/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/Problem12_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:51:22,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:51:22,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:51:22,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:51:22,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:51:22,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:51:22,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:51:22,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:51:22,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:51:22,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:51:22,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:51:22,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:51:22,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:51:22,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:51:22,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:51:22,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:51:22,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:51:22,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:51:22,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:51:22,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:51:22,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:51:22,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:51:22,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:51:22,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:51:22,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:51:22,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:51:22,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:51:22,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:51:22,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:51:22,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:51:22,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:51:22,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:51:22,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:51:22,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:51:22,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:51:22,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:51:22,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:51:22,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:51:22,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:51:22,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:51:22,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:51:22,233 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 17:51:22,281 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:51:22,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:51:22,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:51:22,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:51:22,284 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:51:22,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:51:22,284 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:51:22,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:51:22,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:51:22,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:51:22,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:51:22,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:51:22,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:51:22,286 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:51:22,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:51:22,287 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:51:22,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:51:22,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:51:22,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:51:22,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:51:22,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:51:22,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:51:22,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:51:22,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:51:22,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:51:22,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:51:22,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:51:22,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:51:22,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:51:22,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:51:22,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:51:22,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:51:22,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:51:22,683 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:51:22,684 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:51:22,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54.c [2020-10-27 17:51:22,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5891b4ef5/452c7d9df1df4a58acd9d8a76477d9a5/FLAGbbe06a36a [2020-10-27 17:51:23,816 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:51:23,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label54.c [2020-10-27 17:51:23,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5891b4ef5/452c7d9df1df4a58acd9d8a76477d9a5/FLAGbbe06a36a [2020-10-27 17:51:24,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5891b4ef5/452c7d9df1df4a58acd9d8a76477d9a5 [2020-10-27 17:51:24,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:51:24,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:51:24,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:51:24,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:51:24,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:51:24,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:51:24" (1/1) ... [2020-10-27 17:51:24,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52390a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:24, skipping insertion in model container [2020-10-27 17:51:24,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:51:24" (1/1) ... [2020-10-27 17:51:24,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:51:24,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:51:25,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:51:25,900 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:51:26,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:51:26,713 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:51:26,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:26 WrapperNode [2020-10-27 17:51:26,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:51:26,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:51:26,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:51:26,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:51:26,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:26" (1/1) ... [2020-10-27 17:51:26,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:26" (1/1) ... [2020-10-27 17:51:26,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:26" (1/1) ... [2020-10-27 17:51:26,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:26" (1/1) ... [2020-10-27 17:51:26,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:26" (1/1) ... [2020-10-27 17:51:26,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:26" (1/1) ... [2020-10-27 17:51:27,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:26" (1/1) ... [2020-10-27 17:51:27,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:51:27,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:51:27,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:51:27,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:51:27,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:26" (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 17:51:27,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:51:27,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:51:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:51:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:51:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:51:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:51:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:51:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:51:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:51:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:51:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:51:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:51:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:51:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:51:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:51:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:51:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:51:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:51:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:51:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:51:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:51:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:51:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:51:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:51:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:51:32,149 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:51:32,150 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:51:32,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:51:32 BoogieIcfgContainer [2020-10-27 