/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:17:47,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:17:47,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:17:47,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:17:47,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:17:47,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:17:47,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:17:47,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:17:47,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:17:47,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:17:47,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:17:47,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:17:47,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:17:47,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:17:47,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:17:47,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:17:47,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:17:47,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:17:47,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:17:47,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:17:47,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:17:47,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:17:47,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:17:47,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:17:47,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:17:47,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:17:47,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:17:47,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:17:47,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:17:47,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:17:47,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:17:47,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:17:47,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:17:47,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:17:47,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:17:47,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:17:47,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:17:47,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:17:47,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:17:47,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:17:47,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:17:47,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 16:17:47,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:17:47,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:17:47,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:17:47,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:17:47,328 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:17:47,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:17:47,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:17:47,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:17:47,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:17:47,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:17:47,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:17:47,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:17:47,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:17:47,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:17:47,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:17:47,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:17:47,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:17:47,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:17:47,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:17:47,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:17:47,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:17:47,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:17:47,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:17:47,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:17:47,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:17:47,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:17:47,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:17:47,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:17:47,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:17:47,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:17:47,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:17:47,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:17:47,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:17:47,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:17:47,767 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:17:47,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label42.c [2020-10-27 16:17:47,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/833a289d7/a7e3fe04aabe4fa8a4fe7a2df0133f20/FLAG78329337c [2020-10-27 16:17:49,125 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:17:49,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label42.c [2020-10-27 16:17:49,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/833a289d7/a7e3fe04aabe4fa8a4fe7a2df0133f20/FLAG78329337c [2020-10-27 16:17:49,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/833a289d7/a7e3fe04aabe4fa8a4fe7a2df0133f20 [2020-10-27 16:17:49,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:17:49,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:17:49,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:17:49,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:17:49,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:17:49,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:17:49" (1/1) ... [2020-10-27 16:17:49,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42fa9774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:49, skipping insertion in model container [2020-10-27 16:17:49,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:17:49" (1/1) ... [2020-10-27 16:17:49,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:17:49,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:17:51,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:17:51,941 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:17:53,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:17:53,174 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:17:53,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:53 WrapperNode [2020-10-27 16:17:53,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:17:53,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:17:53,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:17:53,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:17:53,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:53" (1/1) ... [2020-10-27 16:17:53,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:53" (1/1) ... [2020-10-27 16:17:53,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:53" (1/1) ... [2020-10-27 16:17:53,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:53" (1/1) ... [2020-10-27 16:17:53,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:53" (1/1) ... [2020-10-27 16:17:53,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:53" (1/1) ... [2020-10-27 16:17:53,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:53" (1/1) ... [2020-10-27 16:17:54,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:17:54,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:17:54,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:17:54,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:17:54,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:17:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:17:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:17:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:17:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:17:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:17:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:17:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:17:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:17:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 16:17:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-27 16:17:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-27 16:17:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:17:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:17:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:17:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:17:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:17:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:17:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 16:17:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-27 16:17:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-27 16:17:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:17:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:17:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:17:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:17:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:17:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:17:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:17:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:17:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:17:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:17:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:17:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:17:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:18:08,887 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:18:08,887 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:18:08,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:18:08 BoogieIcfgContainer [2020-10-27 16:18:08,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:18:08,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:18:08,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:18:08,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:18:08,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:17:49" (1/3) ... [2020-10-27 16:18:08,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32cd204d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:18:08, skipping insertion in model container [2020-10-27 16:18:08,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:53" (2/3) ... [2020-10-27 