/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:06:23,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:06:23,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:06:23,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:06:23,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:06:23,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:06:23,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:06:23,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:06:23,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:06:23,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:06:23,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:06:23,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:06:23,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:06:23,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:06:23,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:06:23,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:06:23,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:06:23,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:06:23,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:06:23,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:06:23,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:06:23,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:06:23,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:06:23,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:06:23,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:06:23,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:06:23,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:06:23,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:06:23,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:06:23,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:06:23,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:06:23,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:06:23,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:06:23,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:06:23,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:06:23,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:06:23,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:06:23,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:06:23,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:06:23,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:06:23,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:06:23,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:06:23,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:06:23,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:06:23,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:06:23,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:06:23,330 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:06:23,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:06:23,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:06:23,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:06:23,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:06:23,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:06:23,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:06:23,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:06:23,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:06:23,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:06:23,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:06:23,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:06:23,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:06:23,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:06:23,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:06:23,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:06:23,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:06:23,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:06:23,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:06:23,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:06:23,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:06:23,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:06:23,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:06:23,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:06:23,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:06:23,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:06:23,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:06:23,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:06:23,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:06:23,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:06:23,764 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:06:23,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:06:23,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20deaf146/ef8751dabcbf4f5aa855160ef2f7e85c/FLAG8bdfd9229 [2020-10-27 05:06:24,810 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:06:24,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:06:24,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20deaf146/ef8751dabcbf4f5aa855160ef2f7e85c/FLAG8bdfd9229 [2020-10-27 05:06:24,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20deaf146/ef8751dabcbf4f5aa855160ef2f7e85c [2020-10-27 05:06:24,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:06:24,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:06:24,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:06:24,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:06:24,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:06:24,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:06:24" (1/1) ... [2020-10-27 05:06:24,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cad5941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:24, skipping insertion in model container [2020-10-27 05:06:24,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:06:24" (1/1) ... [2020-10-27 05:06:24,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:06:25,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:06:25,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:06:25,973 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:06:26,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:06:26,250 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:06:26,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:26 WrapperNode [2020-10-27 05:06:26,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:06:26,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:06:26,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:06:26,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:06:26,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:26" (1/1) ... [2020-10-27 05:06:26,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:26" (1/1) ... [2020-10-27 05:06:26,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:26" (1/1) ... [2020-10-27 05:06:26,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:26" (1/1) ... [2020-10-27 05:06:26,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:26" (1/1) ... [2020-10-27 05:06:26,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:26" (1/1) ... [2020-10-27 05:06:26,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:26" (1/1) ... [2020-10-27 05:06:26,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:06:26,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:06:26,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:06:26,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:06:26,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:06:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:06:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:06:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:06:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:06:26,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:06:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:06:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:06:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:06:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:06:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:06:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:06:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:06:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:06:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:06:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:06:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:06:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:06:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:06:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:06:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:06:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:06:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:06:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:06:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:06:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:06:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:06:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:06:26,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:06:26,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:06:29,149 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:06:29,149 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:06:29,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:06:29 BoogieIcfgContainer [2020-10-27 