/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:36:16,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:36:16,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:36:17,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:36:17,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:36:17,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:36:17,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:36:17,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:36:17,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:36:17,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:36:17,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:36:17,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:36:17,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:36:17,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:36:17,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:36:17,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:36:17,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:36:17,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:36:17,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:36:17,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:36:17,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:36:17,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:36:17,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:36:17,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:36:17,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:36:17,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:36:17,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:36:17,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:36:17,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:36:17,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:36:17,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:36:17,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:36:17,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:36:17,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:36:17,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:36:17,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:36:17,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:36:17,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:36:17,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:36:17,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:36:17,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:36:17,188 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 20:36:17,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:36:17,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:36:17,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:36:17,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:36:17,242 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:36:17,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:36:17,243 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:36:17,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:36:17,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:36:17,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:36:17,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:36:17,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:36:17,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:36:17,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:36:17,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:36:17,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:36:17,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:36:17,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:36:17,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:36:17,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:36:17,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:36:17,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:36:17,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:36:17,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:36:17,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:36:17,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:36:17,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:36:17,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:36:17,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:36:17,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:36:17,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:36:17,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:36:17,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:36:17,663 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:36:17,664 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:36:17,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label51.c [2020-10-26 20:36:17,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90f3d5b5c/2cd9d6d568db42deb0b899b6aa845f2b/FLAGdcc5099ae [2020-10-26 20:36:18,578 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:36:18,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label51.c [2020-10-26 20:36:18,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90f3d5b5c/2cd9d6d568db42deb0b899b6aa845f2b/FLAGdcc5099ae [2020-10-26 20:36:18,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90f3d5b5c/2cd9d6d568db42deb0b899b6aa845f2b [2020-10-26 20:36:18,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:36:18,864 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:36:18,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:36:18,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:36:18,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:36:18,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:36:18" (1/1) ... [2020-10-26 20:36:18,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34350f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:18, skipping insertion in model container [2020-10-26 20:36:18,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:36:18" (1/1) ... [2020-10-26 20:36:18,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:36:18,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:36:19,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:36:19,432 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:36:19,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:36:19,706 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:36:19,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:19 WrapperNode [2020-10-26 20:36:19,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:36:19,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:36:19,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:36:19,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:36:19,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:19" (1/1) ... [2020-10-26 20:36:19,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:19" (1/1) ... [2020-10-26 20:36:19,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:19" (1/1) ... [2020-10-26 20:36:19,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:19" (1/1) ... [2020-10-26 20:36:19,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:19" (1/1) ... [2020-10-26 20:36:19,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:19" (1/1) ... [2020-10-26 20:36:19,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:19" (1/1) ... [2020-10-26 20:36:19,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:36:19,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:36:19,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:36:19,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:36:19,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:36:20,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:36:20,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:36:20,004 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:36:20,004 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:36:20,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:36:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:36:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:36:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:36:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:36:20,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:36:20,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:36:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:36:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:36:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:36:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:36:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:36:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:36:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:36:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:36:21,416 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:36:21,417 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:36:21,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:36:21 BoogieIcfgContainer [2020-10-26 20:36:21,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:36:21,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:36:21,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:36:21,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:36:21,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:36:18" (1/3) ... [2020-10-26 20:36:21,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3690be62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:36:21, skipping insertion in model container [2020-10-26 20:36:21,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:19" (2/3) ... [2020-10-26 20:36:21,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3690be62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:36:21, skipping insertion in model container [2020-10-26 20:36:21,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:36:21" (3/3) ... [2020-10-26 20:36:21,432 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label51.c [2020-10-26 20:36:21,452 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:36:21,459 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:36:21,473 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:36:21,513 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:36:21,514 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:36:21,514 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:36:21,514 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:36:21,514 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:36:21,514 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:36:21,515 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:36:21,515 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:36:21,538 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-26 20:36:21,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-26 20:36:21,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:21,553 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] [2020-10-26 20:36:21,553 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:21,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:21,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1165412251, now seen corresponding path program 1 times [2020-10-26 20:36:21,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:21,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148420860] [2020-10-26 20:36:21,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:21,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:22,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:24,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:24,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 20:36:24,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:24,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2349 [2020-10-26 20:36:24,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 20:36:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:24,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-26 20:36:24,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:36:25,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:25,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:25,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:25,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:25,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:25,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 20:36:25,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:25,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:25,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:25,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:25,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:36:25,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148420860] [2020-10-26 20:36:25,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:36:25,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-26 20:36:25,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161206987] [2020-10-26 20:36:25,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 20:36:25,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:25,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 20:36:25,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:36:25,409 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 12 states. [2020-10-26 20:36:25,679 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-26 20:36:25,899 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-26 20:36:26,105 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-26 20:36:26,308 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-26 20:36:26,877 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 119 [2020-10-26 20:36:27,327 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 118 [2020-10-26 20:36:28,061 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 117 [2020-10-26 20:36:28,845 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 116 [2020-10-26 20:36:29,385 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 114 [2020-10-26 20:36:30,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:30,783 INFO L93 Difference]: Finished difference Result 479 states and 799 transitions. [2020-10-26 20:36:30,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:36:30,786 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-10-26 20:36:30,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:30,803 INFO L225 Difference]: With dead ends: 479 [2020-10-26 20:36:30,803 INFO L226 Difference]: Without dead ends: 206 [2020-10-26 20:36:30,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-26 20:36:30,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-26 20:36:30,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-10-26 20:36:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-26 20:36:30,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 278 transitions. [2020-10-26 20:36:30,884 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 278 transitions. Word has length 113 [2020-10-26 20:36:30,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:30,885 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 278 transitions. [2020-10-26 20:36:30,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 20:36:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 278 transitions. [2020-10-26 20:36:30,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-26 20:36:30,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:30,889 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 20:36:30,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:36:30,890 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:30,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:30,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1302739907, now seen corresponding path program 1 times [2020-10-26 20:36:30,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:30,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237625023] [2020-10-26 20:36:30,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:30,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:31,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:31,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:33,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:33,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-26 20:36:33,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:36:33,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2616 [2020-10-26 20:36:33,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:36:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 20:36:33,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 20:36:33,778 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:36:33,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:33,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:33,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:33,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:33,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:33,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:36:33,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:33,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:33,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:33,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:33,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:33,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:33,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:33,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:33,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:36:33,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:33,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:36:33,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:36:33,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 20:36:33,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237625023] [2020-10-26 20:36:33,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:33,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:36:33,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764139189] [2020-10-26 20:36:33,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:36:33,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:33,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:36:33,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:36:33,973 INFO L87 Difference]: Start difference. First