17:51:32,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:51:32,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:51:32,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:51:32,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:51:32,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:51:24" (1/3) ... [2020-10-27 17:51:32,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10cbc881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:51:32, skipping insertion in model container [2020-10-27 17:51:32,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:26" (2/3) ... [2020-10-27 17:51:32,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10cbc881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:51:32, skipping insertion in model container [2020-10-27 17:51:32,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:51:32" (3/3) ... [2020-10-27 17:51:32,170 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label54.c [2020-10-27 17:51:32,184 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:51:32,191 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:51:32,206 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:51:32,260 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:51:32,260 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:51:32,261 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:51:32,261 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:51:32,261 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:51:32,261 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:51:32,261 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:51:32,262 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:51:32,316 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:51:32,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 17:51:32,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:32,327 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] [2020-10-27 17:51:32,327 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:32,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:32,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1036836092, now seen corresponding path program 1 times [2020-10-27 17:51:32,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:32,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44324961] [2020-10-27 17:51:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:32,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:33,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:33,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 17:51:33,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:33,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-27 17:51:33,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:33,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:51:33,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:51:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 17:51:33,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:51:33,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:33,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:33,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:33,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:33,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:33,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 17:51:33,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:51:33,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:33,397 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 17:51:33,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44324961] [2020-10-27 17:51:33,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:51:33,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 17:51:33,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857144180] [2020-10-27 17:51:33,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:51:33,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:33,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:51:33,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:51:33,424 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-27 17:51:48,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:51:48,306 INFO L93 Difference]: Finished difference Result 3290 states and 6312 transitions. [2020-10-27 17:51:48,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:51:48,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-27 17:51:48,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:51:48,344 INFO L225 Difference]: With dead ends: 3290 [2020-10-27 17:51:48,344 INFO L226 Difference]: Without dead ends: 2347 [2020-10-27 17:51:48,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:51:48,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-27 17:51:48,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2332. [2020-10-27 17:51:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-10-27 17:51:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3488 transitions. [2020-10-27 17:51:48,512 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3488 transitions. Word has length 40 [2020-10-27 17:51:48,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:51:48,512 INFO L481 AbstractCegarLoop]: Abstraction has 2332 states and 3488 transitions. [2020-10-27 17:51:48,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:51:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3488 transitions. [2020-10-27 17:51:48,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 17:51:48,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:48,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:51:48,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:51:48,519 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:48,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1647940978, now seen corresponding path program 1 times [2020-10-27 17:51:48,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:48,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782192626] [2020-10-27 17:51:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:49,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:49,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:50,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 17:51:50,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:51:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1426 [2020-10-27 17:51:50,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 17:51:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 17:51:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:51:50,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:50,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:50,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:50,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:50,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 17:51:50,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:50,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:51:50,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:50,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:50,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:50,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:51:50,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:50,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 17:51:50,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:50,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 17:51:50,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:51:50,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782192626] [2020-10-27 17:51:50,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:50,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:51:50,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230038054] [2020-10-27 17:51:50,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:51:50,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:50,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:51:50,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:51:50,402 INFO L87 Difference]: Start difference. First operand 2332 states and 3488 transitions. Second operand 5 states. [2020-10-27 17:52:01,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:52:01,757 INFO L93 Difference]: Finished difference Result 7011 states and 10590 transitions. [2020-10-27 17:52:01,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:52:01,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-27 17:52:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:52:01,795 INFO L225 Difference]: With dead ends: 7011 [2020-10-27 17:52:01,795 INFO L226 Difference]: Without dead ends: 4685 [2020-10-27 17:52:01,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:52:01,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4685 states. [2020-10-27 17:52:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4685 to 4674. [2020-10-27 17:52:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4674 states. [2020-10-27 17:52:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 6453 transitions. [2020-10-27 17:52:01,948 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 6453 transitions. Word has length 119 [2020-10-27 17:52:01,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:52:01,949 INFO L481 AbstractCegarLoop]: Abstraction has 4674 states and 6453 transitions. [2020-10-27 17:52:01,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:52:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 6453 transitions. [2020-10-27 17:52:01,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 17:52:01,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:52:01,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:52:01,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:52:01,953 