05:06:29,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:06:29,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:06:29,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:06:29,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:06:29,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:06:24" (1/3) ... [2020-10-27 05:06:29,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecabdf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:06:29, skipping insertion in model container [2020-10-27 05:06:29,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:26" (2/3) ... [2020-10-27 05:06:29,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecabdf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:06:29, skipping insertion in model container [2020-10-27 05:06:29,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:06:29" (3/3) ... [2020-10-27 05:06:29,161 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:06:29,175 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:06:29,181 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:06:29,195 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:06:29,231 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:06:29,231 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:06:29,231 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:06:29,231 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:06:29,231 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:06:29,232 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:06:29,232 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:06:29,232 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:06:29,265 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states. [2020-10-27 05:06:29,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 05:06:29,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:29,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:06:29,317 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:29,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:29,331 INFO L82 PathProgramCache]: Analyzing trace with hash -425219858, now seen corresponding path program 1 times [2020-10-27 05:06:29,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:29,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110947212] [2020-10-27 05:06:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:31,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:31,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:31,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:32,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:32,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:35,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:35,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-27 05:06:35,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:06:35,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 05:06:35,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:35,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:06:35,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 05:06:35,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 05:06:35,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:06:36,378 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:06:36,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:36,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:36,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:36,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:36,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:36,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 05:06:36,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:36,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:36,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:36,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:36,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:36,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:06:36,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110947212] [2020-10-27 05:06:36,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:36,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:06:36,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765218455] [2020-10-27 05:06:36,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:06:36,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:36,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:06:36,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:06:36,629 INFO L87 Difference]: Start difference. First operand 745 states. Second operand 4 states. [2020-10-27 05:06:37,957 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 05:06:44,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:44,375 INFO L93 Difference]: Finished difference Result 1122 states and 1998 transitions. [2020-10-27 05:06:44,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:06:44,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2020-10-27 05:06:44,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:44,410 INFO L225 Difference]: With dead ends: 1122 [2020-10-27 05:06:44,410 INFO L226 Difference]: Without dead ends: 916 [2020-10-27 05:06:44,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:44,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-10-27 05:06:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 913. [2020-10-27 05:06:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2020-10-27 05:06:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1585 transitions. [2020-10-27 05:06:44,594 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1585 transitions. Word has length 209 [2020-10-27 05:06:44,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:44,596 INFO L481 AbstractCegarLoop]: Abstraction has 913 states and 1585 transitions. [2020-10-27 05:06:44,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:06:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1585 transitions. [2020-10-27 05:06:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-27 05:06:44,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:44,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:06:44,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:06:44,602 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:44,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:44,603 INFO L82 PathProgramCache]: Analyzing trace with hash 658513969, now seen corresponding path program 1 times [2020-10-27 05:06:44,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:44,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227616832] [2020-10-27 05:06:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:44,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:45,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:45,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:49,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-27 05:06:49,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:06:49,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-27 05:06:49,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 05:06:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 05:06:51,246 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:06:51,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:51,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:51,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:51,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:51,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:51,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:06:51,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:51,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:06:51,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227616832] [2020-10-27 05:06:51,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:51,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:51,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866536310] [2020-10-27 05:06:51,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:51,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:51,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:51,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:51,552 INFO L87 Difference]: Start difference. First operand 913 states and 1585 transitions. Second operand 5 states. [2020-10-27 05:07:00,479 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:07:00,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:00,659 INFO L93 Difference]: Finished difference Result 2669 states and 4636 transitions. [2020-10-27 05:07:00,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:07:00,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-27 05:07:00,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:00,674 INFO L225 Difference]: With dead ends: 2669 [2020-10-27 05:07:00,675 INFO L226 Difference]: Without dead ends: 1805 [2020-10-27 05:07:00,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:07:00,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2020-10-27 05:07:00,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1802. [2020-10-27 05:07:00,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1802 states. [2020-10-27 05:07:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 3123 transitions. [2020-10-27 05:07:00,817 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 3123 transitions. Word has length 213 [2020-10-27 05:07:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:00,818 INFO L481 AbstractCegarLoop]: Abstraction has 1802 states and 3123 transitions. [2020-10-27 