/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/Problem06_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:32:26,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:32:26,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:32:26,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:32:26,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:32:26,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:32:26,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:32:26,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:32:26,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:32:26,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:32:26,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:32:26,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:32:26,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:32:26,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:32:26,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:32:26,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:32:26,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:32:26,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:32:26,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:32:26,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:32:26,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:32:26,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:32:26,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:32:26,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:32:26,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:32:26,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:32:26,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:32:26,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:32:26,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:32:26,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:32:26,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:32:26,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:32:26,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:32:26,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:32:26,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:32:26,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:32:26,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:32:26,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:32:26,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:32:26,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:32:26,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:32:26,161 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 16:32:26,214 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:32:26,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:32:26,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:32:26,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:32:26,221 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:32:26,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:32:26,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:32:26,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:32:26,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:32:26,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:32:26,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:32:26,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:32:26,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:32:26,225 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:32:26,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:32:26,225 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:32:26,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:32:26,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:32:26,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:32:26,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:32:26,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:32:26,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:32:26,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:32:26,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:32:26,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:32:26,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:32:26,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:32:26,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:32:26,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:32:26,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:32:26,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:32:26,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:32:26,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:32:26,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:32:26,679 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:32:26,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label35.c [2020-10-27 16:32:26,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58ef6ca39/6ecce7faa33d46be904e32be834b92c6/FLAGcfb1fe6e6 [2020-10-27 16:32:27,895 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:32:27,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label35.c [2020-10-27 16:32:27,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58ef6ca39/6ecce7faa33d46be904e32be834b92c6/FLAGcfb1fe6e6 [2020-10-27 16:32:28,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58ef6ca39/6ecce7faa33d46be904e32be834b92c6 [2020-10-27 16:32:28,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:32:28,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:32:28,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:32:28,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:32:28,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:32:28,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:32:28" (1/1) ... [2020-10-27 16:32:28,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5823b1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:28, skipping insertion in model container [2020-10-27 16:32:28,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:32:28" (1/1) ... [2020-10-27 16:32:28,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:32:28,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:32:30,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:32:30,417 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:32:31,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:32:31,707 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:32:31,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:31 WrapperNode [2020-10-27 16:32:31,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:32:31,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:32:31,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:32:31,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:32:31,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:31" (1/1) ... [2020-10-27 16:32:31,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:31" (1/1) ... [2020-10-27 16:32:31,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:31" (1/1) ... [2020-10-27 16:32:31,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:31" (1/1) ... [2020-10-27 16:32:32,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:31" (1/1) ... [2020-10-27 16:32:32,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:31" (1/1) ... [2020-10-27 16:32:32,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:31" (1/1) ... [2020-10-27 16:32:32,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:32:32,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:32:32,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:32:32,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:32:32,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:31" (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 16:32:32,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:32:32,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:32:32,519 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:32:32,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:32:32,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:32:32,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:32:32,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:32:32,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:32:32,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:32:32,522 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:32:32,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:32:32,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:32:32,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:32:32,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:32:32,523 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:32:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:32:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:32:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:32:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:32:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:32:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:32:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:32:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:32:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:32:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:32:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:32:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:32:40,788 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:32:40,788 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:32:40,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:32:40 BoogieIcfgContainer [2020-10-27 16:32:40,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:32:40,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:32:40,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:32:40,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:32:40,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:32:28" (1/3) ... [2020-10-27 16:32:40,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401cd216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:32:40, skipping insertion in model container [2020-10-27 16:32:40,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:31" (2/3) ... [2020-10-27 16:32:40,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401cd216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:32:40, skipping insertion in model container [2020-10-27 16:32:40,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:32:40" (3/3) ... [2020-10-27 16:32:40,802 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label35.c [2020-10-27 16:32:40,815 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:32:40,822 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:32:40,836 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:32:40,873 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:32:40,873 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:32:40,873 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:32:40,873 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:32:40,874 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:32:40,874 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:32:40,874 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:32:40,874 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:32:40,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-27 16:32:40,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2020-10-27 16:32:40,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:32:40,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:40,981 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:32:40,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:32:40,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1298693324, now seen corresponding path program 1 times [2020-10-27 16:32:40,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:32:40,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219340112] [2020-10-27 16:32:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:32:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:42,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:45,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:47,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:32:47,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 997 [2020-10-27 16:32:47,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:32:47,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5196 [2020-10-27 16:32:47,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:32:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 16:32:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:32:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-27 16:32:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 16:32:51,408 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-27 