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:52:01,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:52:01,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1601555358, now seen corresponding path program 1 times [2020-10-27 17:52:01,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:52:01,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382674018] [2020-10-27 17:52:01,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:52:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:02,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:02,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:03,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:03,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:03,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 17:52:03,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:52:03,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1297 [2020-10-27 17:52:03,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:03,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:52:03,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 17:52:03,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 17:52:03,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:03,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:52:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:03,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:03,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:03,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:52:03,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:03,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:52:03,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:03,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:03,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:52:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:03,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:03,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:03,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 17:52:03,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:03,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 17:52:03,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 17:52:03,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:52:03,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382674018] [2020-10-27 17:52:03,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:52:03,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:52:03,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479515273] [2020-10-27 17:52:03,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:52:03,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:52:03,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:52:03,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:52:03,684 INFO L87 Difference]: Start difference. First operand 4674 states and 6453 transitions. Second operand 5 states. [2020-10-27 17:52:14,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:52:14,972 INFO L93 Difference]: Finished difference Result 11681 states and 16567 transitions. [2020-10-27 17:52:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:52:14,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 17:52:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:52:15,016 INFO L225 Difference]: With dead ends: 11681 [2020-10-27 17:52:15,016 INFO L226 Difference]: Without dead ends: 7013 [2020-10-27 17:52:15,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:52:15,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7013 states. [2020-10-27 17:52:15,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7013 to 6235. [2020-10-27 17:52:15,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6235 states. [2020-10-27 17:52:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6235 states to 6235 states and 8221 transitions. [2020-10-27 17:52:15,240 INFO L78 Accepts]: Start accepts. Automaton has 6235 states and 8221 transitions. Word has length 127 [2020-10-27 17:52:15,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:52:15,241 INFO L481 AbstractCegarLoop]: Abstraction has 6235 states and 8221 transitions. [2020-10-27 17:52:15,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:52:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 6235 states and 8221 transitions. [2020-10-27 17:52:15,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 17:52:15,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:52:15,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:52:15,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:52:15,258 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:52:15,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:52:15,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1501254284, now seen corresponding path program 1 times [2020-10-27 17:52:15,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:52:15,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510450620] [2020-10-27 17:52:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:52:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:15,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:16,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:16,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 17:52:16,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:52:16,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 993 [2020-10-27 17:52:16,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:52:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 17:52:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 17:52:16,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:52:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:16,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:16,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:16,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:52:16,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:52:16,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:52:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:16,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:16,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:16,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 17:52:16,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:16,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 17:52:16,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 17:52:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:16,594 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:52:16,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510450620] [2020-10-27 17:52:16,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:52:16,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:52:16,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081186433] [2020-10-27 17:52:16,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:52:16,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:52:16,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:52:16,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:52:16,602 INFO L87 Difference]: Start difference. First operand 6235 states and 8221 transitions. Second operand 5 states. [2020-10-27 17:52:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:52:27,323 INFO L93 Difference]: Finished difference Result 18676 states and 25074 transitions. [2020-10-27 17:52:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:52:27,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-27 17:52:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:52:27,387 INFO L225 Difference]: With dead ends: 18676 [2020-10-27 17:52:27,388 INFO L226 Difference]: Without dead ends: 12447 [2020-10-27 17:52:27,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:52:27,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12447 states. [2020-10-27 17:52:27,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12447 to 12443. [2020-10-27 17:52:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12443 states. [2020-10-27 17:52:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12443 states to 12443 states and 15503 transitions. [2020-10-27 17:52:27,721 INFO L78 Accepts]: Start accepts. Automaton has 12443 states and 15503 transitions. Word has length 128 [2020-10-27 17:52:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:52:27,721 INFO L481 AbstractCegarLoop]: Abstraction has 12443 states and 15503 transitions. [2020-10-27 17:52:27,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:52:27,722 INFO L276 IsEmpty]: Start isEmpty. Operand 12443 states and 15503 transitions. [2020-10-27 17:52:27,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 17:52:27,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:52:27,725 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:52:27,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:52:27,726 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:52:27,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:52:27,726 INFO L82 PathProgramCache]: Analyzing trace with hash 752795622, now seen corresponding path program 1 times [2020-10-27 17:52:27,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:52:27,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166236673] [2020-10-27 