05:07:00,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:07:00,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 3123 transitions. [2020-10-27 05:07:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-27 05:07:00,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:00,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:07:00,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:07:00,827 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:00,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:00,828 INFO L82 PathProgramCache]: Analyzing trace with hash 515985860, now seen corresponding path program 1 times [2020-10-27 05:07:00,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:00,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674579999] [2020-10-27 05:07:00,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:01,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:01,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:02,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:02,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:05,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:05,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-27 05:07:05,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:07:05,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 05:07:05,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:07:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:07:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 05:07:05,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:07,501 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:07:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:07,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:07,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:07,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:07,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:07,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 05:07:07,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:07,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:07,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:07,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:07,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:07,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674579999] [2020-10-27 05:07:07,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:07,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:07:07,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906054908] [2020-10-27 05:07:07,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:07:07,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:07,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:07:07,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:07,757 INFO L87 Difference]: Start difference. First operand 1802 states and 3123 transitions. Second operand 5 states. [2020-10-27 05:07:16,219 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:07:16,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:16,398 INFO L93 Difference]: Finished difference Result 5100 states and 8810 transitions. [2020-10-27 05:07:16,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:07:16,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-27 05:07:16,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:16,424 INFO L225 Difference]: With dead ends: 5100 [2020-10-27 05:07:16,425 INFO L226 Difference]: Without dead ends: 3501 [2020-10-27 05:07:16,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:07:16,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2020-10-27 05:07:16,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 3498. [2020-10-27 05:07:16,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3498 states. [2020-10-27 05:07:16,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 6038 transitions. [2020-10-27 05:07:16,691 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 6038 transitions. Word has length 213 [2020-10-27 05:07:16,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:16,692 INFO L481 AbstractCegarLoop]: Abstraction has 3498 states and 6038 transitions. [2020-10-27 05:07:16,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:07:16,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 6038 transitions. [2020-10-27 05:07:16,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 05:07:16,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:16,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:07:16,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:07:16,703 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:16,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:16,704 INFO L82 PathProgramCache]: Analyzing trace with hash -2103409943, now seen corresponding path program 1 times [2020-10-27 05:07:16,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:16,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287253034] [2020-10-27 05:07:16,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:17,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:18,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:19,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:19,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:21,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:21,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 05:07:21,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:07:21,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-27 05:07:21,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:07:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:07:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-27 05:07:21,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:23,200 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:07:23,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:23,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:23,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:23,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:23,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:23,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 05:07:23,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:07:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:07:23,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:23,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:23,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287253034] [2020-10-27 05:07:23,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:23,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:07:23,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087167884] [2020-10-27 05:07:23,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:07:23,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:23,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:07:23,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:07:23,447 INFO L87 Difference]: Start difference. First operand 3498 states and 6038 transitions. Second operand 8 states. [2020-10-27 05:07:24,661 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:07:32,417 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 05:07:33,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:33,175 INFO L93 Difference]: Finished difference Result 6746 states and 11519 transitions. [2020-10-27 05:07:33,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:07:33,176 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 214 [2020-10-27 05:07:33,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:33,203 INFO L225 Difference]: With dead ends: 6746 [2020-10-27 05:07:33,204 INFO L226 Difference]: Without dead ends: 5329 [2020-10-27 05:07:33,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:07:33,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5329 states. [2020-10-27 05:07:33,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5329 to 3520. [2020-10-27 05:07:33,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3520 states. [2020-10-27 05:07:33,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 6046 transitions. [2020-10-27 05:07:33,523 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 6046 transitions. Word has length 214 [2020-10-27 05:07:33,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:33,524 INFO L481 AbstractCegarLoop]: Abstraction has 3520 states and 6046 transitions. [2020-10-27 05:07:33,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:07:33,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 6046 transitions. [2020-10-27 05:07:33,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 05:07:33,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:33,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:07:33,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:07:33,535 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:33,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:33,535 INFO L82 PathProgramCache]: Analyzing trace with hash -594362447, now seen corresponding path program 1 times [2020-10-27 05:07:33,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:33,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593043865] [2020-10-27 05:07:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:33,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:34,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:36,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:36,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:37,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:37,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:37,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:38,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:38,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 