16:32:51,695 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-27 16:32:51,966 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-27 16:32:52,229 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-27 16:32:52,471 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-27 16:32:52,735 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-27 16:32:52,995 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-27 16:32:53,226 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-27 16:32:53,462 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-27 16:32:53,696 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-27 16:32:53,882 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-27 16:32:54,066 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-27 16:32:54,270 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-27 16:32:54,767 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:32:54,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:32:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:54,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:54,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:32:54,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:32:54,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:32:54,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 16:32:54,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:32:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:32:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:32:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:32:54,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:33:08,238 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 16:33:08,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219340112] [2020-10-27 16:33:08,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:33:08,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 16:33:08,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931580358] [2020-10-27 16:33:08,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 16:33:08,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:33:08,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 16:33:08,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-27 16:33:08,280 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 18 states. [2020-10-27 16:33:08,833 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 16:33:09,879 WARN L193 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 197 [2020-10-27 16:33:10,854 WARN L193 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 197 [2020-10-27 16:33:11,932 WARN L193 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2020-10-27 16:33:16,631 WARN L193 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 204 [2020-10-27 16:33:20,788 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 214 DAG size of output: 203 [2020-10-27 16:33:23,899 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-10-27 16:33:24,935 WARN L193 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 200 [2020-10-27 16:33:26,356 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 221 DAG size of output: 199 [2020-10-27 16:33:36,906 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 192 [2020-10-27 16:33:37,909 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 197 [2020-10-27 16:33:41,371 WARN L193 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 196 [2020-10-27 16:33:49,927 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 190 [2020-10-27 16:33:51,015 WARN L193 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 194 [2020-10-27 16:33:54,053 WARN L193 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 192 [2020-10-27 16:34:07,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:34:07,648 INFO L93 Difference]: Finished difference Result 3401 states and 6365 transitions. [2020-10-27 16:34:07,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:34:07,650 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 979 [2020-10-27 16:34:07,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:34:07,694 INFO L225 Difference]: With dead ends: 3401 [2020-10-27 16:34:07,694 INFO L226 Difference]: Without dead ends: 2020 [2020-10-27 16:34:07,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 16:34:07,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-27 16:34:07,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2020-10-27 16:34:07,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-27 16:34:07,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3054 transitions. [2020-10-27 16:34:07,912 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3054 transitions. Word has length 979 [2020-10-27 16:34:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:34:07,916 INFO L481 AbstractCegarLoop]: Abstraction has 2020 states and 3054 transitions. [2020-10-27 16:34:07,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 16:34:07,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3054 transitions. [2020-10-27 16:34:07,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1050 [2020-10-27 16:34:07,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:34:07,974 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:07,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:34:07,975 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:34:07,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:34:07,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1326784309, now seen corresponding path program 1 times [2020-10-27 16:34:07,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:34:07,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517370687] [2020-10-27 16:34:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:34:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:08,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:13,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:13,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1069 [2020-10-27 16:34:13,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:34:13,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 16:34:13,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:13,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:34:13,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:34:13,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 985 [2020-10-27 16:34:13,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:15,054 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:34:15,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:34:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:15,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:15,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:15,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:34:15,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:15,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:34:15,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:34:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:34:15,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:15,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:34:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:15,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:15,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:15,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:34:15,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:15,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 16:34:15,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:34:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:34:15,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:34:16,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517370687] [2020-10-27 16:34:16,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:34:16,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:34:16,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287504458] [2020-10-27 16:34:16,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:34:16,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:34:16,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:34:16,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:34:16,356 INFO L87 Difference]: Start difference. First operand 2020 states and 3054 transitions. Second operand 5 states. [2020-10-27 16:34:16,957 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:34:34,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:34:34,796 INFO L93 Difference]: Finished difference Result 4399 states and 7437 transitions. [2020-10-27 16:34:34,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:34:34,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1049 [2020-10-27 16:34:34,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:34:34,817 INFO L225 Difference]: With dead ends: 4399 [2020-10-27 16:34:34,817 INFO L226 Difference]: Without dead ends: 3139 [2020-10-27 16:34:34,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:34:34,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-10-27 16:34:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3088. [2020-10-27 16:34:34,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3088 states. [2020-10-27 16:34:34,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 4567 transitions. [2020-10-27 16:34:34,917 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 4567 transitions. Word has length 1049 [2020-10-27 16:34:34,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:34:34,919 INFO L481 AbstractCegarLoop]: Abstraction has 3088 states and 4567 transitions. [2020-10-27 16:34:34,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:34:34,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 4567 transitions. [2020-10-27 16:34:34,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2020-10-27 16:34:34,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:34:34,971 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:34,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:34:34,972 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:34:34,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:34:34,973 INFO L82 PathProgramCache]: Analyzing trace with hash -2016778589, now seen corresponding path program 1 times [2020-10-27 16:34:34,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:34:34,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023852294] [2020-10-27 16:34:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:34:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:35,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:35,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:40,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:40,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1080 [2020-10-27 16:34:40,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:34:40,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 16:34:40,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:40,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:34:40,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:34:40,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 16:34:40,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:40,516 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:34:40,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:34:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:40,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:40,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:40,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:34:40,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 16:34:40,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:34:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:34:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:40,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:34:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:40,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:40,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:40,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:34:40,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:40,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 16:34:40,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:40,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:34:40,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:40,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:34:40,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 16:34:40,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:34:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:40,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:40,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:40,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:34:40,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:40,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 