17:52:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:52:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:28,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:29,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:31,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:32,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:32,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-27 17:52:32,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:52:32,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4550 [2020-10-27 17:52:32,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:32,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:52:32,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-27 17:52:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 17:52:32,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:32,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:52:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:32,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:32,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:32,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:52:32,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:32,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:52:32,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:32,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:32,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:32,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:52:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:32,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:32,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:32,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:52:32,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 17:52:32,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:32,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 17:52:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:32,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:32,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 17:52:32,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 17:52:32,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:32,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:32,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 17:52:32,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:52:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-27 17:52:32,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166236673] [2020-10-27 17:52:32,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:52:32,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:52:32,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032158577] [2020-10-27 17:52:32,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:52:32,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:52:32,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:52:32,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:52:32,771 INFO L87 Difference]: Start difference. First operand 12443 states and 15503 transitions. Second operand 5 states. [2020-10-27 17:52:44,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:52:44,415 INFO L93 Difference]: Finished difference Result 31093 states and 39898 transitions. [2020-10-27 17:52:44,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:52:44,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-27 17:52:44,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:52:44,478 INFO L225 Difference]: With dead ends: 31093 [2020-10-27 17:52:44,478 INFO L226 Difference]: Without dead ends: 18656 [2020-10-27 17:52:44,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:52:44,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18656 states. [2020-10-27 17:52:45,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18656 to 18649. [2020-10-27 17:52:45,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18649 states. [2020-10-27 17:52:45,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18649 states to 18649 states and 23003 transitions. [2020-10-27 17:52:45,137 INFO L78 Accepts]: Start accepts. Automaton has 18649 states and 23003 transitions. Word has length 189 [2020-10-27 17:52:45,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:52:45,137 INFO L481 AbstractCegarLoop]: Abstraction has 18649 states and 23003 transitions. [2020-10-27 17:52:45,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:52:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand 18649 states and 23003 transitions. [2020-10-27 17:52:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-27 17:52:45,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:52:45,142 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:52:45,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:52:45,143 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:52:45,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:52:45,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1115732422, now seen corresponding path program 1 times [2020-10-27 17:52:45,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:52:45,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398775884] [2020-10-27 17:52:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:52:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:45,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:46,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:46,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:49,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:49,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:49,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 17:52:49,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:52:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4493 [2020-10-27 17:52:49,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:52:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-27 17:52:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 17:52:49,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:49,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:52:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:49,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:49,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:49,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:52:49,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:49,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:52:49,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:49,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:49,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:52:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:49,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:49,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:52:49,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:49,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 17:52:49,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:49,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:49,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 17:52:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:49,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:49,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:49,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 17:52:49,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:49,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 17:52:49,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:49,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:49,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 17:52:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:52:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 17:52:50,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398775884] [2020-10-27 17:52:50,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:52:50,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:52:50,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901833397] [2020-10-27 17:52:50,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:52:50,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:52:50,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:52:50,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:52:50,151 INFO L87 Difference]: Start difference. First operand 18649 states and 23003 transitions. Second operand 5 states. [2020-10-27 17:53:02,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:53:02,586 INFO L93 Difference]: Finished difference Result 41933 states and 53057 transitions. [2020-10-27 17:53:02,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:53:02,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-27 17:53:02,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:53:02,679 INFO L225 Difference]: With dead ends: 41933 [2020-10-27 17:53:02,679 INFO L226 Difference]: Without dead ends: 27950 [2020-10-27 17:53:02,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:53:02,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27950 states. [2020-10-27 17:53:03,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27950 to 27940. [2020-10-27 17:53:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27940 states. [2020-10-27 17:53:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27940 states to 27940 states and 33950 transitions. [2020-10-27 17:53:03,429 INFO L78 Accepts]: Start accepts. Automaton has 27940 states and 33950 transitions. Word has length 205 [2020-10-27 17:53:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:53:03,430 INFO L481 AbstractCegarLoop]: Abstraction has 27940 states and 33950 transitions. [2020-10-27 