16:18:08,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32cd204d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:18:08, skipping insertion in model container [2020-10-27 16:18:08,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:18:08" (3/3) ... [2020-10-27 16:18:08,908 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42.c [2020-10-27 16:18:08,922 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:18:08,929 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:18:08,945 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:18:09,000 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:18:09,001 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:18:09,001 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:18:09,001 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:18:09,001 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:18:09,001 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:18:09,002 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:18:09,002 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:18:09,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-27 16:18:09,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1684 [2020-10-27 16:18:09,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:18:09,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:18:09,237 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:18:09,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:18:09,248 INFO L82 PathProgramCache]: Analyzing trace with hash -2106307775, now seen corresponding path program 1 times [2020-10-27 16:18:09,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:18:09,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173961263] [2020-10-27 16:18:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:18:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:11,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:15,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:15,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1707 [2020-10-27 16:18:15,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:18:15,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5209 [2020-10-27 16:18:15,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:18:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:18:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1698 [2020-10-27 16:18:15,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:18:17,649 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 16:18:17,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:18:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:17,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:17,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:17,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:18:17,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:18:17,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 16:18:17,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:18:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:18:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:18:17,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:18:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:18:21,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173961263] [2020-10-27 16:18:21,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:18:21,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 16:18:21,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560573554] [2020-10-27 16:18:21,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:18:21,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:18:21,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:18:21,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:18:21,115 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-27 16:18:21,296 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 16:18:21,655 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-27 16:19:11,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:19:11,856 INFO L93 Difference]: Finished difference Result 8284 states and 15705 transitions. [2020-10-27 16:19:11,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:19:11,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1683 [2020-10-27 16:19:11,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:19:11,931 INFO L225 Difference]: With dead ends: 8284 [2020-10-27 16:19:11,931 INFO L226 Difference]: Without dead ends: 5990 [2020-10-27 16:19:11,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:19:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2020-10-27 16:19:12,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5834. [2020-10-27 16:19:12,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5834 states. [2020-10-27 16:19:12,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 10150 transitions. [2020-10-27 16:19:12,300 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 10150 transitions. Word has length 1683 [2020-10-27 16:19:12,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:19:12,308 INFO L481 AbstractCegarLoop]: Abstraction has 5834 states and 10150 transitions. [2020-10-27 16:19:12,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:19:12,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 10150 transitions. [2020-10-27 16:19:12,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1717 [2020-10-27 16:19:12,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:19:12,470 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:19:12,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:19:12,471 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:19:12,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:19:12,473 INFO L82 PathProgramCache]: Analyzing trace with hash -956770944, now seen corresponding path program 1 times [2020-10-27 16:19:12,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:19:12,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045635775] [2020-10-27 16:19:12,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:19:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:12,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:12,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:17,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:17,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1744 [2020-10-27 16:19:17,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:19:17,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 16:19:17,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:17,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:19:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 16:19:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 16:19:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 16:19:19,452 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 16:19:19,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:19:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:19,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:19,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:19,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:19:19,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:19:19,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 16:19:19,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:19:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:19:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:19:19,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:19:19,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:19:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:19,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:19,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:19,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 16:19:19,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:19:19,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 16:19:19,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:19,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:19:19,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:19:19,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 16:19:19,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:19:19,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 16:19:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:19,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:19,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:19,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 16:19:19,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:19:19,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 16:19:19,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:19,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:19:19,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:19:19,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 16:19:19,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:19:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:19:20,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045635775] [2020-10-27 16:19:20,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:19:20,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:19:20,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432109328] [2020-10-27 16:19:20,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:19:20,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:19:20,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:19:20,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:19:20,996 INFO L87 Difference]: Start difference. First operand 5834 states and 10150 transitions. Second operand 7 states. [2020-10-27 16:19:21,179 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 16:19:22,909 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-27 16:20:01,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:20:01,475 INFO L93 Difference]: Finished difference Result 17042 states and 30134 transitions. [2020-10-27 16:20:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 16:20:01,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1716 [2020-10-27 16:20:01,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:20:01,542 INFO L225 Difference]: With dead ends: 17042 [2020-10-27 16:20:01,542 INFO L226 