16:34:40,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:40,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:34:40,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:34:40,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:34:40,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:34:41,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023852294] [2020-10-27 16:34:41,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:34:41,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:34:41,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462444665] [2020-10-27 16:34:41,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:34:41,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:34:41,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:34:41,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:34:41,576 INFO L87 Difference]: Start difference. First operand 3088 states and 4567 transitions. Second operand 7 states. [2020-10-27 16:34:42,251 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:34:43,445 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:35:15,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:35:15,823 INFO L93 Difference]: Finished difference Result 9822 states and 15808 transitions. [2020-10-27 16:35:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:35:15,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1058 [2020-10-27 16:35:15,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:35:15,868 INFO L225 Difference]: With dead ends: 9822 [2020-10-27 16:35:15,869 INFO L226 Difference]: Without dead ends: 7494 [2020-10-27 16:35:15,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:35:15,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7494 states. [2020-10-27 16:35:16,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7494 to 7452. [2020-10-27 16:35:16,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7452 states. [2020-10-27 16:35:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7452 states to 7452 states and 10433 transitions. [2020-10-27 16:35:16,103 INFO L78 Accepts]: Start accepts. Automaton has 7452 states and 10433 transitions. Word has length 1058 [2020-10-27 16:35:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:35:16,104 INFO L481 AbstractCegarLoop]: Abstraction has 7452 states and 10433 transitions. [2020-10-27 16:35:16,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:35:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 7452 states and 10433 transitions. [2020-10-27 16:35:16,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2020-10-27 16:35:16,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:35:16,140 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:35:16,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:35:16,141 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:35:16,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:35:16,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1322867051, now seen corresponding path program 1 times [2020-10-27 16:35:16,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:35:16,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496711492] [2020-10-27 16:35:16,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:35:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:16,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:21,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:21,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1084 [2020-10-27 16:35:21,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:35:21,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5459 [2020-10-27 16:35:21,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:21,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:35:21,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:35:21,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 16:35:21,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:22,149 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:35:22,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:35:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:22,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:22,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:22,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:35:22,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:35:22,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:35:22,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:22,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:35:22,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:35:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:35:22,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:22,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:35:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:22,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:22,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:22,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:35:22,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:35:22,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 16:35:22,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:35:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:35:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:35:22,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:22,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:35:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:22,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:22,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:22,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 16:35:22,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:35:22,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 16:35:22,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:35:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:35:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 16:35:22,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:35:23,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496711492] [2020-10-27 16:35:23,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:35:23,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:35:23,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364557563] [2020-10-27 16:35:23,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:35:23,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:35:23,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:35:23,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:35:23,295 INFO L87 Difference]: Start difference. First operand 7452 states and 10433 transitions. Second operand 7 states. [2020-10-27 16:35:23,961 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 16:35:25,197 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 16:35:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:35:44,603 INFO L93 Difference]: Finished difference Result 17722 states and 25359 transitions. [2020-10-27 16:35:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:35:44,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1062 [2020-10-27 16:35:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:35:44,658 INFO L225 Difference]: With dead ends: 17722 [2020-10-27 16:35:44,659 INFO L226 Difference]: Without dead ends: 11030 [2020-10-27 16:35:44,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:35:44,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11030 states. [2020-10-27 16:35:44,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11030 to 10934. [2020-10-27 16:35:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10934 states. [2020-10-27 16:35:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10934 states to 10934 states and 14904 transitions. [2020-10-27 16:35:45,034 INFO L78 Accepts]: Start accepts. Automaton has 10934 states and 14904 transitions. Word has length 1062 [2020-10-27 16:35:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:35:45,035 INFO L481 AbstractCegarLoop]: Abstraction has 10934 states and 14904 transitions. [2020-10-27 16:35:45,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:35:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 10934 states and 14904 transitions. [2020-10-27 16:35:45,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2020-10-27 16:35:45,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:35:45,087 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:35:45,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:35:45,087 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:35:45,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:35:45,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1867195962, now seen corresponding path program 1 times [2020-10-27 16:35:45,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:35:45,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518702088] [2020-10-27 16:35:45,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:35:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:45,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:45,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:50,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:50,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1087 [2020-10-27 16:35:50,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:35:50,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5121 [2020-10-27 16:35:50,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:50,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 16:35:50,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:35:50,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 16:35:50,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:50,788 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:35:50,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:35:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:50,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:50,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:50,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:35:50,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:35:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 16:35:50,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:35:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:35:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:35:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:50,941 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:35:50,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:35:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:50,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:51,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:51,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:35:51,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:35:51,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 16:35:51,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:51,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:35:51,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:35:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 16:35:51,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:51,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:35:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:51,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:51,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:35:51,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:35:51,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 16:35:51,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:51,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:35:51,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 16:35:51,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:35:51,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 16:35:53,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518702088] [2020-10-27 16:35:53,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:35:53,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:35:53,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522400811] [2020-10-27 16:35:53,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:35:53,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:35:53,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:35:53,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:35:53,365 INFO L87 Difference]: Start difference. First operand 10934 states and 14904 transitions. Second operand 7 states. [2020-10-27 16:35:53,660 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 16:35:55,109 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 168