17:53:03,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:53:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand 27940 states and 33950 transitions. [2020-10-27 17:53:03,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-27 17:53:03,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:53:03,438 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:53:03,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:53:03,438 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:53:03,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:53:03,439 INFO L82 PathProgramCache]: Analyzing trace with hash 514899906, now seen corresponding path program 1 times [2020-10-27 17:53:03,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:53:03,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364857941] [2020-10-27 17:53:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:53:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:03,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:03,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:03,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:04,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:04,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-27 17:53:04,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:53:04,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1276 [2020-10-27 17:53:04,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:04,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:53:04,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-27 17:53:04,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 17:53:04,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:04,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:53:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:04,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:04,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:04,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:53:04,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:04,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:53:04,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:04,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:53:04,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:04,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:53:04,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:04,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:53:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:04,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:04,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:04,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:53:04,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:04,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 17:53:04,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:53:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:53:04,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:53:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:05,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:05,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 17:53:05,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:05,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 17:53:05,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:53:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 17:53:05,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 17:53:05,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364857941] [2020-10-27 17:53:05,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:53:05,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:53:05,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783999242] [2020-10-27 17:53:05,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:53:05,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:53:05,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:53:05,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:53:05,232 INFO L87 Difference]: Start difference. First operand 27940 states and 33950 transitions. Second operand 5 states. [2020-10-27 17:53:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:53:19,299 INFO L93 Difference]: Finished difference Result 63613 states and 79003 transitions. [2020-10-27 17:53:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:53:19,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2020-10-27 17:53:19,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:53:19,401 INFO L225 Difference]: With dead ends: 63613 [2020-10-27 17:53:19,402 INFO L226 Difference]: Without dead ends: 35679 [2020-10-27 17:53:19,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:53:19,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35679 states. [2020-10-27 17:53:20,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35679 to 35668. [2020-10-27 17:53:20,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35668 states. [2020-10-27 17:53:20,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35668 states to 35668 states and 43044 transitions. [2020-10-27 17:53:20,274 INFO L78 Accepts]: Start accepts. Automaton has 35668 states and 43044 transitions. Word has length 239 [2020-10-27 17:53:20,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:53:20,275 INFO L481 AbstractCegarLoop]: Abstraction has 35668 states and 43044 transitions. [2020-10-27 17:53:20,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:53:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 35668 states and 43044 transitions. [2020-10-27 17:53:20,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-27 17:53:20,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:53:20,288 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:53:20,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:53:20,289 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:53:20,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:53:20,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2094609788, now seen corresponding path program 1 times [2020-10-27 17:53:20,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:53:20,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128350326] [2020-10-27 17:53:20,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:53:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:20,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:22,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:24,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:24,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 17:53:24,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:53:24,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4424 [2020-10-27 17:53:24,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:24,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:53:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 268 [2020-10-27 17:53:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 17:53:24,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:24,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:53:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:24,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:24,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:24,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:53:24,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:24,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:53:24,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:53:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:53:24,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:24,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:53:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:24,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:25,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:25,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 17:53:25,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:25,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 17:53:25,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:53:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:53:25,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:25,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-27 17:53:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:25,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:25,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:25,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 17:53:25,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:25,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 17:53:25,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:53:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:25,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 17:53:25,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-27 17:53:25,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128350326] [2020-10-27 17:53:25,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:53:25,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:53:25,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693924341] [2020-10-27 17:53:25,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:53:25,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:53:25,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:53:25,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:53:25,314 INFO L87 Difference]: Start difference. First operand 35668 states and 43044 transitions. Second operand 5 states. [2020-10-27 17:53:39,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:53:39,302 