operand 206 states and 278 transitions. Second operand 6 states. [2020-10-26 20:36:35,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:35,369 INFO L93 Difference]: Finished difference Result 485 states and 696 transitions. [2020-10-26 20:36:35,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:36:35,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-26 20:36:35,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:35,378 INFO L225 Difference]: With dead ends: 485 [2020-10-26 20:36:35,378 INFO L226 Difference]: Without dead ends: 345 [2020-10-26 20:36:35,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:35,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-26 20:36:35,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2020-10-26 20:36:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-26 20:36:35,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 467 transitions. [2020-10-26 20:36:35,451 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 467 transitions. Word has length 121 [2020-10-26 20:36:35,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:35,452 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 467 transitions. [2020-10-26 20:36:35,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:36:35,452 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 467 transitions. [2020-10-26 20:36:35,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-26 20:36:35,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:35,460 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-26 20:36:35,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:36:35,460 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:35,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:35,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1786125560, now seen corresponding path program 1 times [2020-10-26 20:36:35,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:35,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328123663] [2020-10-26 20:36:35,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:35,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:35,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:35,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:40,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:40,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:40,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-26 20:36:40,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:36:40,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 20:36:40,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:40,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:36:40,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:40,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 20:36:40,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:40,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:40,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:40,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:40,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:40,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:40,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:36:40,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:40,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:40,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:40,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:40,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:40,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:40,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:40,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:40,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:36:40,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:40,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:36:40,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:40,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:40,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:40,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:36:40,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:40,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:36:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:40,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:40,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:40,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:36:40,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:40,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:36:40,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:40,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:36:40,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:36:40,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328123663] [2020-10-26 20:36:40,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:40,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:36:40,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440025846] [2020-10-26 20:36:40,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:40,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:40,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:40,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:40,758 INFO L87 Difference]: Start difference. First operand 343 states and 467 transitions. Second operand 7 states. [2020-10-26 20:36:42,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:42,334 INFO L93 Difference]: Finished difference Result 925 states and 1316 transitions. [2020-10-26 20:36:42,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:36:42,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-26 20:36:42,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:42,342 INFO L225 Difference]: With dead ends: 925 [2020-10-26 20:36:42,342 INFO L226 Difference]: Without dead ends: 648 [2020-10-26 20:36:42,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:36:42,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-10-26 20:36:42,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 623. [2020-10-26 20:36:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2020-10-26 20:36:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 837 transitions. [2020-10-26 20:36:42,408 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 837 transitions. Word has length 130 [2020-10-26 20:36:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:42,409 INFO L481 AbstractCegarLoop]: Abstraction has 623 states and 837 transitions. [2020-10-26 20:36:42,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:36:42,409 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 837 transitions. [2020-10-26 20:36:42,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-26 20:36:42,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:42,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:42,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:36:42,416 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:42,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:42,416 INFO L82 PathProgramCache]: Analyzing trace with hash 731464983, now seen corresponding path program 1 times [2020-10-26 20:36:42,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:42,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657833702] [2020-10-26 20:36:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:42,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:42,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:43,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:45,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:47,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:47,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-26 20:36:47,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:36:47,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 20:36:47,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:36:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 20:36:47,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:47,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:47,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:47,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:47,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:47,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:36:47,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:47,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:47,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:47,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:47,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:47,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:47,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:47,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:47,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:47,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:36:47,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:47,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:36:47,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:47,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:47,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:36:47,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:47,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:36:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:47,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:47,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:47,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:36:47,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:47,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:36:47,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:47,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:47,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:47,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:36:47,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 20:36:47,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657833702] [2020-10-26 20:36:47,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:47,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:36:47,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973733692] [2020-10-26 20:36:47,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:47,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:47,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:47,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:47,780 INFO L87 Difference]: Start difference. First operand 623 states and 837 transitions. Second operand 7 states. [2020-10-26 20:36:49,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:49,603 INFO L93 Difference]: Finished difference Result 1490 states and 2097 transitions. [2020-10-26 20:36:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 20:36:49,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-26 20:36:49,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:49,611 INFO L225 Difference]: With dead ends: 1490 [2020-10-26 20:36:49,611 INFO L226 Difference]: Without dead ends: 933 [2020-10-26 20:36:49,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:36:49,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2020-10-26 20:36:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 905. [2020-10-26 20:36:49,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-10-26 20:36:49,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1215 transitions. [2020-10-26 20:36:49,681 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1215 transitions. Word has length 133 [2020-10-26 20:36:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:49,681 INFO L481 AbstractCegarLoop]: Abstraction has 905 states and 1215 transitions. [2020-10-26 20:36:49,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:36:49,681 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1215 transitions. [2020-10-26 20:36:49,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-26 20:36:49,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:49,687 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 20:36:49,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:36:49,688 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:49,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:49,689 INFO L82 PathProgramCache]: Analyzing trace with hash 141806016, now seen corresponding path program 1 times [2020-10-26 20:36:49,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:49,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101063178] [2020-10-26 20:36:49,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:49,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:50,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:52,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:52,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:54,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:54,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:54,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 20:36:54,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 20:36:54,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 20:36:54,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:54,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 20:36:54,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:54,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-26 20:36:54,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 20:36:54,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:54,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:54,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:54,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:54,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:54,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:36:54,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:54,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:54,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:54,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:54,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:54,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:54,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:54,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:54,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:54,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:36:54,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:54,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:36:54,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:36:54,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:55,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:36:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:55,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:55,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:55,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:55,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:36:55,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:55,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 20:36:55,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:36:55,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:55,088 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-26 20:36:55,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101063178] [2020-10-26 20:36:55,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:55,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:36:55,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383303101] [2020-10-26 20:36:55,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:36:55,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:55,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:36:55,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:36:55,092 INFO L87 Difference]: Start difference. First operand 905 states and 1215 transitions. Second operand 6 states. [2020-10-26 20:36:56,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:56,457 INFO L93 Difference]: Finished difference Result 1482 states and 2019 transitions. [2020-10-26 20:36:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:36:56,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-26 20:36:56,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:56,468 INFO L225 Difference]: With dead ends: 1482 [2020-10-26 20:36:56,469 INFO L226 Difference]: Without dead ends: 1479 [2020-10-26 20:36:56,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:36:56,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2020-10-26 20:36:56,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1459. [2020-10-26 20:36:56,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2020-10-26 20:36:56,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1965 transitions. [2020-10-26 20:36:56,538 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1965 transitions. Word has length 134 [2020-10-26 20:36:56,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:56,538 INFO L481 AbstractCegarLoop]: Abstraction has 1459 states and 1965 transitions. [2020-10-26 20:36:56,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:36:56,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1965 transitions. [2020-10-26 20:36:56,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-26 20:36:56,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:56,543 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 20:36:56,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:36:56,544 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:56,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:56,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1541515640, now seen corresponding path program 1 times [2020-10-26 20:36:56,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:56,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168514544] [2020-10-26 20:36:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:56,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:56,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:58,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:58,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:58,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-26 20:36:58,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:36:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2375 [2020-10-26 20:36:58,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:36:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 20:36:58,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:59,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:59,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:59,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:59,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:59,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:59,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:36:59,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:59,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:59,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:59,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:59,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:59,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:59,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:36:59,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:59,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:36:59,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:36:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:59,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:36:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:59,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:59,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:59,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:36:59,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:59,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 20:36:59,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:36:59,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:36:59,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168514544] [2020-10-26 20:36:59,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:59,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:36:59,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123164738] [2020-10-26 20:36:59,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:59,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:59,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:59,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:59,254 INFO L87 Difference]: Start difference. First operand 1459 states and 1965 transitions. Second operand 7 states. [2020-10-26 20:36:59,392 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-26 20:37:01,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:37:01,034 INFO L93 Difference]: Finished difference Result 3015 states and 4086 transitions. [2020-10-26 20:37:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:37:01,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-26 20:37:01,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:37:01,045 INFO L225 Difference]: With dead ends: 3015 [2020-10-26 20:37:01,045 INFO L226 Difference]: Without dead ends: 1622 [2020-10-26 20:37:01,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:37:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2020-10-26 20:37:01,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1467. [2020-10-26 20:37:01,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1467 states. [2020-10-26 20:37:01,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 1965 transitions. [2020-10-26 20:37:01,114 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 1965 transitions. Word has length 138 [2020-10-26 20:37:01,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:37:01,114 INFO L481 AbstractCegarLoop]: Abstraction has 1467 states and 1965 transitions. [2020-10-26 20:37:01,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:37:01,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 1965 transitions. [2020-10-26 20:37:01,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-26 20:37:01,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:37:01,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:37:01,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:37:01,120 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:37:01,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:37:01,121 INFO L82 PathProgramCache]: Analyzing trace with hash 937619367, now seen corresponding path program 1 times [2020-10-26 20:37:01,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:37:01,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244204423] [2020-10-26 20:37:01,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:37:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:01,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:01,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:02,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:02,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-26 20:37:02,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:37:02,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1720 [2020-10-26 20:37:02,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:02,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:37:02,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:37:02,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 20:37:02,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:03,038 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:37:03,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:37:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:03,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:03,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:03,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:37:03,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:37:03,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:37:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:37:03,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:03,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:37:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:03,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:03,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:03,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:03,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:37:03,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:37:03,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 20:37:03,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:03,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:03,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:03,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:37:03,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:03,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:37:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:03,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:03,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:03,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:37:03,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:03,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 20:37:03,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:03,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:03,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:37:03,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 20:37:03,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244204423] [2020-10-26 20:37:03,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:37:03,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:37:03,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418379008] [2020-10-26 20:37:03,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:37:03,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:37:03,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:37:03,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:37:03,282 INFO L87 Difference]: Start difference. First operand 1467 states and 1965 transitions. Second operand 7 states. [2020-10-26 20:37:03,449 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-26 20:37:05,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:37:05,083 INFO L93 Difference]: Finished difference Result 2904 states and 3937 transitions. [2020-10-26 20:37:05,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:37:05,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-26 20:37:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:37:05,092 INFO L225 Difference]: With dead ends: 2904 [2020-10-26 20:37:05,092 INFO L226 Difference]: Without dead ends: 1503 [2020-10-26 20:37:05,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:37:05,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2020-10-26 20:37:05,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1469. [2020-10-26 20:37:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-10-26 20:37:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1944 transitions. [2020-10-26 20:37:05,163 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1944 transitions. Word has length 141 [2020-10-26 20:37:05,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:37:05,163 INFO L481 AbstractCegarLoop]: Abstraction has 1469 states and 1944 transitions. [2020-10-26 20:37:05,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:37:05,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1944 transitions. [2020-10-26 20:37:05,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-26 20:37:05,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:37:05,169 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:37:05,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:37:05,169 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:37:05,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:37:05,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1968547685, now seen corresponding path program 1 times [2020-10-26 20:37:05,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:37:05,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967386245] [2020-10-26 20:37:05,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:37:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:05,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:05,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:05,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:06,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:07,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:07,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-26 20:37:07,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:37:07,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2399 [2020-10-26 20:37:07,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:07,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:07,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:37:07,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:37:07,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:07,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:37:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:07,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:07,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:07,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:37:07,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:07,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:37:07,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:07,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:07,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:37:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:07,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:07,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:07,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:37:07,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:07,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:37:07,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:07,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:37:07,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:07,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:37:07,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:07,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:37:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:07,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:07,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:07,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:37:07,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:07,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:37:07,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:37:07,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:07,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:37:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:07,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:07,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:07,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:37:07,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:07,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:37:07,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 20:37:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:07,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 20:37:07,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967386245] [2020-10-26 20:37:07,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:37:07,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:37:07,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467124572] [2020-10-26 20:37:07,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:37:07,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:37:07,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:37:07,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:37:07,871 INFO L87 Difference]: Start difference. First operand 1469 states and 1944 transitions. Second operand 7 states. [2020-10-26 20:37:09,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:37:09,694 INFO L93 Difference]: Finished difference Result 3750 states and 5189 transitions. [2020-10-26 20:37:09,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 20:37:09,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-26 20:37:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:37:09,712 INFO L225 Difference]: With dead ends: 3750 [2020-10-26 20:37:09,712 INFO L226 Difference]: Without dead ends: 2347 [2020-10-26 20:37:09,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:37:09,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-26 20:37:09,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2303. [2020-10-26 20:37:09,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2303 states. [2020-10-26 20:37:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 3050 transitions. [2020-10-26 20:37:09,817 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 3050 transitions. Word has length 151 [2020-10-26 20:37:09,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:37:09,818 INFO L481 AbstractCegarLoop]: Abstraction has 2303 states and 3050 transitions. [2020-10-26 20:37:09,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:37:09,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 3050 transitions. [2020-10-26 20:37:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-26 20:37:09,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:37:09,825 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:37:09,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:37:09,825 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:37:09,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:37:09,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1701986887, now seen corresponding path program 1 times [2020-10-26 20:37:09,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:37:09,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539189817] [2020-10-26 20:37:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:37:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:09,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:10,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:10,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:11,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:11,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-26 20:37:11,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:37:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2121 [2020-10-26 20:37:11,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:37:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:37:11,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:12,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:37:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:12,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:12,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:12,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:37:12,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:12,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:37:12,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:12,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:12,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:12,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:12,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:12,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:37:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:12,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:12,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:37:12,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:12,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:37:12,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:37:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:37:12,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:12,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:37:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:12,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:12,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:12,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:37:12,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 20:37:12,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:37:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:12,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 