/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.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:57:10,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:57:10,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:57:10,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:57:10,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:57:10,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:57:10,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:57:10,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:57:10,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:57:10,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:57:10,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:57:10,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:57:10,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:57:10,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:57:10,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:57:10,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:57:10,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:57:10,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:57:10,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:57:10,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:57:10,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:57:10,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:57:10,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:57:10,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:57:10,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:57:10,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:57:10,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:57:10,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:57:10,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:57:10,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:57:10,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:57:10,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:57:10,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:57:10,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:57:10,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:57:10,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:57:10,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:57:10,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:57:10,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:57:10,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:57:10,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:57:10,228 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 04:57:10,257 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:57:10,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:57:10,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:57:10,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:57:10,260 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:57:10,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:57:10,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:57:10,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:57:10,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:57:10,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:57:10,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:57:10,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:57:10,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:57:10,262 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:57:10,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:57:10,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:57:10,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:57:10,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:57:10,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:57:10,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:57:10,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:57:10,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:57:10,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:57:10,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:57:10,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:57:10,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:57:10,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:57:10,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:57:10,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:57:10,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:57:10,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:57:10,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:57:10,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:57:10,684 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:57:10,685 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:57:10,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 04:57:10,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c431e0be/f3f5ab65b2dc49248849e4e852796f74/FLAG62d35cd81 [2020-10-27 04:57:11,479 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:57:11,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 04:57:11,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c431e0be/f3f5ab65b2dc49248849e4e852796f74/FLAG62d35cd81 [2020-10-27 04:57:11,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c431e0be/f3f5ab65b2dc49248849e4e852796f74 [2020-10-27 04:57:11,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:57:11,745 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:57:11,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:57:11,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:57:11,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:57:11,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:57:11" (1/1) ... [2020-10-27 04:57:11,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b379f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:11, skipping insertion in model container [2020-10-27 04:57:11,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:57:11" (1/1) ... [2020-10-27 04:57:11,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:57:11,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:57:12,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:57:12,320 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:57:12,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:57:12,611 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:57:12,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:12 WrapperNode [2020-10-27 04:57:12,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:57:12,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:57:12,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:57:12,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:57:12,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:12" (1/1) ... [2020-10-27 04:57:12,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:12" (1/1) ... [2020-10-27 04:57:12,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:12" (1/1) ... [2020-10-27 04:57:12,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:12" (1/1) ... [2020-10-27 04:57:12,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:12" (1/1) ... [2020-10-27 04:57:12,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:12" (1/1) ... [2020-10-27 04:57:12,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:12" (1/1) ... [2020-10-27 04:57:12,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:57:12,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:57:12,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:57:12,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:57:12,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:12" (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 04:57:12,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:57:12,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:57:12,857 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:57:12,857 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:57:12,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:57:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:57:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:57:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:57:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:57:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:57:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:57:12,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:57:12,861 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:57:12,861 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:57:12,861 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:57:12,862 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:57:12,862 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:57:12,862 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:57:12,862 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:57:12,863 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:57:12,863 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:57:12,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:57:12,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:57:12,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:57:12,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:57:12,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:57:12,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:57:12,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:57:14,436 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:57:14,436 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:57:14,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:57:14 BoogieIcfgContainer [2020-10-27 04:57:14,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:57:14,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:57:14,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:57:14,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:57:14,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:57:11" (1/3) ... [2020-10-27 04:57:14,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb6e993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:57:14, skipping insertion in model container [2020-10-27 04:57:14,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:12" (2/3) ... [2020-10-27 04:57:14,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb6e993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:57:14, skipping insertion in model container [2020-10-27 04:57:14,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:57:14" (3/3) ... [2020-10-27 04:57:14,448 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 04:57:14,460 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:57:14,468 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:57:14,482 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:57:14,534 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:57:14,534 