INFO L93 Difference]: Finished difference Result 73667 states and 91368 transitions. [2020-10-27 17:53:39,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:53:39,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 296 [2020-10-27 17:53:39,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:53:39,435 INFO L225 Difference]: With dead ends: 73667 [2020-10-27 17:53:39,435 INFO L226 Difference]: Without dead ends: 45748 [2020-10-27 17:53:39,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:53:39,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45748 states. [2020-10-27 17:53:40,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45748 to 45737. [2020-10-27 17:53:40,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45737 states. [2020-10-27 17:53:40,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45737 states to 45737 states and 56142 transitions. [2020-10-27 17:53:40,496 INFO L78 Accepts]: Start accepts. Automaton has 45737 states and 56142 transitions. Word has length 296 [2020-10-27 17:53:40,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:53:40,497 INFO L481 AbstractCegarLoop]: Abstraction has 45737 states and 56142 transitions. [2020-10-27 17:53:40,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:53:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 45737 states and 56142 transitions. [2020-10-27 17:53:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-27 17:53:40,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:53:40,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:53:40,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:53:40,521 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:53:40,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:53:40,522 INFO L82 PathProgramCache]: Analyzing trace with hash -783112846, now seen corresponding path program 1 times [2020-10-27 17:53:40,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:53:40,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739607164] [2020-10-27 17:53:40,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:53:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:40,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:40,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:41,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:44,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:44,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:44,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-27 17:53:44,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:53:44,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3973 [2020-10-27 17:53:44,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:44,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:53:44,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 315 [2020-10-27 17:53:44,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 17:53:44,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:44,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:53:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:44,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:44,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:44,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:53:44,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:44,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:53:44,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:53:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:53:44,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:44,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:53:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:44,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:44,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:44,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 17:53:44,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:44,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 17:53:44,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:44,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:53:44,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:44,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:53:44,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:44,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 17:53:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:44,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:45,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:45,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 17:53:45,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:45,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 17:53:45,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:45,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:53:45,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:45,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 17:53:45,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-27 17:53:45,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739607164] [2020-10-27 17:53:45,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:53:45,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:53:45,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832265107] [2020-10-27 17:53:45,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:53:45,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:53:45,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:53:45,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:53:45,207 INFO L87 Difference]: Start difference. First operand 45737 states and 56142 transitions. Second operand 6 states. [2020-10-27 17:54:08,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:54:08,823 INFO L93 Difference]: Finished difference Result 156468 states and 200811 transitions. [2020-10-27 17:54:08,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:54:08,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 343 [2020-10-27 17:54:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:54:09,433 INFO L225 Difference]: With dead ends: 156468 [2020-10-27 17:54:09,433 INFO L226 Difference]: Without dead ends: 110737 [2020-10-27 17:54:09,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:54:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110737 states. [2020-10-27 17:54:12,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110737 to 94630. [2020-10-27 17:54:12,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94630 states. [2020-10-27 17:54:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94630 states to 94630 states and 122729 transitions. [2020-10-27 17:54:12,548 INFO L78 Accepts]: Start accepts. Automaton has 94630 states and 122729 transitions. Word has length 343 [2020-10-27 17:54:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:54:12,549 INFO L481 AbstractCegarLoop]: Abstraction has 94630 states and 122729 transitions. [2020-10-27 17:54:12,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:54:12,550 INFO L276 IsEmpty]: Start isEmpty. Operand 94630 states and 122729 transitions. [2020-10-27 17:54:12,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-27 17:54:12,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:54:12,619 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:54:12,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:54:12,619 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:54:12,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:54:12,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1793252712, now seen corresponding path program 1 times [2020-10-27 17:54:12,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:54:12,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816195740] [2020-10-27 17:54:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:54:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:13,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:13,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:16,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:16,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-27 17:54:16,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:54:16,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3122 [2020-10-27 17:54:16,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:54:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 448 [2020-10-27 17:54:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 17:54:16,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:54:16,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:54:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:16,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:16,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:16,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:54:16,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:54:16,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:54:16,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:54:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:54:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:54:16,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:54:16,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:54:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:16,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:16,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:16,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 17:54:16,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:54:16,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 