05:01:24,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 05:01:24,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71464 states. [2020-10-29 05:01:26,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71464 to 67385. [2020-10-29 05:01:26,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67385 states. [2020-10-29 05:01:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67385 states to 67385 states and 82028 transitions. [2020-10-29 05:01:27,123 INFO L78 Accepts]: Start accepts. Automaton has 67385 states and 82028 transitions. Word has length 431 [2020-10-29 05:01:27,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:27,124 INFO L481 AbstractCegarLoop]: Abstraction has 67385 states and 82028 transitions. [2020-10-29 05:01:27,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:01:27,124 INFO L276 IsEmpty]: Start isEmpty. Operand 67385 states and 82028 transitions. [2020-10-29 05:01:27,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-29 05:01:27,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:27,246 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-29 05:01:27,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 05:01:27,246 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:27,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:27,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1249097029, now seen corresponding path program 1 times [2020-10-29 05:01:27,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:27,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428026545] [2020-10-29 05:01:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:27,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:27,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:29,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:29,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:30,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:32,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:32,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 453 [2020-10-29 05:01:32,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 05:01:32,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-29 05:01:32,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:32,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 05:01:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 05:01:32,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:32,924 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:32,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:32,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:32,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:32,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:32,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:32,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:01:32,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:32,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:32,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:32,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:33,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:33,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:33,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:33,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:01:33,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:33,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:01:33,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:33,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:01:33,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:33,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:01:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:33,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:33,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:33,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 05:01:33,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 05:01:33,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:33,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 05:01:33,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:33,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-29 05:01:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:33,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:33,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:33,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:01:33,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:33,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 05:01:33,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:33,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:01:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:33,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:33,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-29 05:01:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:33,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:33,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:33,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:01:33,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:33,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:01:33,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:33,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:33,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:33,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 05:01:33,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:33,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:33,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-29 05:01:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:33,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:33,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:33,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 05:01:33,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:33,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 05:01:33,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:33,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:33,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:33,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-29 05:01:33,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:33,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 293 proven. 127 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-29 05:01:33,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428026545] [2020-10-29 05:01:33,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:33,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:01:33,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101308037] [2020-10-29 05:01:33,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:01:33,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:33,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:01:33,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:01:33,890 INFO L87 Difference]: Start difference. First operand 67385 states and 82028 transitions. Second operand 7 states. [2020-10-29 05:01:34,175 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:36,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:36,711 INFO L93 Difference]: Finished difference Result 102440 states and 125381 transitions. [2020-10-29 05:01:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 05:01:36,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 433 [2020-10-29 05:01:36,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:36,792 INFO L225 Difference]: With dead ends: 102440 [2020-10-29 05:01:36,793 INFO L226 Difference]: Without dead ends: 35688 [2020-10-29 05:01:36,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 05:01:36,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35688 states. [2020-10-29 05:01:37,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35688 to 33542. [2020-10-29 05:01:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33542 states. [2020-10-29 05:01:37,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33542 states to 33542 states and 39754 transitions. [2020-10-29 05:01:37,962 INFO L78 Accepts]: Start accepts. Automaton has 33542 states and 39754 transitions. Word has length 433 [2020-10-29 05:01:37,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:37,962 INFO L481 AbstractCegarLoop]: Abstraction has 33542 states and 39754 transitions. [2020-10-29 05:01:37,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:01:37,962 INFO L276 IsEmpty]: Start isEmpty. Operand 33542 states and 39754 transitions. [2020-10-29 05:01:38,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2020-10-29 05:01:38,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:38,008 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 05:01:38,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 05:01:38,008 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:38,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:38,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1380865451, now seen corresponding path program 1 times [2020-10-29 05:01:38,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:38,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898284684] [2020-10-29 05:01:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:38,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:38,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:39,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:43,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:43,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 544 [2020-10-29 05:01:43,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:01:43,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-29 05:01:43,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:43,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-29 05:01:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 05:01:43,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:43,558 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:43,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:43,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:43,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:43,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:43,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:01:43,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:43,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:43,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:43,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:43,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:43,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:43,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 05:01:43,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 05:01:43,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:43,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:43,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:43,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 05:01:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:43,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:43,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:43,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:01:43,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:43,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:01:43,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:43,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:43,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:43,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:43,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 05:01:43,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:43,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 05:01:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:43,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:44,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:44,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 05:01:44,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:44,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-29 05:01:44,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:44,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:44,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:44,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:44,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 05:01:44,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:44,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-29 05:01:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:44,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:44,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:44,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 05:01:44,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:44,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 05:01:44,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:44,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-29 05:01:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:44,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 486 proven. 