20:37:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:12,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:12,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:37:12,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:12,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:37:12,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:12,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:12,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 20:37:12,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:12,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 44 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 20:37:12,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539189817] [2020-10-26 20:37:12,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:37:12,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:37:12,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595508695] [2020-10-26 20:37:12,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:37:12,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:37:12,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:37:12,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:37:12,289 INFO L87 Difference]: Start difference. First operand 2303 states and 3050 transitions. Second operand 7 states. [2020-10-26 20:37:13,647 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 20:37:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:37:14,117 INFO L93 Difference]: Finished difference Result 5122 states and 6826 transitions. [2020-10-26 20:37:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:37:14,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-10-26 20:37:14,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:37:14,139 INFO L225 Difference]: With dead ends: 5122 [2020-10-26 20:37:14,139 INFO L226 Difference]: Without dead ends: 2885 [2020-10-26 20:37:14,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:37:14,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-10-26 20:37:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2740. [2020-10-26 20:37:14,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2740 states. [2020-10-26 20:37:14,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 3590 transitions. [2020-10-26 20:37:14,242 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 3590 transitions. Word has length 157 [2020-10-26 20:37:14,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:37:14,243 INFO L481 AbstractCegarLoop]: Abstraction has 2740 states and 3590 transitions. [2020-10-26 20:37:14,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:37:14,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 3590 transitions. [2020-10-26 20:37:14,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-26 20:37:14,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:37:14,251 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:37:14,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 20:37:14,251 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:37:14,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:37:14,252 INFO L82 PathProgramCache]: Analyzing trace with hash 234977850, now seen corresponding path program 1 times [2020-10-26 20:37:14,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:37:14,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985230461] [2020-10-26 20:37:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:37:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:14,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:14,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:14,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:14,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:16,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:18,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:18,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-26 20:37:18,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 20:37:18,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4124 [2020-10-26 20:37:18,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:37:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:37:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 20:37:18,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:37:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:18,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:18,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:18,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:37:18,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:18,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:37:18,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:18,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:37:18,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:18,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:37:18,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:18,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:37:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:18,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:18,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:18,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:18,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:37:18,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:37:18,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:37:18,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:37:18,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:37:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:18,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:18,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:18,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:37:18,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:18,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 20:37:18,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:37:18,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:18,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 20:37:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:18,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:18,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:18,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:37:18,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:18,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:37:18,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 20:37:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:18,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:37:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-26 20:37:18,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985230461] [2020-10-26 20:37:18,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:37:18,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:37:18,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327809730] [2020-10-26 20:37:18,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:37:18,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:37:18,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:37:18,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:37:18,808 INFO L87 Difference]: Start difference. First operand 2740 states and 3590 transitions. Second operand 7 states. [2020-10-26 20:37:18,941 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:37:19,751 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:37:20,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:37:20,880 INFO L93 Difference]: Finished difference Result 5978 states and 7879 transitions. [2020-10-26 20:37:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:37:20,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-26 20:37:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:37:20,898 INFO L225 Difference]: With dead ends: 5978 [2020-10-26 20:37:20,899 INFO L226 Difference]: Without dead ends: 3304 [2020-10-26 20:37:20,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:37:20,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2020-10-26 20:37:21,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 3163. [2020-10-26 20:37:21,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2020-10-26 20:37:21,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4106 transitions. [2020-10-26 20:37:21,025 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4106 transitions. Word has length 160 [2020-10-26 20:37:21,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:37:21,025 INFO L481 AbstractCegarLoop]: Abstraction has 3163 states and 4106 transitions. [2020-10-26 20:37:21,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:37:21,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4106 transitions. [2020-10-26 20:37:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-26 20:37:21,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:37:21,034 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:37:21,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:37:21,035 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:37:21,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:37:21,035 INFO L82 PathProgramCache]: Analyzing trace with hash 146603723, now seen corresponding path program 1 times [2020-10-26 20:37:21,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:37:21,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205897146] [2020-10-26 20:37:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:37:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:21,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:21,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:21,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:22,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:22,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:22,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-26 20:37:22,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:37:22,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1810 [2020-10-26 20:37:22,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:37:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:37:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-26 20:37:22,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:23,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:37:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:23,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:23,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:23,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:37:23,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:23,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:37:23,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:37:23,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:23,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:37:23,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:23,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:37:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:23,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:23,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:23,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:37:23,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:23,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 20:37:23,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:23,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:23,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:23,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 20:37:23,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:23,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:37:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:23,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:23,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:23,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:37:23,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:23,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 20:37:23,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:37:23,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 53 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:37:23,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205897146] [2020-10-26 20:37:23,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:37:23,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:37:23,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288655681] [2020-10-26 20:37:23,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:37:23,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:37:23,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:37:23,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:37:23,381 INFO L87 Difference]: Start difference. First operand 3163 states and 4106 transitions. Second operand 8 states. [2020-10-26 20:37:24,289 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:37:25,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:37:25,494 INFO L93 Difference]: Finished difference Result 6698 states and 8851 transitions. [2020-10-26 20:37:25,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 20:37:25,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2020-10-26 20:37:25,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:37:25,522 INFO L225 Difference]: With dead ends: 6698 [2020-10-26 20:37:25,522 INFO L226 Difference]: Without dead ends: 3601 [2020-10-26 20:37:25,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-26 20:37:25,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2020-10-26 20:37:25,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3443. [2020-10-26 20:37:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3443 states. [2020-10-26 20:37:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 4446 transitions. [2020-10-26 20:37:25,655 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 4446 transitions. Word has length 171 [2020-10-26 20:37:25,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:37:25,655 INFO L481 AbstractCegarLoop]: Abstraction has 3443 states and 4446 transitions. [2020-10-26 20:37:25,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:37:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 4446 transitions. [2020-10-26 20:37:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-26 20:37:25,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:37:25,669 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:37:25,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:37:25,669 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:37:25,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:37:25,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1078424339, now seen corresponding path program 1 times [2020-10-26 20:37:25,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:37:25,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467196193] [2020-10-26 20:37:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:37:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:25,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:25,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:26,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:27,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:27,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-26 20:37:27,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:37:27,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2274 [2020-10-26 20:37:27,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:37:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-26 20:37:27,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:28,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:37:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:28,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:28,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:28,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:37:28,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:28,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:37:28,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:28,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:28,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:37:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:28,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:28,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:28,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:37:28,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:28,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:37:28,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:37:28,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:28,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:37:28,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:28,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:37:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:28,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:28,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:28,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:37:28,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:28,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 20:37:28,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 20:37:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:28,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 20:37:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:28,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:28,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:28,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:37:28,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:28,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:37:28,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:28,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:28,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 20:37:28,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:28,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 66 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 20:37:28,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467196193] [2020-10-26 20:37:28,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:37:28,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:37:28,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873703350] [2020-10-26 20:37:28,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:37:28,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:37:28,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:37:28,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:37:28,323 INFO L87 Difference]: Start difference. First operand 3443 states and 4446 transitions. Second operand 8 states. [2020-10-26 20:37:28,566 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 20:37:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:37:31,708 INFO L93 Difference]: Finished difference Result 10553 states and 14001 transitions. [2020-10-26 20:37:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:37:31,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2020-10-26 20:37:31,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:37:31,748 INFO L225 Difference]: With dead ends: 10553 [2020-10-26 20:37:31,748 INFO L226 Difference]: Without dead ends: 7176 [2020-10-26 20:37:31,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 20:37:31,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7176 states. [2020-10-26 20:37:31,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7176 to 5806. [2020-10-26 20:37:31,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5806 states. [2020-10-26 20:37:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5806 states to 5806 states and 7255 transitions. [2020-10-26 20:37:31,947 INFO L78 Accepts]: Start accepts. Automaton has 5806 states and 7255 transitions. Word has length 179 [2020-10-26 20:37:31,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:37:31,948 INFO L481 AbstractCegarLoop]: Abstraction has 5806 states and 7255 transitions. [2020-10-26 20:37:31,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:37:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 5806 states and 7255 transitions. [2020-10-26 20:37:31,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-26 20:37:31,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:37:31,962 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:37:31,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 20:37:31,962 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:37:31,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:37:31,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1703574866, now seen corresponding path program 1 times [2020-10-26 20:37:31,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:37:31,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748612209] [2020-10-26 20:37:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:37:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:32,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:32,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:32,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:32,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:32,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:34,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:35,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:35,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-26 20:37:35,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 20:37:35,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3969 [2020-10-26 20:37:35,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:35,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 20:37:35,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:37:35,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 20:37:35,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:36,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:37:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:36,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:36,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:36,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:37:36,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:36,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:37:36,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:36,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:37:36,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:36,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:37:36,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:36,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:37:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:36,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:36,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:36,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:36,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:37:36,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:37:36,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:37:36,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:37:36,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:36,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:37:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:36,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:36,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:36,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:36,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:37:36,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:37:36,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 20:37:36,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 20:37:36,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:36,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 20:37:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:36,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:36,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:36,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:37:36,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:36,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 20:37:36,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:37:36,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 62 proven. 24 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-26 20:37:36,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748612209] [2020-10-26 20:37:36,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:37:36,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:37:36,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49127767] [2020-10-26 20:37:36,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:37:36,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:37:36,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:37:36,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:37:36,629 INFO L87 Difference]: Start difference. First operand 5806 states and 7255 transitions. Second operand 9 states. [2020-10-26 20:37:36,765 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-26 20:37:37,456 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:37:38,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:37:38,636 INFO L93 Difference]: Finished difference Result 11002 states and 13805 transitions. [2020-10-26 20:37:38,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:37:38,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 182 [2020-10-26 20:37:38,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:37:38,655 INFO L225 Difference]: With dead ends: 11002 [2020-10-26 20:37:38,655 INFO L226 Difference]: Without dead ends: 5264 [2020-10-26 20:37:38,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-26 20:37:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5264 states. [2020-10-26 20:37:38,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5264 to 4968. [2020-10-26 20:37:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4968 states. [2020-10-26 20:37:38,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4968 states to 4968 states and 5990 transitions. [2020-10-26 20:37:38,797 INFO L78 Accepts]: Start accepts. Automaton has 4968 states and 5990 transitions. Word has length 182 [2020-10-26 20:37:38,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:37:38,797 INFO L481 AbstractCegarLoop]: Abstraction has 4968 states and 5990 transitions. [2020-10-26 20:37:38,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:37:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4968 states and 5990 transitions. [2020-10-26 20:37:38,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-26 20:37:38,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:37:38,809 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:37:38,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 20:37:38,810 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:37:38,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:37:38,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1337965490, now seen corresponding path program 1 times [2020-10-26 20:37:38,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:37:38,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490982124] [2020-10-26 20:37:38,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:37:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:38,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:38,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:39,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:40,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:40,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-26 20:37:40,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:37:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2148 [2020-10-26 20:37:40,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:37:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:37:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 20:37:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:41,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:37:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:41,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:41,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:41,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:37:41,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:37:41,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:41,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:37:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:41,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:41,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:41,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:37:41,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:41,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:37:41,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:37:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:37:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:41,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:37:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:41,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:41,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:41,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 20:37:41,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:41,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 20:37:41,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 20:37:41,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 20:37:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:41,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:41,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:37:41,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:41,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:37:41,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:41,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:41,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:41,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:37:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 76 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 20:37:41,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490982124] [2020-10-26 20:37:41,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:37:41,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:37:41,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335812715] [2020-10-26 20:37:41,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:37:41,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:37:41,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:37:41,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:37:41,398 INFO L87 Difference]: Start difference. First operand 4968 states and 5990 transitions. Second operand 8 states. [2020-10-26 20:37:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:37:43,232 INFO L93 Difference]: Finished difference Result 10597 states and 12794 transitions. [2020-10-26 20:37:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 20:37:43,233 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-26 20:37:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:37:43,255 INFO L225 Difference]: With dead ends: 10597 [2020-10-26 20:37:43,256 INFO L226 Difference]: Without dead ends: 5697 [2020-10-26 20:37:43,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-26 20:37:43,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5697 states. [2020-10-26 20:37:43,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5697 to 5667. [2020-10-26 20:37:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5667 states. [2020-10-26 20:37:43,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5667 states to 5667 states and 6763 transitions. [2020-10-26 20:37:43,473 INFO L78 Accepts]: Start accepts. Automaton has 5667 states and 6763 transitions. Word has length 188 [2020-10-26 20:37:43,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:37:43,473 INFO L481 AbstractCegarLoop]: Abstraction has 5667 states and 6763 transitions. [2020-10-26 20:37:43,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:37:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 5667 states and 6763 transitions. [2020-10-26 20:37:43,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-26 20:37:43,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:37:43,497 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, 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] [2020-10-26 20:37:43,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 20:37:43,497 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:37:43,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:37:43,498 INFO L82 PathProgramCache]: Analyzing trace with hash 774480026, now seen corresponding path program 1 times [2020-10-26 20:37:43,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:37:43,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808448890] [2020-10-26 20:37:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:37:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:43,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:43,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:44,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:44,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:44,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-26 20:37:44,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:37:44,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1281 [2020-10-26 20:37:44,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-26 20:37:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:37:44,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:44,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:37:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:44,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:44,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:44,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:37:44,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:44,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:37:44,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:44,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:44,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:37:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:45,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:45,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:45,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:37:45,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:45,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 20:37:45,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:45,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:45,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:45,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:45,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:45,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:37:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:45,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:45,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:45,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 20:37:45,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:45,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:37:45,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:45,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:37:45,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:45,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 20:37:45,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:45,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 20:37:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:45,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:45,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:45,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:37:45,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:37:45,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:37:45,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-26 20:37:45,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808448890] [2020-10-26 20:37:45,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:37:45,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:37:45,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222981036] [2020-10-26 20:37:45,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:37:45,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:37:45,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:37:45,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:37:45,213 INFO L87 Difference]: Start difference. First operand 5667 states and 6763 transitions. Second operand 7 states. [2020-10-26 20:37:45,754 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 20:37:45,880 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:37:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:37:47,261 INFO L93 Difference]: Finished difference Result 12247 states and 14729 transitions. [2020-10-26 20:37:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:37:47,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-26 20:37:47,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:37:47,287 INFO L225 Difference]: With dead ends: 12247 [2020-10-26 20:37:47,287 INFO L226 Difference]: Without dead ends: 6503 [2020-10-26 20:37:47,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 20:37:47,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6503 states. [2020-10-26 20:37:47,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6503 to 6213. [2020-10-26 20:37:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-10-26 20:37:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 7330 transitions. [2020-10-26 20:37:47,453 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 7330 transitions. Word has length 204 [2020-10-26 20:37:47,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:37:47,453 INFO L481 AbstractCegarLoop]: Abstraction has 6213 states and 7330 transitions. [2020-10-26 20:37:47,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:37:47,453 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 7330 transitions. [2020-10-26 20:37:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-26 20:37:47,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:37:47,472 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:37:47,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 20:37:47,472 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:37:47,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:37:47,472 INFO L82 PathProgramCache]: Analyzing trace with hash -22623036, now seen corresponding path program 1 times [2020-10-26 20:37:47,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:37:47,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914511215] [2020-10-26 20:37:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:37:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:47,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:47,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:48,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:48,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:48,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-26 20:37:48,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:37:48,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1325 [2020-10-26 20:37:48,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-26 20:37:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 20:37:48,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:48,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:37:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:48,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:48,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:48,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:37:48,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:48,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:37:48,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:48,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:48,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:37:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:49,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:49,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:49,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:37:49,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 20:37:49,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:37:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 20:37:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:49,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:37:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:49,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:49,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:49,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 20:37:49,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:49,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 20:37:49,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:49,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:49,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:49,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-26 20:37:49,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:49,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 20:37:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:49,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:49,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:49,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:37:49,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:49,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:37:49,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:37:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:49,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:49,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-26 20:37:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:49,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:49,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:49,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:37:49,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:49,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:37:49,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:49,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:49,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-26 20:37:49,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:49,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 173 proven. 43 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-10-26 20:37:49,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914511215] [2020-10-26 20:37:49,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:37:49,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:37:49,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640895223] [2020-10-26 20:37:49,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:37:49,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:37:49,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:37:49,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:37:49,225 INFO L87 Difference]: Start difference. First operand 6213 states and 7330 transitions. Second operand 7 states. [2020-10-26 20:37:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:37:51,341 INFO L93 Difference]: Finished difference Result 12765 states and 15192 transitions. [2020-10-26 20:37:51,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:37:51,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-26 20:37:51,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:37:51,368 INFO L225 Difference]: With dead ends: 12765 [2020-10-26 20:37:51,369 INFO L226 Difference]: Without dead ends: 6620 [2020-10-26 20:37:51,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:37:51,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6620 states. [2020-10-26 20:37:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6620 to 6340. [2020-10-26 20:37:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6340 states. [2020-10-26 20:37:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6340 states to 6340 states and 7384 transitions. [2020-10-26 20:37:51,533 INFO L78 Accepts]: Start accepts. Automaton has 6340 states and 7384 transitions. Word has length 252 [2020-10-26 20:37:51,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:37:51,533 INFO L481 AbstractCegarLoop]: Abstraction has 6340 states and 7384 transitions. [2020-10-26 20:37:51,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:37:51,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6340 states and 7384 transitions. [2020-10-26 20:37:51,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-26 20:37:51,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:37:51,554 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:37:51,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 20:37:51,554 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:37:51,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:37:51,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1656459632, now seen corresponding path program 1 times [2020-10-26 20:37:51,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:37:51,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425080062] [2020-10-26 20:37:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:37:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:51,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:51,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:52,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:52,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-26 20:37:52,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:37:52,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-26 20:37:52,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:52,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:52,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 20:37:52,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 20:37:52,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:52,460 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:37:52,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:37:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:52,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:52,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:52,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:37:52,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:52,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:37:52,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:52,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:52,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:37:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:52,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:52,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:52,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 20:37:52,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:52,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:37:52,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:52,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:52,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:52,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:52,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:52,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-26 20:37:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:52,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:52,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:52,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 20:37:52,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:52,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:37:52,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:52,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:52,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:52,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:52,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:52,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 20:37:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:52,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:52,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:37:52,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:52,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:37:52,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:52,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:52,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:52,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:52,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:52,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 20:37:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:52,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:52,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:52,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:37:52,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:52,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:37:52,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:37:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-26 20:37:52,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 154 proven. 4 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-26 20:37:52,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425080062] [2020-10-26 20:37:52,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:37:52,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:37:52,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615940669] [2020-10-26 20:37:52,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 20:37:52,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:37:52,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 20:37:52,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:37:52,798 INFO L87 Difference]: Start difference. First operand 6340 states and 7384 transitions. Second operand 5 states. [2020-10-26 20:37:53,734 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-26 20:37:54,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:37:54,180 INFO L93 Difference]: Finished difference Result 12504 states and 14584 transitions. [2020-10-26 20:37:54,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:37:54,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2020-10-26 20:37:54,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:37:54,206 INFO L225 Difference]: With dead ends: 12504 [2020-10-26 20:37:54,207 INFO L226 Difference]: Without dead ends: 6064 [2020-10-26 20:37:54,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:37:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6064 states. [2020-10-26 20:37:54,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6064 to 6064. [2020-10-26 20:37:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6064 states. [2020-10-26 20:37:54,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6064 states to 6064 states and 7029 transitions. [2020-10-26 20:37:54,362 INFO L78 Accepts]: Start accepts. Automaton has 6064 states and 7029 transitions. Word has length 274 [2020-10-26 20:37:54,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:37:54,362 INFO L481 AbstractCegarLoop]: Abstraction has 6064 states and 7029 transitions. [2020-10-26 20:37:54,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 20:37:54,362 INFO L276 IsEmpty]: Start isEmpty. Operand 6064 states and 7029 transitions. [2020-10-26 20:37:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-26 20:37:54,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:37:54,382 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:37:54,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 20:37:54,383 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:37:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:37:54,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1013337078, now seen corresponding path program 1 times [2020-10-26 20:37:54,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:37:54,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340400810] [2020-10-26 20:37:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:37:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:54,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:54,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:55,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:56,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:56,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-26 20:37:56,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:37:56,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2266 [2020-10-26 20:37:56,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:37:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-26 20:37:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 20:37:56,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:56,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:37:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:56,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:56,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:56,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:37:56,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:56,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:37:56,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:56,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:56,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:37:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:56,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:56,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:56,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 20:37:56,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:37:56,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:56,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:56,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-26 20:37:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:56,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:56,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:56,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 20:37:56,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:56,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:37:56,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:56,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:56,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:56,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:56,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:56,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 20:37:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:56,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:56,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:37:56,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:56,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:37:56,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:56,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:56,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 20:37:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:56,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:56,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:56,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:37:56,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:56,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:37:56,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:56,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:37:56,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:56,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:37:56,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:56,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-26 20:37:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:57,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:57,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:57,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 20:37:57,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:37:57,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 20:37:57,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:57,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 20:37:57,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 236 proven. 7 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-26 20:37:57,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340400810] [2020-10-26 20:37:57,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:37:57,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:37:57,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528969235] [2020-10-26 20:37:57,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:37:57,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:37:57,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:37:57,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:37:57,175 INFO L87 Difference]: Start difference. First operand 6064 states and 7029 transitions. Second operand 6 states. [2020-10-26 20:37:58,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:37:58,779 INFO L93 Difference]: Finished difference Result 10453 states and 12319 transitions. [2020-10-26 20:37:58,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:37:58,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 284 [2020-10-26 20:37:58,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:37:58,781 INFO L225 Difference]: With dead ends: 10453 [2020-10-26 20:37:58,781 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 20:37:58,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:37:58,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 20:37:58,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 20:37:58,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 20:37:58,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 20:37:58,802 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 284 [2020-10-26 20:37:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:37:58,802 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 20:37:58,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:37:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 20:37:58,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 20:37:58,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 20:37:58,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-26 20:38:00,821 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 224 [2020-10-26 20:38:01,204 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 214 [2020-10-26 20:38:01,558 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 40 [2020-10-26 20:38:03,728 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 252 DAG size of output: 73 [2020-10-26 20:38:04,734 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 212 DAG size of output: 61 [2020-10-26 20:38:05,841 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 202 DAG size of output: 61 [2020-10-26 20:38:06,471 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 47 [2020-10-26 20:38:06,476 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-26 20:38:06,476 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-26 20:38:06,476 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-26 20:38:06,476 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-26 20:38:06,476 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-26 20:38:06,477 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= ~a21~0 |old(~a21~0)|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~a8~0 |old(~a8~0)|) (= ~f~0 |old(~f~0)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~a7~0 |old(~a7~0)|) (= ~w~0 |old(~w~0)|) (= ~u~0 |old(~u~0)|) (= ~e~0 |old(~e~0)|) (= ~a16~0 |old(~a16~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~y~0 |old(~y~0)|) (= |#t~string7.base| |old(#t~string7.base)|) (= ~a17~0 |old(~a17~0)|) (= ~c~0 |old(~c~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= ~z~0 |old(~z~0)|) (= ~a12~0 |old(~a12~0)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= ~a~0 |old(~a~0)|) (= ~a20~0 |old(~a20~0)|) (= ~x~0 |old(~x~0)|) (= ~d~0 |old(~d~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~v~0 |old(~v~0)|) (= ~b~0 |old(~b~0)|)) [2020-10-26 20:38:06,477 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-26 20:38:06,477 INFO L274 CegarLoopResult]: For program point L564-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,477 INFO L274 CegarLoopResult]: For program point L531-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,477 INFO L274 CegarLoopResult]: For program point L498-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,478 INFO L274 CegarLoopResult]: For program point L465-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,478 INFO L274 CegarLoopResult]: For program point L432-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,478 INFO L274 CegarLoopResult]: For program point L399-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,478 INFO L274 CegarLoopResult]: For program point L267(lines 267 392) no Hoare annotation was computed. [2020-10-26 20:38:06,478 INFO L274 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-10-26 20:38:06,478 INFO L274 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-10-26 20:38:06,478 INFO L274 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-10-26 20:38:06,479 INFO L274 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-10-26 20:38:06,479 INFO L274 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-10-26 20:38:06,479 INFO L274 CegarLoopResult]: For program point L400(line 400) no Hoare annotation was computed. [2020-10-26 20:38:06,479 INFO L274 CegarLoopResult]: For program point L367(lines 367 392) no Hoare annotation was computed. [2020-10-26 20:38:06,479 INFO L274 CegarLoopResult]: For program point L301(lines 301 392) no Hoare annotation was computed. [2020-10-26 20:38:06,479 INFO L274 CegarLoopResult]: For program point L37(lines 37 392) no Hoare annotation was computed. [2020-10-26 20:38:06,479 INFO L274 CegarLoopResult]: For program point L335(lines 335 392) no Hoare annotation was computed. [2020-10-26 20:38:06,480 INFO L274 CegarLoopResult]: For program point L104(lines 104 392) no Hoare annotation was computed. [2020-10-26 20:38:06,480 INFO L274 CegarLoopResult]: For program point L567-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,480 INFO L274 CegarLoopResult]: For program point L534-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,480 INFO L274 CegarLoopResult]: For program point L501-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,480 INFO L274 CegarLoopResult]: For program point L468-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,481 INFO L274 CegarLoopResult]: For program point L435-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,481 INFO L274 CegarLoopResult]: For program point L402-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,481 INFO L274 CegarLoopResult]: For program point L270(lines 270 392) no Hoare annotation was computed. [2020-10-26 20:38:06,481 INFO L274 CegarLoopResult]: For program point L138(lines 138 392) no Hoare annotation was computed. [2020-10-26 20:38:06,481 INFO L274 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-10-26 20:38:06,481 INFO L274 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-10-26 20:38:06,481 INFO L274 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-10-26 20:38:06,481 INFO L274 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-10-26 20:38:06,481 INFO L274 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-10-26 20:38:06,481 INFO L274 CegarLoopResult]: For program point L403(line 403) no Hoare annotation was computed. [2020-10-26 20:38:06,482 INFO L274 CegarLoopResult]: For program point L205(lines 205 392) no Hoare annotation was computed. [2020-10-26 20:38:06,482 INFO L274 CegarLoopResult]: For program point L74(lines 74 392) no Hoare annotation was computed. [2020-10-26 20:38:06,482 INFO L274 CegarLoopResult]: For program point L570-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,482 INFO L274 CegarLoopResult]: For program point L537-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,482 INFO L274 CegarLoopResult]: For program point L504-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,482 INFO L274 CegarLoopResult]: For program point L471-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,482 INFO L274 CegarLoopResult]: For program point L438-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,482 INFO L274 CegarLoopResult]: For program point L405-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,482 INFO L274 CegarLoopResult]: For program point L339(lines 339 392) no Hoare annotation was computed. [2020-10-26 20:38:06,482 INFO L274 CegarLoopResult]: For program point L240(lines 240 392) no Hoare annotation was computed. [2020-10-26 20:38:06,482 INFO L274 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-10-26 20:38:06,482 INFO L274 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-10-26 20:38:06,483 INFO L274 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-10-26 20:38:06,483 INFO L274 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-10-26 20:38:06,483 INFO L274 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-10-26 20:38:06,483 INFO L274 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-10-26 20:38:06,483 INFO L274 CegarLoopResult]: For program point L175(lines 175 392) no Hoare annotation was computed. [2020-10-26 20:38:06,483 INFO L274 CegarLoopResult]: For program point L142(lines 142 392) no Hoare annotation was computed. [2020-10-26 20:38:06,483 INFO L274 CegarLoopResult]: For program point L374(lines 374 392) no Hoare annotation was computed. [2020-10-26 20:38:06,483 INFO L274 CegarLoopResult]: For program point L308(lines 308 392) no Hoare annotation was computed. [2020-10-26 20:38:06,483 INFO L274 CegarLoopResult]: For program point L275(lines 275 392) no Hoare annotation was computed. [2020-10-26 20:38:06,483 INFO L274 CegarLoopResult]: For program point L110(lines 110 392) no Hoare annotation was computed. [2020-10-26 20:38:06,483 INFO L274 CegarLoopResult]: For program point L573-1(lines 573 575) no Hoare annotation was computed. [2020-10-26 20:38:06,483 INFO L274 CegarLoopResult]: For program point L540-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,484 INFO L274 CegarLoopResult]: For program point L507-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,484 INFO L274 CegarLoopResult]: For program point L474-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,484 INFO L274 CegarLoopResult]: For program point L441-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,484 INFO L274 CegarLoopResult]: For program point L408-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,484 INFO L274 CegarLoopResult]: For program point L210(lines 210 392) no Hoare annotation was computed. [2020-10-26 20:38:06,484 INFO L274 CegarLoopResult]: For program point L45(lines 45 392) no Hoare annotation was computed. [2020-10-26 20:38:06,484 INFO L274 CegarLoopResult]: For program point L574(line 574) no Hoare annotation was computed. [2020-10-26 20:38:06,484 INFO L274 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-10-26 20:38:06,484 INFO L274 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-10-26 20:38:06,484 INFO L274 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-10-26 20:38:06,484 INFO L274 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-10-26 20:38:06,484 INFO L274 CegarLoopResult]: For program point L409(line 409) no Hoare annotation was computed. [2020-10-26 20:38:06,485 INFO L274 CegarLoopResult]: For program point L146(lines 146 392) no Hoare annotation was computed. [2020-10-26 20:38:06,485 INFO L274 CegarLoopResult]: For program point L543-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,485 INFO L274 CegarLoopResult]: For program point L510-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,485 INFO L274 CegarLoopResult]: For program point L477-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,485 INFO L274 CegarLoopResult]: For program point L444-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,485 INFO L274 CegarLoopResult]: For program point L411-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,485 INFO L274 CegarLoopResult]: For program point L180(lines 180 392) no Hoare annotation was computed. [2020-10-26 20:38:06,485 INFO L274 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-10-26 20:38:06,485 INFO L274 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-10-26 20:38:06,485 INFO L274 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-10-26 20:38:06,486 INFO L274 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-10-26 20:38:06,486 INFO L274 CegarLoopResult]: For program point L412(line 412) no Hoare annotation was computed. [2020-10-26 20:38:06,486 INFO L274 CegarLoopResult]: For program point L379(lines 379 392) no Hoare annotation was computed. [2020-10-26 20:38:06,486 INFO L274 CegarLoopResult]: For program point L280(lines 280 392) no Hoare annotation was computed. [2020-10-26 20:38:06,486 INFO L274 CegarLoopResult]: For program point L247(lines 247 392) no Hoare annotation was computed. [2020-10-26 20:38:06,486 INFO L274 CegarLoopResult]: For program point L82(lines 82 392) no Hoare annotation was computed. [2020-10-26 20:38:06,486 INFO L274 CegarLoopResult]: For program point L347(lines 347 392) no Hoare annotation was computed. [2020-10-26 20:38:06,486 INFO L274 CegarLoopResult]: For program point L314(lines 314 392) no Hoare annotation was computed. [2020-10-26 20:38:06,486 INFO L274 CegarLoopResult]: For program point L116(lines 116 392) no Hoare annotation was computed. [2020-10-26 20:38:06,486 INFO L274 CegarLoopResult]: For program point L546-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,486 INFO L274 CegarLoopResult]: For program point L513-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,486 INFO L274 CegarLoopResult]: For program point L480-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,487 INFO L274 CegarLoopResult]: For program point L447-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,487 INFO L274 CegarLoopResult]: For program point L414-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,487 INFO L274 CegarLoopResult]: For program point L216(lines 216 392) no Hoare annotation was computed. [2020-10-26 20:38:06,487 INFO L274 CegarLoopResult]: For program point L150(lines 150 392) no Hoare annotation was computed. [2020-10-26 20:38:06,487 INFO L274 CegarLoopResult]: For program point L51(lines 51 392) no Hoare annotation was computed. [2020-10-26 20:38:06,487 INFO L274 CegarLoopResult]: For program point calculate_outputFINAL(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,487 INFO L274 CegarLoopResult]: For program point calculate_outputEXIT(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,487 INFO L274 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-10-26 20:38:06,487 INFO L274 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-10-26 20:38:06,487 INFO L274 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-10-26 20:38:06,487 INFO L274 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-10-26 20:38:06,487 INFO L274 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-10-26 20:38:06,488 INFO L274 CegarLoopResult]: For program point L86(lines 86 392) no Hoare annotation was computed. [2020-10-26 20:38:06,488 INFO L274 CegarLoopResult]: For program point L549-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,488 INFO L274 CegarLoopResult]: For program point L516-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,488 INFO L274 CegarLoopResult]: For program point L483-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,488 INFO L274 CegarLoopResult]: For program point L450-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,488 INFO L274 CegarLoopResult]: For program point L384(lines 384 392) no Hoare annotation was computed. [2020-10-26 20:38:06,488 INFO L274 CegarLoopResult]: For program point L417-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,488 INFO L274 CegarLoopResult]: For program point L318(lines 318 392) no Hoare annotation was computed. [2020-10-26 20:38:06,488 INFO L274 CegarLoopResult]: For program point L252(lines 252 392) no Hoare annotation was computed. [2020-10-26 20:38:06,488 INFO L274 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-10-26 20:38:06,488 INFO L274 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-10-26 20:38:06,488 INFO L274 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-10-26 20:38:06,488 INFO L274 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-10-26 20:38:06,488 INFO L274 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-10-26 20:38:06,489 INFO L274 CegarLoopResult]: For program point L220(lines 220 392) no Hoare annotation was computed. [2020-10-26 20:38:06,489 INFO L274 CegarLoopResult]: For program point L154(lines 154 392) no Hoare annotation was computed. [2020-10-26 20:38:06,489 INFO L274 CegarLoopResult]: For program point L121(lines 121 392) no Hoare annotation was computed. [2020-10-26 20:38:06,489 INFO L274 CegarLoopResult]: For program point L320(lines 320 392) no Hoare annotation was computed. [2020-10-26 20:38:06,489 INFO L274 CegarLoopResult]: For program point L188(lines 188 392) no Hoare annotation was computed. [2020-10-26 20:38:06,489 INFO L274 CegarLoopResult]: For program point L56(lines 56 392) no Hoare annotation was computed. [2020-10-26 20:38:06,489 INFO L274 CegarLoopResult]: For program point L552-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,489 INFO L274 CegarLoopResult]: For program point L519-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,489 INFO L274 CegarLoopResult]: For program point L486-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,489 INFO L274 CegarLoopResult]: For program point L453-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,490 INFO L274 CegarLoopResult]: For program point L420-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,490 INFO L274 CegarLoopResult]: For program point L288(lines 288 392) no Hoare annotation was computed. [2020-10-26 20:38:06,490 INFO L274 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-10-26 20:38:06,490 INFO L274 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-10-26 20:38:06,490 INFO L274 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-10-26 20:38:06,490 INFO L274 CegarLoopResult]: For program point L454(line 454) no Hoare annotation was computed. [2020-10-26 20:38:06,490 INFO L274 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-10-26 20:38:06,490 INFO L274 CegarLoopResult]: For program point L355(lines 355 392) no Hoare annotation was computed. [2020-10-26 20:38:06,490 INFO L274 CegarLoopResult]: For program point L191(lines 191 392) no Hoare annotation was computed. [2020-10-26 20:38:06,490 INFO L274 CegarLoopResult]: For program point L555-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,490 INFO L274 CegarLoopResult]: For program point L522-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,491 INFO L270 CegarLoopResult]: At program point calculate_outputENTRY(lines 32 577) the Hoare annotation is: (let ((.cse3 (= ~a7~0 |old(~a7~0)|)) (.cse4 (= ~a17~0 |old(~a17~0)|)) (.cse5 (= ~a20~0 |old(~a20~0)|)) (.cse6 (= ~a16~0 |old(~a16~0)|)) (.cse7 (= ~a8~0 |old(~a8~0)|)) (.cse8 (<= ~a21~0 1)) (.cse9 (<= 1 ~a21~0)) (.cse17 (= ~a7~0 0))) (let ((.cse11 (not (<= 15 |old(~a8~0)|))) (.cse14 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse17)) (.cse2 (not (= |old(~a7~0)| 1))) (.cse15 (and .cse3 .cse4 (= ~a21~0 |old(~a21~0)|) .cse5 .cse6 .cse7)) (.cse12 (not (= |old(~a20~0)| 1))) (.cse16 (not (<= 6 |old(~a16~0)|))) (.cse18 (not (= |old(~a17~0)| 1))) (.cse0 (not (<= |old(~a21~0)| 1))) (.cse1 (not (<= 1 |old(~a21~0)|))) (.cse13 (not (= |old(~a7~0)| 0))) (.cse10 (not (<= |old(~a20~0)| 0))) (.cse19 (and .cse4 (= ~a21~0 ~a17~0) .cse5 .cse6 .cse7 .cse17))) (and (or .cse0 .cse1 .cse2 (and .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) .cse10) (or .cse0 .cse11 .cse1 .cse12 .cse13 .cse14) (or .cse2 .cse12 .cse15) (or .cse0 (not (<= |old(~a16~0)| 5)) .cse1 .cse14 .cse13 .cse10) (or .cse2 .cse15 .cse16) (or .cse0 .cse11 .cse1 .cse14 .cse13 .cse10) (or (and .cse4 .cse5 .cse7 .cse8 (= ~a16~0 4) .cse9 .cse17) .cse0 .cse1 .cse12 .cse13 (not (= 4 |old(~a16~0)|))) (or .cse18 .cse2 .cse15 .cse10) (or .cse18 .cse0 .cse1 .cse12 .cse16 .cse19 .cse13) (or .cse18 .cse0 .cse1 .cse13 .cse10 .cse19)))) [2020-10-26 20:38:06,491 INFO L274 CegarLoopResult]: For program point L489-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,491 INFO L274 CegarLoopResult]: For program point L456-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,491 INFO L274 CegarLoopResult]: For program point L423-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,491 INFO L274 CegarLoopResult]: For program point L357(lines 357 392) no Hoare annotation was computed. [2020-10-26 20:38:06,491 INFO L274 CegarLoopResult]: For program point L258(lines 258 392) no Hoare annotation was computed. [2020-10-26 20:38:06,491 INFO L274 CegarLoopResult]: For program point L225(lines 225 392) no Hoare annotation was computed. [2020-10-26 20:38:06,492 INFO L274 CegarLoopResult]: For program point L126(lines 126 392) no Hoare annotation was computed. [2020-10-26 20:38:06,492 INFO L274 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-10-26 20:38:06,492 INFO L274 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-10-26 20:38:06,492 INFO L274 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-10-26 20:38:06,492 INFO L274 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-10-26 20:38:06,492 INFO L274 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-10-26 20:38:06,492 INFO L274 CegarLoopResult]: For program point L94(lines 94 392) no Hoare annotation was computed. [2020-10-26 20:38:06,492 INFO L274 CegarLoopResult]: For program point L326(lines 326 392) no Hoare annotation was computed. [2020-10-26 20:38:06,492 INFO L274 CegarLoopResult]: For program point L558-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,492 INFO L274 CegarLoopResult]: For program point L525-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,492 INFO L274 CegarLoopResult]: For program point L492-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,493 INFO L274 CegarLoopResult]: For program point L459-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,493 INFO L274 CegarLoopResult]: For program point L393(lines 393 395) no Hoare annotation was computed. [2020-10-26 20:38:06,493 INFO L274 CegarLoopResult]: For program point L426-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,493 INFO L274 CegarLoopResult]: For program point L393-2(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,493 INFO L274 CegarLoopResult]: For program point L294(lines 294 392) no Hoare annotation was computed. [2020-10-26 20:38:06,493 INFO L274 CegarLoopResult]: For program point L162(lines 162 392) no Hoare annotation was computed. [2020-10-26 20:38:06,493 INFO L274 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-10-26 20:38:06,493 INFO L274 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-10-26 20:38:06,493 INFO L274 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-10-26 20:38:06,493 INFO L274 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-10-26 20:38:06,493 INFO L274 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-10-26 20:38:06,494 INFO L274 CegarLoopResult]: For program point L394(line 394) no Hoare annotation was computed. [2020-10-26 20:38:06,494 INFO L274 CegarLoopResult]: For program point L196(lines 196 392) no Hoare annotation was computed. [2020-10-26 20:38:06,494 INFO L274 CegarLoopResult]: For program point L64(lines 64 392) no Hoare annotation was computed. [2020-10-26 20:38:06,494 INFO L274 CegarLoopResult]: For program point L263(lines 263 392) no Hoare annotation was computed. [2020-10-26 20:38:06,494 INFO L274 CegarLoopResult]: For program point L131(lines 131 392) no Hoare annotation was computed. [2020-10-26 20:38:06,494 INFO L274 CegarLoopResult]: For program point L561-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,494 INFO L274 CegarLoopResult]: For program point L528-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,494 INFO L274 CegarLoopResult]: For program point L495-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,494 INFO L274 CegarLoopResult]: For program point L462-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,494 INFO L274 CegarLoopResult]: For program point L429-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,494 INFO L274 CegarLoopResult]: For program point L363(lines 363 392) no Hoare annotation was computed. [2020-10-26 20:38:06,495 INFO L274 CegarLoopResult]: For program point L396-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:38:06,495 INFO L274 CegarLoopResult]: For program point L99(lines 99 392) no Hoare annotation was computed. [2020-10-26 20:38:06,495 INFO L274 CegarLoopResult]: For program point L33(lines 33 392) no Hoare annotation was computed. [2020-10-26 20:38:06,495 INFO L274 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-10-26 20:38:06,495 INFO L274 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-10-26 20:38:06,495 INFO L270 CegarLoopResult]: At program point L496(line 496) the Hoare annotation is: (let ((.cse8 (not (<= 15 |old(~a8~0)|))) (.cse6 (not (<= 6 |old(~a16~0)|))) (.cse4 (not (= |old(~a17~0)| 1))) (.cse2 (not (= |old(~a7~0)| 1))) (.cse5 (not (= |old(~a20~0)| 1))) (.cse0 (not (<= |old(~a21~0)| 1))) (.cse1 (not (<= 1 |old(~a21~0)|))) (.cse7 (not (= |old(~a7~0)| 0))) (.cse3 (not (<= |old(~a20~0)| 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse2 .cse3) (or .cse4 .cse0 .cse1 .cse5 .cse6 .cse7) (or .cse0 .cse8 .cse1 .cse5 .cse7) (or .cse0 .cse8 .cse1 .cse7 .cse3) (or .cse2 .cse6) (or .cse0 .cse1 .cse5 .cse7 (not (= 4 |old(~a16~0)|))) (or .cse4 .cse0 .cse1 .cse7 .cse3) (or .cse2 .cse5) (or .cse0 (not (<= |old(~a16~0)| 5)) .cse1 .cse7 .cse3))) [2020-10-26 20:38:06,495 INFO L274 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-10-26 20:38:06,495 INFO L274 CegarLoopResult]: For program point L496-1(line 496) no Hoare annotation was computed. [2020-10-26 20:38:06,495 INFO L274 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-10-26 20:38:06,495 INFO L274 CegarLoopResult]: For program point L397(line 397) no Hoare annotation was computed. [2020-10-26 20:38:06,496 INFO L274 CegarLoopResult]: For program point L331(lines 331 392) no Hoare annotation was computed. [2020-10-26 20:38:06,496 INFO L274 CegarLoopResult]: For program point L199(lines 199 392) no Hoare annotation was computed. [2020-10-26 20:38:06,496 INFO L274 CegarLoopResult]: For program point L67(lines 67 392) no Hoare annotation was computed. [2020-10-26 20:38:06,496 INFO L274 CegarLoopResult]: For program point L365(lines 365 392) no Hoare annotation was computed. [2020-10-26 20:38:06,496 INFO L274 CegarLoopResult]: For program point L233(lines 233 392) no Hoare annotation was computed. [2020-10-26 20:38:06,496 INFO L274 CegarLoopResult]: For program point L167(lines 167 392) no Hoare annotation was computed. [2020-10-26 20:38:06,496 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-26 20:38:06,496 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~a12~0 8) (= ~a8~0 15) (= ~a20~0 1) (<= ~a21~0 1) (<= 1 ~a21~0) (= 5 ~a16~0) (= ~a7~0 0) (= ~a17~0 1)) [2020-10-26 20:38:06,496 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-26 20:38:06,496 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-26 20:38:06,497 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 579 596) the Hoare annotation is: (or (not (= |old(~a17~0)| |old(~a21~0)|)) (not (= |old(~a17~0)| 1)) (not (= |old(~a20~0)| 1)) (and (= ~a21~0 ~a17~0) (= ~a21~0 1) (= ~a20~0 |old(~a20~0)|) (= ~a8~0 15) (= 5 ~a16~0) (= ~a7~0 0)) (not (= 5 |old(~a16~0)|)) (not (= 15 |old(~a8~0)|)) (not (= ~a12~0 8)) (not (= |old(~a7~0)| 0))) [2020-10-26 20:38:06,497 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 579 596) no Hoare annotation was computed. [2020-10-26 20:38:06,497 INFO L270 CegarLoopResult]: At program point L593(line 593) the Hoare annotation is: (let ((.cse7 (<= ~a16~0 5)) (.cse0 (<= 6 ~a16~0)) (.cse5 (= ~a17~0 1)) (.cse6 (= ~a7~0 1)) (.cse9 (<= ~a20~0 0)) (.cse1 (= ~a20~0 1)) (.cse2 (<= ~a21~0 1)) (.cse3 (<= 1 ~a21~0)) (.cse4 (= ~a7~0 0)) (.cse8 (<= 15 ~a8~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 (= ~a20~0 |old(~a20~0)|)) (not (<= |old(~a21~0)| 1)) (and .cse7 .cse1 (= ~a16~0 4) .cse2 .cse3 .cse4) (and .cse2 .cse3 .cse4 .cse8 .cse9) (not (= |old(~a20~0)| 1)) (and .cse7 .cse2 .cse3 .cse4 .cse9) (and .cse0 .cse6) (and .cse6 .cse5 .cse9) (and .cse2 .cse3 .cse4 .cse5 .cse9) (not (= |old(~a17~0)| 1)) (and .cse6 .cse2 .cse3 .cse9) (and .cse1 .cse2 .cse3 .cse4 .cse8) (not (<= 1 |old(~a21~0)|)) (not (= 5 |old(~a16~0)|)) (not (= 15 |old(~a8~0)|)) (not (= |old(~a7~0)| 0)) (not (= ~a12~0 8)))) [2020-10-26 20:38:06,497 INFO L274 CegarLoopResult]: For program point L593-1(line 593) no Hoare annotation was computed. [2020-10-26 20:38:06,497 INFO L274 CegarLoopResult]: For program point L590(line 590) no Hoare annotation was computed. [2020-10-26 20:38:06,497 INFO L270 CegarLoopResult]: At program point L585-2(lines 585 595) the Hoare annotation is: (let ((.cse7 (<= ~a16~0 5)) (.cse0 (<= 6 ~a16~0)) (.cse5 (= ~a17~0 1)) (.cse6 (= ~a7~0 1)) (.cse9 (<= ~a20~0 0)) (.cse1 (= ~a20~0 1)) (.cse2 (<= ~a21~0 1)) (.cse3 (<= 1 ~a21~0)) (.cse4 (= ~a7~0 0)) (.cse8 (<= 15 ~a8~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 (= ~a20~0 |old(~a20~0)|)) (not (<= |old(~a21~0)| 1)) (and .cse7 .cse1 (= ~a16~0 4) .cse2 .cse3 .cse4) (and .cse2 .cse3 .cse4 .cse8 .cse9) (not (= |old(~a20~0)| 1)) (and .cse7 .cse2 .cse3 .cse4 .cse9) (and .cse0 .cse6) (and .cse6 .cse5 .cse9) (and .cse2 .cse3 .cse4 .cse5 .cse9) (not (= |old(~a17~0)| 1)) (and .cse6 .cse2 .cse3 .cse9) (and .cse1 .cse2 .cse3 .cse4 .cse8) (not (<= 1 |old(~a21~0)|)) (not (= 5 |old(~a16~0)|)) (not (= 15 |old(~a8~0)|)) (not (= |old(~a7~0)| 0)) (not (= ~a12~0 8)))) [2020-10-26 20:38:06,498 INFO L274 CegarLoopResult]: For program point L585-3(lines 579 596) no Hoare annotation was computed. [2020-10-26 20:38:06,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:38:06 BoogieIcfgContainer [2020-10-26 20:38:06,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 20:38:06,528 INFO L168 Benchmark]: Toolchain (without parser) took 107673.94 ms. Allocated memory was 151.0 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 103.5 MB in the beginning and 807.7 MB in the end (delta: -704.2 MB). Peak memory consumption was 690.5 MB. Max. memory is 8.0 GB. [2020-10-26 20:38:06,529 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 151.0 MB. Free memory is still 122.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 20:38:06,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 840.18 ms. Allocated memory is still 151.0 MB. Free memory was 102.9 MB in the beginning and 122.9 MB in the end (delta: -20.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2020-10-26 20:38:06,530 INFO L168 Benchmark]: Boogie Preprocessor took 192.42 ms. Allocated memory is still 151.0 MB. Free memory was 122.9 MB in the beginning and 118.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-26 20:38:06,530 INFO L168 Benchmark]: RCFGBuilder took 1516.57 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 118.0 MB in the beginning and 149.7 MB in the end (delta: -31.7 MB). Peak memory consumption was 55.5 MB. Max. memory is 8.0 GB. [2020-10-26 20:38:06,531 INFO L168 Benchmark]: TraceAbstraction took 105102.73 ms. Allocated memory was 181.4 MB in the beginning and 1.2 GB in the end (delta: 982.5 MB). Free memory was 149.2 MB in the beginning and 807.7 MB in the end (delta: -658.5 MB). Peak memory consumption was 705.1 MB. Max. memory is 8.0 GB. [2020-10-26 20:38:06,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 151.0 MB. Free memory is still 122.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 840.18 ms. Allocated memory is still 151.0 MB. Free memory was 102.9 MB in the beginning and 122.9 MB in the end (delta: -20.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 192.42 ms. Allocated memory is still 151.0 MB. Free memory was 122.9 MB in the beginning and 118.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1516.57 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 118.0 MB in the beginning and 149.7 MB in the end (delta: -31.7 MB). Peak memory consumption was 55.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 105102.73 ms. Allocated memory was 181.4 MB in the beginning and 1.2 GB in the end (delta: 982.5 MB). Free memory was 149.2 MB in the beginning and 807.7 MB in the end (delta: -658.5 MB). Peak memory consumption was 705.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: (((((((((((((((((((((6 <= a16 && a20 == 1) && a21 <= 1) && 1 <= a21) && a7 == 0) && a17 == 1) || (a7 == 1 && a20 == \old(a20))) || !(\old(a21) <= 1)) || (((((a16 <= 5 && a20 == 1) && a16 == 4) && a21 <= 1) && 1 <= a21) && a7 == 0)) || ((((a21 <= 1 && 1 <= a21) && a7 == 0) && 15 <= a8) && a20 <= 0)) || !(\old(a20) == 1)) || ((((a16 <= 5 && a21 <= 1) && 1 <= a21) && a7 == 0) && a20 <= 0)) || (6 <= a16 && a7 == 1)) || ((a7 == 1 && a17 == 1) && a20 <= 0)) || ((((a21 <= 1 && 1 <= a21) && a7 == 0) && a17 == 1) && a20 <= 0)) || !(\old(a17) == 1)) || (((a7 == 1 && a21 <= 1) && 1 <= a21) && a20 <= 0)) || ((((a20 == 1 && a21 <= 1) && 1 <= a21) && a7 == 0) && 15 <= a8)) || !(1 <= \old(a21))) || !(5 == \old(a16))) || !(15 == \old(a8))) || !(\old(a7) == 0)) || !(a12 == 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 97.2s, OverallIterations: 18, TraceHistogramMax: 6, AutomataDifference: 37.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 455 SDtfs, 7736 SDslu, 650 SDs, 0 SdLazy, 15322 SolverSat, 2309 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 162 SyntacticMatches, 6 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6340occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 18 MinimizatonAttempts, 3018 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 862 PreInvPairs, 966 NumberOfFragments, 1070 HoareAnnotationTreeSize, 862 FomulaSimplifications, 88302 FormulaSimplificationTreeSizeReduction, 2.5s HoareSimplificationTime, 9 FomulaSimplificationsInter, 15465 FormulaSimplificationTreeSizeReductionInter, 5.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 55.3s InterpolantComputationTime, 3112 NumberOfCodeBlocks, 3112 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3094 ConstructedInterpolants, 0 QuantifiedInterpolants, 2560906 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 1 PerfectInterpolantSequences, 1593/1783 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...