Difference]: Without dead ends: 11214 [2020-10-27 16:20:01,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 16:20:01,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11214 states. [2020-10-27 16:20:01,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11214 to 11196. [2020-10-27 16:20:01,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11196 states. [2020-10-27 16:20:01,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11196 states to 11196 states and 18664 transitions. [2020-10-27 16:20:01,875 INFO L78 Accepts]: Start accepts. Automaton has 11196 states and 18664 transitions. Word has length 1716 [2020-10-27 16:20:01,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:20:01,875 INFO L481 AbstractCegarLoop]: Abstraction has 11196 states and 18664 transitions. [2020-10-27 16:20:01,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:20:01,876 INFO L276 IsEmpty]: Start isEmpty. Operand 11196 states and 18664 transitions. [2020-10-27 16:20:01,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1722 [2020-10-27 16:20:01,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:20:01,933 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:20:01,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:20:01,933 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:20:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:20:01,935 INFO L82 PathProgramCache]: Analyzing trace with hash 3523525, now seen corresponding path program 1 times [2020-10-27 16:20:01,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:20:01,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732640606] [2020-10-27 16:20:01,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:20:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:02,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:02,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:03,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:07,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:07,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1747 [2020-10-27 16:20:07,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:20:07,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5155 [2020-10-27 16:20:07,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:20:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 16:20:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:20:07,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:20:07,799 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 16:20:07,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:20:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:07,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:07,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:07,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:20:07,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:07,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:20:07,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:07,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:20:07,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:20:07,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:20:07,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:20:07,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:20:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:07,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:07,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:07,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 16:20:07,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:07,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 16:20:07,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:20:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 16:20:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:20:07,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:20:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:20:09,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732640606] [2020-10-27 16:20:09,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:20:09,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 16:20:09,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912864989] [2020-10-27 16:20:09,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:20:09,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:20:09,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:20:09,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:20:09,388 INFO L87 Difference]: Start difference. First operand 11196 states and 18664 transitions. Second operand 5 states. [2020-10-27 16:20:09,722 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 16:20:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:20:50,574 INFO L93 Difference]: Finished difference Result 29483 states and 49539 transitions. [2020-10-27 16:20:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:20:50,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1721 [2020-10-27 16:20:50,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:20:50,664 INFO L225 Difference]: With dead ends: 29483 [2020-10-27 16:20:50,664 INFO L226 Difference]: Without dead ends: 18293 [2020-10-27 16:20:50,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:20:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18293 states. [2020-10-27 16:20:51,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18293 to 18286. [2020-10-27 16:20:51,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18286 states. [2020-10-27 16:20:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18286 states to 18286 states and 27816 transitions. [2020-10-27 16:20:51,158 INFO L78 Accepts]: Start accepts. Automaton has 18286 states and 27816 transitions. Word has length 1721 [2020-10-27 16:20:51,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:20:51,159 INFO L481 AbstractCegarLoop]: Abstraction has 18286 states and 27816 transitions. [2020-10-27 16:20:51,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:20:51,159 INFO L276 IsEmpty]: Start isEmpty. Operand 18286 states and 27816 transitions. [2020-10-27 16:20:51,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1730 [2020-10-27 16:20:51,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:20:51,233 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:20:51,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:20:51,233 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:20:51,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:20:51,235 INFO L82 PathProgramCache]: Analyzing trace with hash -659412226, now seen corresponding path program 1 times [2020-10-27 16:20:51,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:20:51,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973492837] [2020-10-27 16:20:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:20:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:51,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:56,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:56,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1755 [2020-10-27 16:20:56,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:20:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-27 16:20:56,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 16:20:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 16:20:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1273 [2020-10-27 16:20:56,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:21:00,692 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-27 16:21:00,836 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-27 16:21:00,965 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-27 16:21:01,109 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-27 16:21:01,724 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-10-27 16:21:02,795 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-27 16:21:03,116 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-10-27 16:21:03,532 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 39 [2020-10-27 16:21:03,714 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 16:21:03,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:21:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:03,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:03,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:03,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:21:03,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:21:03,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:21:03,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:21:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:21:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:21:03,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:21:03,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:21:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:03,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:03,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 16:21:03,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:21:03,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 16:21:03,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:03,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:21:03,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:21:03,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 16:21:03,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:21:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:21:27,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973492837] [2020-10-27 16:21:27,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:21:27,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 16:21:27,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650922] [2020-10-27 16:21:27,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 16:21:27,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:21:27,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 16:21:27,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-27 16:21:27,112 INFO L87 Difference]: Start difference. First operand 18286 states and 27816 transitions. Second operand 23 states. [2020-10-27 16:21:29,360 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 16:21:29,728 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 105