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:57:14,534 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:57:14,535 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:57:14,535 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:57:14,535 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:57:14,535 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:57:14,535 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:57:14,576 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states. [2020-10-27 04:57:14,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 04:57:14,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:14,600 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] [2020-10-27 04:57:14,600 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:14,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:14,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1270658696, now seen corresponding path program 1 times [2020-10-27 04:57:14,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:14,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268240343] [2020-10-27 04:57:14,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:15,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:15,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:15,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:16,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:16,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:16,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:16,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:17,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:17,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:19,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:20,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:20,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 04:57:20,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 04:57:20,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:57:20,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:57:20,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:57:20,668 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:57:20,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:20,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:20,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:20,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:20,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:20,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:57:20,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:20,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:20,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:20,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:20,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:20,816 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 04:57:20,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268240343] [2020-10-27 04:57:20,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:20,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:20,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365027289] [2020-10-27 04:57:20,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:20,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:20,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:20,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:20,853 INFO L87 Difference]: Start difference. First operand 321 states. Second operand 5 states. [2020-10-27 04:57:23,897 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:57:24,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:24,824 INFO L93 Difference]: Finished difference Result 899 states and 1587 transitions. [2020-10-27 04:57:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:57:24,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-27 04:57:24,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:24,848 INFO L225 Difference]: With dead ends: 899 [2020-10-27 04:57:24,848 INFO L226 Difference]: Without dead ends: 593 [2020-10-27 04:57:24,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:57:24,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-10-27 04:57:24,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 590. [2020-10-27 04:57:24,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-10-27 04:57:24,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 850 transitions. [2020-10-27 04:57:24,990 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 850 transitions. Word has length 151 [2020-10-27 04:57:24,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:24,991 INFO L481 AbstractCegarLoop]: Abstraction has 590 states and 850 transitions. [2020-10-27 04:57:24,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:24,991 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 850 transitions. [2020-10-27 04:57:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 04:57:24,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:24,998 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] [2020-10-27 04:57:24,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:57:24,999 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:24,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:24,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1848347281, now seen corresponding path program 1 times [2020-10-27 04:57:25,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:25,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867028138] [2020-10-27 04:57:25,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:25,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:25,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:26,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:27,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:27,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:27,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:28,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:30,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:30,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 04:57:30,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 04:57:30,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:57:30,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:30,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:30,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:30,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:57:30,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:30,487 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:57:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:30,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:30,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:30,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:30,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:30,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:57:30,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:30,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:30,587 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 04:57:30,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867028138] [2020-10-27 04:57:30,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:30,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:30,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314629194] [2020-10-27 04:57:30,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:30,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:30,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:30,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:30,596 INFO L87 Difference]: Start difference. First operand 590 states and 850 transitions. Second operand 5 states. [2020-10-27 04:57:32,664 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:57:33,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:33,560 INFO L93 Difference]: Finished difference Result 1691 states and 2425 transitions. [2020-10-27 04:57:33,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:57:33,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-27 04:57:33,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:33,568 INFO L225 Difference]: With dead ends: 1691 [2020-10-27 04:57:33,569 INFO L226 Difference]: Without dead ends: 1128 [2020-10-27 04:57:33,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:57:33,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2020-10-27 04:57:33,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1125. [2020-10-27 04:57:33,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-10-27 04:57:33,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1601 transitions. [2020-10-27 04:57:33,685 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1601 transitions. Word has length 152 [2020-10-27 04:57:33,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:33,685 INFO L481 AbstractCegarLoop]: Abstraction has 1125 states and 1601 transitions. [2020-10-27 04:57:33,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:33,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1601 transitions. [2020-10-27 04:57:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-27 04:57:33,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:33,692 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] [2020-10-27 04:57:33,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:57:33,692 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:33,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:33,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1645095194, now seen corresponding path program 1 times [2020-10-27 04:57:33,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:33,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975346015] [2020-10-27 04:57:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:33,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:34,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:34,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:34,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:34,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:37,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:37,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:38,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:38,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:38,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 04:57:38,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 04:57:38,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:57:38,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 04:57:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:57:39,072 