122 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-29 05:01:44,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898284684] [2020-10-29 05:01:44,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:44,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:01:44,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463140383] [2020-10-29 05:01:44,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:01:44,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:44,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:01:44,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:01:44,723 INFO L87 Difference]: Start difference. First operand 33542 states and 39754 transitions. Second operand 8 states. [2020-10-29 05:01:45,269 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:46,099 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:47,945 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:01:51,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:51,446 INFO L93 Difference]: Finished difference Result 112822 states and 145884 transitions. [2020-10-29 05:01:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 05:01:51,447 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 526 [2020-10-29 05:01:51,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:51,873 INFO L225 Difference]: With dead ends: 112822 [2020-10-29 05:01:51,874 INFO L226 Difference]: Without dead ends: 81413 [2020-10-29 05:01:51,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 05:01:51,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81413 states. [2020-10-29 05:01:53,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81413 to 76375. [2020-10-29 05:01:53,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76375 states. [2020-10-29 05:01:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76375 states to 76375 states and 89058 transitions. [2020-10-29 05:01:53,852 INFO L78 Accepts]: Start accepts. Automaton has 76375 states and 89058 transitions. Word has length 526 [2020-10-29 05:01:53,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:53,852 INFO L481 AbstractCegarLoop]: Abstraction has 76375 states and 89058 transitions. [2020-10-29 05:01:53,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:01:53,852 INFO L276 IsEmpty]: Start isEmpty. Operand 76375 states and 89058 transitions. [2020-10-29 05:01:54,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2020-10-29 05:01:54,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:54,298 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-29 05:01:54,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 05:01:54,299 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:54,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:54,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1023917293, now seen corresponding path program 1 times [2020-10-29 05:01:54,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:54,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626818852] [2020-10-29 05:01:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:54,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:54,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:56,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:59,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:59,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 579 [2020-10-29 05:01:59,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:01:59,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 05:01:59,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:59,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:59,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:59,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 05:01:59,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 05:01:59,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:59,721 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:59,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:59,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:59,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:59,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:59,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:59,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:01:59,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:59,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:59,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:59,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:59,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:59,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:59,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:59,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:01:59,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:59,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 05:01:59,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:59,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:01:59,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:59,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:01:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:59,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:00,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:00,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 05:02:00,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:00,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 05:02:00,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:00,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:00,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:00,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:00,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 05:02:00,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:00,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-29 05:02:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:00,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:00,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:00,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 05:02:00,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:00,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 05:02:00,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:00,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:00,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-29 05:02:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:00,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:00,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-29 05:02:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:00,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:00,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:00,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 05:02:00,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:00,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 05:02:00,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:00,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:00,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:00,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-29 05:02:00,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:00,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 422 proven. 247 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-10-29 05:02:01,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626818852] [2020-10-29 05:02:01,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:01,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:02:01,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648422139] [2020-10-29 05:02:01,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:02:01,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:01,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:02:01,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:02:01,032 INFO L87 Difference]: Start difference. First operand 76375 states and 89058 transitions. Second operand 7 states. [2020-10-29 05:02:01,438 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 05:02:01,834 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:02:07,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:07,807 INFO L93 Difference]: Finished difference Result 164021 states and 199299 transitions. [2020-10-29 05:02:07,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:02:07,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 561 [2020-10-29 05:02:07,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:08,278 INFO L225 Difference]: With dead ends: 164021 [2020-10-29 05:02:08,278 INFO L226 Difference]: Without dead ends: 89783 [2020-10-29 05:02:08,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:02:08,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89783 states. [2020-10-29 05:02:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89783 to 85983. [2020-10-29 05:02:10,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85983 states. [2020-10-29 05:02:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85983 states to 85983 states and 98908 transitions. [2020-10-29 05:02:10,650 INFO L78 Accepts]: Start accepts. Automaton has 85983 states and 98908 transitions. Word has length 561 [2020-10-29 05:02:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:10,650 INFO L481 AbstractCegarLoop]: Abstraction has 85983 states and 98908 transitions. [2020-10-29 05:02:10,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:02:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 85983 states and 98908 transitions. [2020-10-29 05:02:10,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-10-29 05:02:10,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:10,774 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-29 05:02:10,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 05:02:10,774 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:10,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:10,775 INFO L82 PathProgramCache]: Analyzing trace with hash -2020596374, now seen corresponding path program 1 times [2020-10-29 05:02:10,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:10,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139653162] [2020-10-29 05:02:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:10,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:11,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:15,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:15,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 590 [2020-10-29 05:02:15,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:02:15,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 05:02:15,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:15,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:15,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:15,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-29 05:02:15,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 05:02:15,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:16,124 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:16,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:16,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:16,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:16,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:16,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:02:16,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:16,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:16,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:16,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:16,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:16,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:16,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 05:02:16,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:16,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:02:16,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:16,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:16,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:16,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 05:02:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:16,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking...