/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:14:11,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:14:11,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:14:11,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:14:11,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:14:11,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:14:11,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:14:11,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:14:11,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:14:11,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:14:11,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:14:11,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:14:11,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:14:11,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:14:11,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:14:11,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:14:11,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:14:11,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:14:11,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:14:11,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:14:11,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:14:11,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:14:11,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:14:11,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:14:11,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:14:11,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:14:11,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:14:11,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:14:11,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:14:11,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:14:11,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:14:11,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:14:11,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:14:11,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:14:11,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:14:11,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:14:11,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:14:11,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:14:11,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:14:11,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:14:11,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:14:11,256 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:14:11,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:14:11,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:14:11,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:14:11,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:14:11,327 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:14:11,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:14:11,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:14:11,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:14:11,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:14:11,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:14:11,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:14:11,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:14:11,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:14:11,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:14:11,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:14:11,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:14:11,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:14:11,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:14:11,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:14:11,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:14:11,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:14:11,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:14:11,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:14:11,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:14:11,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:14:11,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:14:11,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:14:11,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:14:11,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:14:11,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:14:11,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:14:11,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:14:11,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:14:11,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:14:11,991 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:14:11,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15.c [2020-10-29 08:14:12,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaaccb3c7/c82c162371ed4fa3bcd1659276a3d236/FLAG761621481 [2020-10-29 08:14:13,176 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:14:13,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label15.c [2020-10-29 08:14:13,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaaccb3c7/c82c162371ed4fa3bcd1659276a3d236/FLAG761621481 [2020-10-29 08:14:13,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaaccb3c7/c82c162371ed4fa3bcd1659276a3d236 [2020-10-29 08:14:13,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:14:13,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:14:13,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:14:13,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:14:13,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:14:13,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:14:13" (1/1) ... [2020-10-29 08:14:13,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5439e076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:13, skipping insertion in model container [2020-10-29 08:14:13,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:14:13" (1/1) ... [2020-10-29 08:14:13,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:14:13,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:14:15,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:14:15,081 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:14:15,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:14:15,652 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:14:15,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:15 WrapperNode [2020-10-29 08:14:15,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:14:15,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:14:15,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:14:15,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:14:15,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:15" (1/1) ... [2020-10-29 08:14:15,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:15" (1/1) ... [2020-10-29 08:14:15,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:15" (1/1) ... [2020-10-29 08:14:15,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:15" (1/1) ... [2020-10-29 08:14:15,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:15" (1/1) ... [2020-10-29 08:14:16,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:15" (1/1) ... [2020-10-29 08:14:16,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:15" (1/1) ... [2020-10-29 08:14:16,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:14:16,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:14:16,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:14:16,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:14:16,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:14:16,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:14:16,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:14:16,218 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:14:16,219 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:14:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:14:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:14:16,220 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:14:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:14:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:14:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:14:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:14:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:14:16,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:14:16,224 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:14:16,224 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:14:16,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:14:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:14:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:14:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:14:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:14:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:14:26,209 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:14:26,212 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:14:26,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:14:26 BoogieIcfgContainer [2020-10-29 08:14:26,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:14:26,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:14:26,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:14:26,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:14:26,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:14:13" (1/3) ... [2020-10-29 08:14:26,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237b06f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:14:26, skipping insertion in model container [2020-10-29 08:14:26,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:15" (2/3) ... [2020-10-29 08:14:26,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237b06f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:14:26, skipping insertion in model container [2020-10-29 08:14:26,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:14:26" (3/3) ... [2020-10-29 08:14:26,231 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label15.c [2020-10-29 08:14:26,245 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:14:26,254 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:14:26,266 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:14:26,300 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:14:26,301 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:14:26,301 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:14:26,301 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:14:26,301 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:14:26,301 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:14:26,301 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:14:26,302 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:14:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:14:26,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 08:14:26,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:26,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:14:26,348 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:26,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:26,362 INFO L82 PathProgramCache]: Analyzing trace with hash -201233381, now seen corresponding path program 1 times [2020-10-29 08:14:26,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:26,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795658345] [2020-10-29 08:14:26,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:27,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:27,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 