05:07:38,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:07:38,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 05:07:38,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:38,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:07:38,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:07:38,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-27 05:07:38,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:40,012 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:07:40,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:40,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:40,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:40,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:40,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 05:07:40,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:40,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593043865] [2020-10-27 05:07:40,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:40,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:07:40,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619834543] [2020-10-27 05:07:40,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:07:40,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:40,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:07:40,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:40,330 INFO L87 Difference]: Start difference. First operand 3520 states and 6046 transitions. Second operand 5 states. [2020-10-27 05:07:49,434 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:07:49,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:49,731 INFO L93 Difference]: Finished difference Result 10156 states and 17405 transitions. [2020-10-27 05:07:49,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:07:49,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-27 05:07:49,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:49,763 INFO L225 Difference]: With dead ends: 10156 [2020-10-27 05:07:49,763 INFO L226 Difference]: Without dead ends: 6849 [2020-10-27 05:07:49,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:07:49,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6849 states. [2020-10-27 05:07:50,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6849 to 6846. [2020-10-27 05:07:50,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6846 states. [2020-10-27 05:07:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6846 states to 6846 states and 11707 transitions. [2020-10-27 05:07:50,518 INFO L78 Accepts]: Start accepts. Automaton has 6846 states and 11707 transitions. Word has length 214 [2020-10-27 05:07:50,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:50,519 INFO L481 AbstractCegarLoop]: Abstraction has 6846 states and 11707 transitions. [2020-10-27 05:07:50,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:07:50,522 INFO L276 IsEmpty]: Start isEmpty. Operand 6846 states and 11707 transitions. [2020-10-27 05:07:50,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-27 05:07:50,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:50,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:07:50,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:07:50,541 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:50,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:50,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1202924900, now seen corresponding path program 1 times [2020-10-27 05:07:50,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:50,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521730302] [2020-10-27 05:07:50,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:50,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:51,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:52,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:55,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:55,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 05:07:55,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:07:55,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:07:55,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:07:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:07:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-27 05:07:55,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:56,931 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:07:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:56,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:57,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:57,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:57,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:57,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 05:07:57,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:07:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:07:57,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:57,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521730302] [2020-10-27 05:07:57,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:57,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:07:57,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840193400] [2020-10-27 05:07:57,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:07:57,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:57,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:07:57,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:07:57,170 INFO L87 Difference]: Start difference. First operand 6846 states and 11707 transitions. Second operand 8 states. [2020-10-27 05:07:58,488 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:08:06,127 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 05:08:07,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:07,223 INFO L93 Difference]: Finished difference Result 11156 states and 18925 transitions. [2020-10-27 05:08:07,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:08:07,224 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 215 [2020-10-27 05:08:07,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:07,268 INFO L225 Difference]: With dead ends: 11156 [2020-10-27 05:08:07,268 INFO L226 Difference]: Without dead ends: 10421 [2020-10-27 05:08:07,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:08:07,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10421 states. [2020-10-27 05:08:07,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10421 to 6874. [2020-10-27 05:08:07,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6874 states. [2020-10-27 05:08:07,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6874 states to 6874 states and 11755 transitions. [2020-10-27 05:08:07,896 INFO L78 Accepts]: Start accepts. Automaton has 6874 states and 11755 transitions. Word has length 215 [2020-10-27 05:08:07,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:07,897 INFO L481 AbstractCegarLoop]: Abstraction has 6874 states and 11755 transitions. [2020-10-27 05:08:07,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:08:07,897 INFO L276 IsEmpty]: Start isEmpty. Operand 6874 states and 11755 transitions. [2020-10-27 05:08:07,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-27 05:08:07,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:07,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:07,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:08:07,922 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:07,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:07,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1399682994, now seen corresponding path program 1 times [2020-10-27 05:08:07,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:07,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689162517] [2020-10-27 05:08:07,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:08,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:08,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:08,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:09,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:09,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:09,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:10,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:10,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:12,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:12,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 05:08:12,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:08:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:08:12,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:08:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:08:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 05:08:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:14,192 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:08:14,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:14,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:14,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:14,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:14,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:14,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 05:08:14,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:14,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:14,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689162517] [2020-10-27 05:08:14,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:14,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:14,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993990962] [2020-10-27 05:08:14,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:08:14,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:14,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:08:14,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:14,364 INFO L87 Difference]: Start difference. First operand 6874 states and 11755 transitions. Second operand 5 states. [2020-10-27 05:08:22,894 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:08:23,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:23,254 INFO L93 Difference]: Finished difference Result 19962 states and 34072 transitions. [2020-10-27 05:08:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:08:23,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-27 05:08:23,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:23,292 INFO L225 Difference]: With dead ends: 19962 [2020-10-27 05:08:23,292 INFO L226 Difference]: Without dead ends: 13367 [2020-10-27 05:08:23,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:08:23,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13367 states. [2020-10-27 05:08:24,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13367 to 13364. [2020-10-27 05:08:24,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13364 states. [2020-10-27 05:08:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13364 states to 13364 states and 22704 transitions. [2020-10-27 05:08:24,564 INFO L78 Accepts]: Start accepts. Automaton has 13364 states and 22704 transitions. Word has length 215 [2020-10-27 05:08:24,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:24,565 INFO L481 AbstractCegarLoop]: Abstraction has 13364 states and 22704 transitions. [2020-10-27 05:08:24,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:08:24,565 INFO L276 IsEmpty]: Start isEmpty. Operand 13364 states and 22704 transitions. [2020-10-27 05:08:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-27 05:08:24,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:24,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:24,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:08:24,593 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:24,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:24,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1025545193, now seen corresponding path program 1 times [2020-10-27 05:08:24,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:24,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460123424] [2020-10-27 05:08:24,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:24,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:24,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:26,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:26,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:26,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:26,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:26,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:26,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:29,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:29,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 05:08:29,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:08:29,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:08:29,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:08:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:08:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 05:08:29,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:30,975 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:08:30,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:31,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:31,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:31,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:31,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:08:31,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:31,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:31,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:31,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:31,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:31,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:31,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460123424] [2020-10-27 05:08:31,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:31,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:31,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195837238] [2020-10-27 05:08:31,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:08:31,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:31,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:08:31,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:31,114 INFO L87 Difference]: Start difference. First operand 13364 states and 22704 transitions. Second operand 5 states. [2020-10-27 05:08:40,812 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:08:41,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:41,407 INFO L93 Difference]: Finished difference Result 38963 states and 66108 transitions. [2020-10-27 05:08:41,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:08:41,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-27 05:08:41,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:41,473 INFO L225 Difference]: With dead ends: 38963 [2020-10-27 05:08:41,473 INFO L226 Difference]: Without dead ends: 26502 [2020-10-27 05:08:41,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:08:41,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26502 states. [2020-10-27 05:08:44,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26502 to 26499. [2020-10-27 05:08:44,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26499 states. [2020-10-27 05:08:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26499 states to 26499 states and 44873 transitions. [2020-10-27 05:08:44,086 INFO L78 Accepts]: Start accepts. Automaton has 26499 states and 44873 transitions. Word has length 215 [2020-10-27 05:08:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:44,086 INFO L481 AbstractCegarLoop]: Abstraction has 26499 states and 44873 transitions. [2020-10-27 05:08:44,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:08:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand 26499 states and 44873 transitions. [2020-10-27 05:08:44,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-27 05:08:44,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:44,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:44,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:08:44,134 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:44,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:44,135 INFO L82 PathProgramCache]: Analyzing trace with hash -296384630, now seen corresponding path program 1 times [2020-10-27 05:08:44,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:44,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313278078] [2020-10-27 05:08:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:44,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:44,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:45,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:45,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:45,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:45,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:49,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:49,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 05:08:49,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:08:49,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-27 05:08:49,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:49,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:08:49,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:08:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-27 05:08:49,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:50,556 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:08:50,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:50,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:50,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:50,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:50,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:08:50,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:50,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:50,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313278078] [2020-10-27 05:08:50,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:50,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:50,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969241505] [2020-10-27 05:08:50,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:08:50,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:50,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:08:50,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:50,708 INFO L87 Difference]: Start difference. First operand 26499 states and 44873 transitions. Second operand 5 states. [2020-10-27 05:09:02,274 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:09:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:03,659 INFO L93 Difference]: Finished difference Result 78357 states and 132601 transitions. [2020-10-27 05:09:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:09:03,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-27 05:09:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:03,798 INFO L225 Difference]: With dead ends: 78357 [2020-10-27 05:09:03,799 INFO L226 Difference]: Without dead ends: 52438 [2020-10-27 05:09:03,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:09:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52438 states. [2020-10-27 05:09:09,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52438 to 52435. [2020-10-27 05:09:09,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52435 states. [2020-10-27 05:09:09,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52435 states to 52435 states and 88409 transitions. [2020-10-27 05:09:09,666 INFO L78 Accepts]: Start accepts. Automaton has 52435 states and 88409 transitions. Word has length 216 [2020-10-27 05:09:09,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:09,666 INFO L481 AbstractCegarLoop]: Abstraction has 52435 states and 88409 transitions. [2020-10-27 05:09:09,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:09:09,667 INFO L276 IsEmpty]: Start isEmpty. Operand 52435 states and 88409 transitions. [2020-10-27 05:09:09,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-27 05:09:09,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:09,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:09:09,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:09:09,879 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:09,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:09,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1864490097, now seen corresponding path program 1 times [2020-10-27 05:09:09,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:09,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405849843] [2020-10-27 05:09:09,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:10,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:10,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:11,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:11,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:11,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:12,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:14,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:14,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-27 05:09:14,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:09:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:09:14,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:09:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:09:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-27 05:09:14,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:16,267 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:09:16,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:09:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:16,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:16,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:16,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:09:16,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:09:16,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 05:09:16,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:16,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:09:16,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:09:16,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:09:16,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:16,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:09:16,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405849843] [2020-10-27 05:09:16,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:09:16,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:09:16,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117168991] [2020-10-27 05:09:16,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:09:16,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:09:16,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:09:16,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:09:16,482 INFO L87 Difference]: Start difference. First operand 52435 states and 88409 transitions. Second operand 8 states. [2020-10-27 05:09:17,759 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:09:30,482 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 05:09:35,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:35,124 INFO L93 Difference]: Finished difference Result 82753 states and 138845 transitions. [2020-10-27 05:09:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:09:35,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-27 05:09:35,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:35,237 INFO L225 Difference]: With dead ends: 82753 [2020-10-27 05:09:35,237 INFO L226 Difference]: Without dead ends: 76990 [2020-10-27 05:09:35,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:09:35,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76990 states. [2020-10-27 05:09:40,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76990 to 52435. [2020-10-27 05:09:40,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52435 states. [2020-10-27 05:09:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52435 states to 52435 states and 88377 transitions. [2020-10-27 05:09:41,005 INFO L78 Accepts]: Start accepts. Automaton has 52435 states and 88377 transitions. Word has length 217 [2020-10-27 05:09:41,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:41,005 INFO L481 AbstractCegarLoop]: Abstraction has 52435 states and 88377 transitions. [2020-10-27 05:09:41,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:09:41,005 INFO L276 IsEmpty]: Start isEmpty. Operand 52435 states and 88377 transitions. [2020-10-27 05:09:41,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-27 05:09:41,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:41,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:09:41,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:09:41,065 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:41,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:41,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1892709538, now seen corresponding path program 1 times [2020-10-27 05:09:41,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:41,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204463749] [2020-10-27 05:09:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:41,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:41,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:41,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:42,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:42,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:46,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:46,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-27 05:09:46,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:09:46,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-27 05:09:46,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:46,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:09:46,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-27 05:09:46,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 05:09:46,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:47,374 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:09:47,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:09:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:47,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:47,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:47,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:09:47,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:09:47,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:09:47,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:47,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:09:47,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:09:47,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:09:47,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:47,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:09:47,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204463749] [2020-10-27 05:09:47,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:09:47,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:09:47,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309486748] [2020-10-27 05:09:47,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:09:47,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:09:47,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:09:47,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:09:47,484 INFO L87 Difference]: Start difference. First operand 52435 states and 88377 transitions. Second operand 4 states. [2020-10-27 05:09:48,712 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 05:10:03,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:10:03,020 INFO L93 Difference]: Finished difference Result 93977 states and 157053 transitions. [2020-10-27 05:10:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:10:03,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 217 [2020-10-27 05:10:03,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:10:03,126 INFO L225 Difference]: With dead ends: 93977 [2020-10-27 05:10:03,127 INFO L226 Difference]: Without dead ends: 72534 [2020-10-27 05:10:03,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:10:03,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72534 states.