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:57:39,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:39,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:39,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:39,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:39,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:39,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:57:39,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:39,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:39,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:57:39,173 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 04:57:39,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975346015] [2020-10-27 04:57:39,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:39,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:39,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354607877] [2020-10-27 04:57:39,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:39,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:39,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:39,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:39,179 INFO L87 Difference]: Start difference. First operand 1125 states and 1601 transitions. Second operand 5 states. [2020-10-27 04:57:41,100 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:57:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:41,974 INFO L93 Difference]: Finished difference Result 3265 states and 4632 transitions. [2020-10-27 04:57:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:57:41,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-27 04:57:41,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:41,987 INFO L225 Difference]: With dead ends: 3265 [2020-10-27 04:57:41,988 INFO L226 Difference]: Without dead ends: 2161 [2020-10-27 04:57:41,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:57:41,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2020-10-27 04:57:42,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2158. [2020-10-27 04:57:42,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2158 states. [2020-10-27 04:57:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 3033 transitions. [2020-10-27 04:57:42,123 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 3033 transitions. Word has length 153 [2020-10-27 04:57:42,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:42,124 INFO L481 AbstractCegarLoop]: Abstraction has 2158 states and 3033 transitions. [2020-10-27 04:57:42,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 3033 transitions. [2020-10-27 04:57:42,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 04:57:42,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:42,129 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] [2020-10-27 04:57:42,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:57:42,130 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:42,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:42,131 INFO L82 PathProgramCache]: Analyzing trace with hash 188952434, now seen corresponding path program 1 times [2020-10-27 04:57:42,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:42,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72163437] [2020-10-27 04:57:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:42,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:42,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:42,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:42,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:42,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:43,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:43,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:43,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:43,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:44,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:47,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:47,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 04:57:47,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:57:47,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:57:47,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:47,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:47,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:47,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 04:57:47,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:47,602 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:57:47,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:47,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:47,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:47,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:47,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:57:47,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:47,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:47,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:47,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:57:47,749 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 04:57:47,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72163437] [2020-10-27 04:57:47,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:47,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:47,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028288737] [2020-10-27 04:57:47,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:47,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:47,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:47,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:47,753 INFO L87 Difference]: Start difference. First operand 2158 states and 3033 transitions. Second operand 5 states. [2020-10-27 04:57:49,774 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:57:50,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:50,829 INFO L93 Difference]: Finished difference Result 6321 states and 8862 transitions. [2020-10-27 04:57:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:57:50,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-27 04:57:50,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:50,852 INFO L225 Difference]: With dead ends: 6321 [2020-10-27 04:57:50,852 INFO L226 Difference]: Without dead ends: 4181 [2020-10-27 04:57:50,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:57:50,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2020-10-27 04:57:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 4178. [2020-10-27 04:57:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4178 states. [2020-10-27 04:57:51,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 5799 transitions. [2020-10-27 04:57:51,106 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 5799 transitions. Word has length 154 [2020-10-27 04:57:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:51,107 INFO L481 AbstractCegarLoop]: Abstraction has 4178 states and 5799 transitions. [2020-10-27 04:57:51,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:51,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 5799 transitions. [2020-10-27 04:57:51,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 04:57:51,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:51,116 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] [2020-10-27 04:57:51,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:57:51,117 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:51,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:51,118 INFO L82 PathProgramCache]: Analyzing trace with hash 770683717, now seen corresponding path program 1 times [2020-10-27 04:57:51,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:51,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044969464] [2020-10-27 04:57:51,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:51,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:51,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:51,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:51,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:51,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:54,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:54,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:55,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:56,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:56,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 04:57:56,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:57:56,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 04:57:56,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:56,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 04:57:56,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:56,585 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:57:56,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:56,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:56,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:56,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:57:56,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:56,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:56,681 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 04:57:56,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044969464] [2020-10-27 04:57:56,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:56,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:56,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107445153] [2020-10-27 04:57:56,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:56,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:56,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:56,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:56,686 INFO L87 Difference]: Start difference. First operand 4178 states and 5799 transitions. Second operand 5 states. [2020-10-27 04:57:59,061 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:58:00,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:00,205 INFO L93 Difference]: Finished difference Result 11187 states and 15636 transitions. [2020-10-27 04:58:00,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:58:00,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-27 04:58:00,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:00,245 INFO L225 Difference]: With dead ends: 11187 [2020-10-27 04:58:00,245 INFO L226 Difference]: Without dead ends: 8096 [2020-10-27 04:58:00,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:58:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2020-10-27 04:58:00,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 8093. [2020-10-27 04:58:00,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8093 states. [2020-10-27 04:58:00,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8093 states to 8093 states and 11088 transitions. [2020-10-27 04:58:00,754 INFO L78 Accepts]: Start accepts. Automaton has 8093 states and 11088 transitions. Word has length 155 [2020-10-27 04:58:00,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:00,754 INFO L481 