08:14:27,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:27,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-29 08:14:27,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:27,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:27,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:14:27,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:14:27,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 08:14:27,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:14:27,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:27,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:27,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:27,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:27,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:27,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 08:14:27,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:27,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:14:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:14:27,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795658345] [2020-10-29 08:14:27,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:14:27,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:14:27,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049748410] [2020-10-29 08:14:27,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:14:27,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:27,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:14:27,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:14:27,384 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:14:40,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:14:40,499 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-29 08:14:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:14:40,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-29 08:14:40,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:14:40,544 INFO L225 Difference]: With dead ends: 1697 [2020-10-29 08:14:40,546 INFO L226 Difference]: Without dead ends: 1013 [2020-10-29 08:14:40,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:14:40,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-29 08:14:40,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-29 08:14:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-29 08:14:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-29 08:14:40,716 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 43 [2020-10-29 08:14:40,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:14:40,718 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-29 08:14:40,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:14:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-29 08:14:40,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 08:14:40,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:40,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:14:40,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:14:40,728 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:40,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:40,729 INFO L82 PathProgramCache]: Analyzing trace with hash 628802842, now seen corresponding path program 1 times [2020-10-29 08:14:40,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:40,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306424719] [2020-10-29 08:14:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:40,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:41,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:41,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:42,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:42,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 08:14:42,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:14:42,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2122 [2020-10-29 08:14:42,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:42,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:14:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:14:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:14:42,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:14:43,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:43,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:43,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:43,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:43,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:14:43,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:43,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:14:43,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 08:14:43,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:14:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:43,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:43,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:43,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:14:43,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:14:43,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-29 08:14:43,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:43,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:14:43,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:14:43,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306424719] [2020-10-29 08:14:43,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:14:43,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:14:43,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238675524] [2020-10-29 08:14:43,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:14:43,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:43,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:14:43,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:14:43,720 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 7 states. [2020-10-29 08:15:01,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:01,532 INFO L93 Difference]: Finished difference Result 2944 states and 4561 transitions. [2020-10-29 08:15:01,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:15:01,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-29 08:15:01,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:01,545 INFO L225 Difference]: With dead ends: 2944 [2020-10-29 08:15:01,545 INFO L226 Difference]: Without dead ends: 1947 [2020-10-29 08:15:01,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:15:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2020-10-29 08:15:01,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1930. [2020-10-29 08:15:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-29 08:15:01,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2600 transitions. [2020-10-29 08:15:01,620 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2600 transitions. Word has length 114 [2020-10-29 08:15:01,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:01,621 INFO L481 AbstractCegarLoop]: Abstraction has 1930 states and 2600 transitions. [2020-10-29 08:15:01,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:15:01,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2600 transitions. [2020-10-29 08:15:01,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 08:15:01,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:01,625 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:15:01,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:15:01,626 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:01,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:01,626 INFO L82 PathProgramCache]: Analyzing trace with hash -830505713, now seen corresponding path program 1 times [2020-10-29 08:15:01,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:01,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351315485] [2020-10-29 08:15:01,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:01,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:02,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:02,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:02,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 08:15:02,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:15:02,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1320 [2020-10-29 08:15:02,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:02,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:02,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:15:02,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:15:02,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 08:15:02,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:03,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:03,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:03,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:03,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:03,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:03,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:15:03,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:03,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:03,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:03,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:03,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:15:03,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:03,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:03,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:03,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:03,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:15:03,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:03,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 08:15:03,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:03,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:15:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:15:03,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:03,512 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:15:03,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351315485] [2020-10-29 08:15:03,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:03,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:15:03,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622446457] [2020-10-29 08:15:03,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:15:03,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:03,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:15:03,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:15:03,519 INFO L87 Difference]: Start difference. First operand 1930 states and 2600 transitions. Second operand 8 states. [2020-10-29 08:15:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:28,575 INFO L93 Difference]: Finished difference Result 6194 states and 8791 transitions. [2020-10-29 08:15:28,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 08:15:28,577 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-10-29 08:15:28,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:28,606 INFO L225 Difference]: With dead ends: 6194 [2020-10-29 08:15:28,606 INFO L226 Difference]: Without dead ends: 4270 [2020-10-29 08:15:28,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-29 08:15:28,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2020-10-29 08:15:28,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 4227. [2020-10-29 08:15:28,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4227 states. [2020-10-29 08:15:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 5684 transitions. [2020-10-29 08:15:28,789 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 5684 