17:54:16,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:54:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:54:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:54:16,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:54:16,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 17:54:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:16,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:16,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:16,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-27 17:54:16,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:54:16,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-27 17:54:16,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:16,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:54:16,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:54:16,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-27 17:54:16,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:54:16,845 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-27 17:54:16,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816195740] [2020-10-27 17:54:16,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:54:16,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:54:16,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359638432] [2020-10-27 17:54:16,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:54:16,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:54:16,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:54:16,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:54:16,847 INFO L87 Difference]: Start difference. First operand 94630 states and 122729 transitions. Second operand 5 states. [2020-10-27 17:54:34,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:54:34,134 INFO L93 Difference]: Finished difference Result 218611 states and 292251 transitions. [2020-10-27 17:54:34,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:54:34,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 476 [2020-10-27 17:54:34,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:54:34,922 INFO L225 Difference]: With dead ends: 218611 [2020-10-27 17:54:34,922 INFO L226 Difference]: Without dead ends: 125521 [2020-10-27 17:54:34,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:54:35,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125521 states. [2020-10-27 17:54:37,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125521 to 125521. [2020-10-27 17:54:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125521 states. [2020-10-27 17:54:37,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125521 states to 125521 states and 163586 transitions. [2020-10-27 17:54:37,934 INFO L78 Accepts]: Start accepts. Automaton has 125521 states and 163586 transitions. Word has length 476 [2020-10-27 17:54:37,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:54:37,935 INFO L481 AbstractCegarLoop]: Abstraction has 125521 states and 163586 transitions. [2020-10-27 17:54:37,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:54:37,935 INFO L276 IsEmpty]: Start isEmpty. Operand 125521 states and 163586 transitions. [2020-10-27 17:54:38,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-27 17:54:38,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:54:38,015 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:54:38,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 17:54:38,016 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:54:38,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:54:38,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2009789219, now seen corresponding path program 1 times [2020-10-27 17:54:38,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:54:38,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512928706] [2020-10-27 17:54:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:54:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:38,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:39,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:39,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:40,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:43,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:43,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 522 [2020-10-27 17:54:43,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:54:43,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-27 17:54:43,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:54:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 477 [2020-10-27 17:54:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 17:54:43,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:54:43,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:54:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:43,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:43,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:54:43,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:54:43,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:54:43,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:54:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:54:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:54:43,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:54:43,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:54:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:43,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:43,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:43,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 17:54:43,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:54:43,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 17:54:43,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:43,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:54:43,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:54:43,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:54:43,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:54:43,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-27 17:54:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:43,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:44,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:44,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-27 17:54:44,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:54:44,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-27 17:54:44,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:54:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:54:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 352 [2020-10-27 17:54:44,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:54:44,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:54:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:44,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:44,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:44,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 17:54:44,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:54:44,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 17:54:44,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:54:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:54:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 17:54:44,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:54:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 17:54:44,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512928706] [2020-10-27 17:54:44,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:54:44,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:54:44,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644650689] [2020-10-27 17:54:44,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:54:44,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:54:44,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:54:44,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:54:44,810 INFO L87 Difference]: Start difference. First operand 125521 states and 163586 transitions. Second operand 5 states. [2020-10-27 17:54:50,128 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 17:54:57,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:54:57,008 INFO L93 Difference]: Finished difference Result 235583 states and 307432 transitions. [2020-10-27 17:54:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:54:57,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 506 [2020-10-27 17:54:57,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:54:57,035 INFO L225 Difference]: With dead ends: 235583 [2020-10-27 17:54:57,035 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 17:54:57,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:54:57,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 17:54:57,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 17:54:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 17:54:57,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 17:54:57,288 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 506 [2020-10-27 17:54:57,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:54:57,288 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 17:54:57,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:54:57,288 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 17:54:57,288 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 17:54:57,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 17:54:57,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 17:54:57,610 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 71