transitions. Word has length 117 [2020-10-29 08:15:28,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:28,790 INFO L481 AbstractCegarLoop]: Abstraction has 4227 states and 5684 transitions. [2020-10-29 08:15:28,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:15:28,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 5684 transitions. [2020-10-29 08:15:28,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-29 08:15:28,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:28,795 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:15:28,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:15:28,796 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:28,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:28,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1019152766, now seen corresponding path program 1 times [2020-10-29 08:15:28,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:28,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797954569] [2020-10-29 08:15:28,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:28,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:29,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:32,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:33,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:33,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-29 08:15:33,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:15:33,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 08:15:33,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:33,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:33,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:15:33,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:15:33,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 08:15:33,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:34,066 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:15:34,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:34,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:34,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:34,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:34,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:34,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:15:34,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:34,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:15:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:34,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:34,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:34,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:34,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:15:34,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:15:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-29 08:15:34,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:34,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 08:15:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 08:15:34,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 08:15:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:34,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:34,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:34,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:15:34,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 08:15:34,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:34,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:15:34,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:15:34,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797954569] [2020-10-29 08:15:34,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:34,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:15:34,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885895299] [2020-10-29 08:15:34,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:15:34,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:34,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:15:34,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:15:34,760 INFO L87 Difference]: Start difference. First operand 4227 states and 5684 transitions. Second operand 7 states. [2020-10-29 08:15:51,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:51,554 INFO L93 Difference]: Finished difference Result 11320 states and 15855 transitions. [2020-10-29 08:15:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:15:51,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2020-10-29 08:15:51,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:51,597 INFO L225 Difference]: With dead ends: 11320 [2020-10-29 08:15:51,597 INFO L226 Difference]: Without dead ends: 7066 [2020-10-29 08:15:51,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:15:51,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7066 states. [2020-10-29 08:15:51,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7066 to 5652. [2020-10-29 08:15:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5652 states. [2020-10-29 08:15:51,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 7125 transitions. [2020-10-29 08:15:51,859 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 7125 transitions. Word has length 186 [2020-10-29 08:15:51,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:51,860 INFO L481 AbstractCegarLoop]: Abstraction has 5652 states and 7125 transitions. [2020-10-29 08:15:51,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:15:51,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 7125 transitions. [2020-10-29 08:15:51,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-29 08:15:51,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:51,870 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:15:51,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:15:51,871 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:51,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:51,871 INFO L82 PathProgramCache]: Analyzing trace with hash 908309687, now seen corresponding path program 1 times [2020-10-29 08:15:51,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:51,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537810237] [2020-10-29 08:15:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:51,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:52,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:53,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:53,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-29 08:15:53,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:15:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-10-29 08:15:53,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:53,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:15:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:15:53,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:53,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:53,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:53,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:53,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:53,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:15:53,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:53,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:53,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:15:53,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:53,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:53,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:53,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:15:53,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:53,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 08:15:53,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:53,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:15:53,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:15:53,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:15:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:53,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:53,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:53,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:15:53,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:53,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 08:15:53,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:53,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:53,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:53,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:15:53,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:15:53,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537810237] [2020-10-29 08:15:53,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:53,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:15:53,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158774053] [2020-10-29 08:15:53,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:15:53,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:53,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:15:53,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:15:53,755 INFO L87 Difference]: Start difference. First operand 5652 states and 7125 transitions. Second operand 7 states. [2020-10-29 08:15:59,231 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:16:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:16:15,845 INFO L93 Difference]: Finished difference Result 14049 states and 18471 transitions. [2020-10-29 08:16:15,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:16:15,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-10-29 08:16:15,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:16:15,886 INFO L225 Difference]: With dead ends: 14049 [2020-10-29 08:16:15,886 INFO L226 Difference]: Without dead ends: 8403 [2020-10-29 08:16:15,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:16:15,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8403 states. [2020-10-29 08:16:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8403 to 8369. [2020-10-29 08:16:16,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8369 states. [2020-10-29 08:16:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8369 states to 8369 states and 10549 transitions. [2020-10-29 08:16:16,139 INFO L78 Accepts]: Start accepts. Automaton has 8369 states and 10549 transitions. Word has length 199 [2020-10-29 08:16:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:16:16,139 INFO L481 AbstractCegarLoop]: Abstraction has 8369 states and 10549 transitions. [2020-10-29 08:16:16,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:16:16,140 INFO L276 IsEmpty]: Start isEmpty. Operand 8369 states and 10549 transitions. [2020-10-29 08:16:16,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-29 08:16:16,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:16:16,143 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:16:16,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:16:16,144 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:16:16,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:16:16,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1668782547, now seen corresponding path program 1 times [2020-10-29 08:16:16,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:16:16,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160005568] [2020-10-29 08:16:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:16:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:16,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:16,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:16,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:21,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:21,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-29 08:16:21,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:16:21,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 08:16:21,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:21,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:21,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:16:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:16:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 08:16:21,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:21,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:16:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:21,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:21,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:16:21,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:21,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:16:21,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:21,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:21,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:16:21,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:16:21,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:21,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:16:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:21,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:21,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:21,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:16:21,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 08:16:21,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:21,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:16:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:21,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:16:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:21,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:21,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:21,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:21,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:16:21,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:16:21,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-29 08:16:21,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:21,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:21,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:21,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:21,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:16:21,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-29 08:16:21,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160005568] [2020-10-29 08:16:22,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:16:22,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:16:22,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566208571] [2020-10-29 08:16:22,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:16:22,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:16:22,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:16:22,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:16:22,007 INFO L87 Difference]: Start difference. First operand 8369 states and 10549 transitions. Second operand 6 states. [2020-10-29 08:16:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:16:36,614 INFO L93 Difference]: Finished difference Result 16762 states and 21145 transitions. [2020-10-29 08:16:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:16:36,621 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2020-10-29 08:16:36,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:16:36,654 INFO L225 Difference]: With dead ends: 16762 [2020-10-29 08:16:36,655 INFO L226 Difference]: Without dead ends: 8399 [2020-10-29 08:16:36,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:16:36,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8399 states. [2020-10-29 08:16:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8399 to 8369. [2020-10-29 08:16:36,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8369 states. [2020-10-29 08:16:36,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8369 states to 8369 states and 10519 transitions. [2020-10-29 08:16:36,891 INFO L78 Accepts]: Start accepts. Automaton has 8369 states and 10519 transitions. Word has length 216 [2020-10-29 08:16:36,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:16:36,892 INFO L481 AbstractCegarLoop]: Abstraction has 8369 states and 10519 transitions. [2020-10-29 08:16:36,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:16:36,892 INFO L276 IsEmpty]: Start isEmpty. Operand 8369 states and 10519 transitions. [2020-10-29 08:16:36,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-29 08:16:36,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:16:36,899 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:16:36,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:16:36,900 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:16:36,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:16:36,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1209483976, now seen corresponding path program 1 times [2020-10-29 08:16:36,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:16:36,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290856135] [2020-10-29 08:16:36,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:16:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:37,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:38,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:40,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:40,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-29 08:16:40,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:16:40,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3948 [2020-10-29 08:16:40,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:40,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 08:16:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:16:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 294 [2020-10-29 08:16:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:41,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:16:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:41,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:41,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:41,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:16:41,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:16:41,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:41,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:16:41,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:41,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:16:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:41,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:41,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:41,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:16:41,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 08:16:41,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:41,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:41,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:16:41,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:41,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:16:41,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:41,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:16:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:41,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:41,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:41,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:16:41,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:41,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 08:16:41,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:41,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:41,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:16:41,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:41,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:16:41,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:41,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:16:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:41,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:41,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:41,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:16:41,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:41,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 08:16:41,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:41,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:41,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:16:41,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:41,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:16:41,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 143 proven. 109 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 08:16:42,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290856135] [2020-10-29 08:16:42,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:16:42,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:16:42,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805955052] [2020-10-29 08:16:42,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:16:42,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:16:42,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:16:42,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:16:42,088 INFO L87 Difference]: Start difference. First operand 8369 states and 10519 transitions. Second operand 9 states. [2020-10-29 08:17:04,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:17:04,076 INFO L93 Difference]: Finished difference Result 21904 states and 29766 transitions. [2020-10-29 08:17:04,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 08:17:04,079 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 287 [2020-10-29 08:17:04,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:17:04,149 INFO L225 Difference]: With dead ends: 21904 [2020-10-29 08:17:04,149 INFO L226 Difference]: Without dead ends: 13090 [2020-10-29 08:17:04,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-29 08:17:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13090 states. [2020-10-29 08:17:04,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13090 to 10585. [2020-10-29 08:17:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10585 states. [2020-10-29 08:17:04,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10585 states to 10585 states and 12994 transitions. [2020-10-29 08:17:04,680 INFO L78 Accepts]: Start accepts. Automaton has 10585 states and 12994 transitions. Word has length 287 [2020-10-29 08:17:04,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:17:04,681 INFO L481 AbstractCegarLoop]: Abstraction has 10585 states and 12994 transitions. [2020-10-29 08:17:04,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:17:04,681 INFO L276 IsEmpty]: Start isEmpty. Operand 10585 states and 12994 transitions. [2020-10-29 08:17:04,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-29 08:17:04,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:17:04,690 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:17:04,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:17:04,690 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:17:04,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:17:04,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1995668148, now seen corresponding path program 1 times [2020-10-29 08:17:04,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:17:04,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525024148] [2020-10-29 08:17:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:17:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:04,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:04,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:05,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:08,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:08,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:08,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-29 08:17:08,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:17:08,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3882 [2020-10-29 08:17:08,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:08,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:17:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:17:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 08:17:08,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:08,882 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:17:08,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:17:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:08,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:08,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:08,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:17:08,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:08,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:17:08,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:08,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:08,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:17:08,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:08,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:17:08,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:08,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:17:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:08,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:09,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:09,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:17:09,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:09,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 08:17:09,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:09,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:17:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:09,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:17:09,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:17:09,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:17:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:09,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:09,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:09,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:09,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:17:09,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:17:09,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 08:17:09,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:09,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:09,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:17:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:17:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:09,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:17:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:09,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:09,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:09,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:17:09,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:09,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 08:17:09,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:09,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:09,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:17:09,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:09,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:17:09,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 253 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 08:17:09,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525024148] [2020-10-29 08:17:09,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:17:09,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:17:09,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764352259] [2020-10-29 08:17:09,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:17:09,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:17:09,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:17:09,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:17:09,718 INFO L87 Difference]: Start difference. First operand 10585 states and 12994 transitions. Second operand 8 states. [2020-10-29 08:17:09,901 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:17:27,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:17:27,104 INFO L93 Difference]: Finished difference Result 21632 states and 27036 transitions. [2020-10-29 08:17:27,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:17:27,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 293 [2020-10-29 08:17:27,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:17:27,143 INFO L225 Difference]: With dead ends: 21632 [2020-10-29 08:17:27,143 INFO L226 Difference]: Without dead ends: 11488 [2020-10-29 08:17:27,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:17:27,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11488 states. [2020-10-29 08:17:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11488 to 11028. [2020-10-29 08:17:27,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11028 states. [2020-10-29 08:17:27,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11028 states to 11028 states and 13672 transitions. [2020-10-29 08:17:27,420 INFO L78 Accepts]: Start accepts. Automaton has 11028 states and 13672 transitions. Word has length 293 [2020-10-29 08:17:27,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:17:27,421 INFO L481 AbstractCegarLoop]: Abstraction has 11028 states and 13672 transitions. [2020-10-29 08:17:27,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:17:27,421 INFO L276 IsEmpty]: Start isEmpty. Operand 11028 states and 13672 transitions. [2020-10-29 08:17:27,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-29 08:17:27,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:17:27,428 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:17:27,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:17:27,428 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:17:27,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:17:27,429 INFO L82 PathProgramCache]: Analyzing trace with hash 811592139, now seen corresponding path program 1 times [2020-10-29 08:17:27,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:17:27,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367640076] [2020-10-29 08:17:27,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:17:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:27,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:28,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:32,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:32,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-29 08:17:32,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:17:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 08:17:32,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:32,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:17:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:17:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:17:32,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:32,705 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:17:32,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:17:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:32,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:32,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:32,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:17:32,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:32,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:17:32,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:32,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:32,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:17:32,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:32,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:17:32,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:32,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:17:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:32,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:32,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:32,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:17:32,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:32,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 08:17:32,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:32,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:17:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:17:32,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:32,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:17:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:32,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:33,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:33,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:17:33,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:33,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-29 08:17:33,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:33,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:17:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 08:17:33,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:33,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-29 08:17:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:33,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:33,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:33,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:17:33,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:33,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:17:33,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:33,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:17:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:17:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:17:33,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 193 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 08:17:33,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367640076] [2020-10-29 08:17:33,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:17:33,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:17:33,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807109278] [2020-10-29 08:17:33,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:17:33,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:17:33,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:17:33,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:17:33,475 INFO L87 Difference]: Start difference. First operand 11028 states and 13672 transitions. Second operand 7 states. [2020-10-29 08:17:34,364 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:17:41,017 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68