AbstractCegarLoop]: Abstraction has 8093 states and 11088 transitions. [2020-10-27 04:58:00,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:00,754 INFO L276 IsEmpty]: Start isEmpty. Operand 8093 states and 11088 transitions. [2020-10-27 04:58:00,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 04:58:00,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:00,769 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] [2020-10-27 04:58:00,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:58:00,770 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:00,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:00,770 INFO L82 PathProgramCache]: Analyzing trace with hash -987117933, now seen corresponding path program 1 times [2020-10-27 04:58:00,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:00,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873116416] [2020-10-27 04:58:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:00,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:00,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:00,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:00,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:01,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:01,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:05,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:05,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 04:58:05,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:58:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:58:05,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:58:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 04:58:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:58:05,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:06,072 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:58:06,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:06,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:06,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:06,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:06,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:06,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:58:06,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:06,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:06,130 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 04:58:06,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873116416] [2020-10-27 04:58:06,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:06,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:58:06,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959570378] [2020-10-27 04:58:06,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:58:06,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:06,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:58:06,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:58:06,133 INFO L87 Difference]: Start difference. First operand 8093 states and 11088 transitions. Second operand 4 states. [2020-10-27 04:58:09,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:09,599 INFO L93 Difference]: Finished difference Result 23763 states and 32632 transitions. [2020-10-27 04:58:09,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 04:58:09,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-27 04:58:09,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:09,670 INFO L225 Difference]: With dead ends: 23763 [2020-10-27 04:58:09,671 INFO L226 Difference]: Without dead ends: 16115 [2020-10-27 04:58:09,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:58:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16115 states. [2020-10-27 04:58:10,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16115 to 8095. [2020-10-27 04:58:10,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8095 states. [2020-10-27 04:58:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8095 states to 8095 states and 11090 transitions. [2020-10-27 04:58:10,392 INFO L78 Accepts]: Start accepts. Automaton has 8095 states and 11090 transitions. Word has length 156 [2020-10-27 04:58:10,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:10,393 INFO L481 AbstractCegarLoop]: Abstraction has 8095 states and 11090 transitions. [2020-10-27 04:58:10,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:58:10,393 INFO L276 IsEmpty]: Start isEmpty. Operand 8095 states and 11090 transitions. [2020-10-27 04:58:10,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 04:58:10,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:10,409 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] [2020-10-27 04:58:10,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:58:10,409 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:10,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:10,410 INFO L82 PathProgramCache]: Analyzing trace with hash -265102533, now seen corresponding path program 1 times [2020-10-27 04:58:10,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:10,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952811144] [2020-10-27 04:58:10,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:10,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:10,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:10,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:10,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:10,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:10,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:10,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:10,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:15,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:15,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 04:58:15,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:58:15,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:58:15,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:58:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:58:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 04:58:15,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:15,862 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:58:15,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:15,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:15,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:15,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:15,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:15,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:58:15,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:15,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:15,950 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 04:58:15,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952811144] [2020-10-27 04:58:15,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:15,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:15,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595416505] [2020-10-27 04:58:15,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:58:15,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:15,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:58:15,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:58:15,952 INFO L87 Difference]: Start difference. First operand 8095 states and 11090 transitions. Second operand 5 states. [2020-10-27 04:58:18,440 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:58:19,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:19,801 INFO L93 Difference]: Finished difference Result 22536 states and 30968 transitions. [2020-10-27 04:58:19,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:58:19,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-27 04:58:19,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:19,835 INFO L225 Difference]: With dead ends: 22536 [2020-10-27 04:58:19,836 INFO L226 Difference]: Without dead ends: 15603 [2020-10-27 04:58:19,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:58:19,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15603 states. [2020-10-27 04:58:21,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15603 to 15600. [2020-10-27 04:58:21,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15600 states. [2020-10-27 04:58:21,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15600 states to 15600 states and 21060 transitions. [2020-10-27 04:58:21,114 INFO L78 Accepts]: Start accepts. Automaton has 15600 states and 21060 transitions. Word has length 157 [2020-10-27 04:58:21,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:21,115 INFO L481 AbstractCegarLoop]: Abstraction has 15600 states and 21060 transitions. [2020-10-27 04:58:21,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:21,115 INFO L276 IsEmpty]: Start isEmpty. Operand 15600 states and 21060 transitions. [2020-10-27 04:58:21,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 04:58:21,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:21,143 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] [2020-10-27 04:58:21,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:58:21,144 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:21,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:21,144 INFO L82 PathProgramCache]: Analyzing trace with hash -237450171, now seen corresponding path program 1 times [2020-10-27 04:58:21,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:21,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236203673] [2020-10-27 04:58:21,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:21,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:21,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:21,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:21,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:21,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:26,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:26,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 04:58:26,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:58:26,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 04:58:26,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:58:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 04:58:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 04:58:26,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:26,591 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:58:26,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:26,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:26,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:26,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:26,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:26,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:58:26,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:26,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:26,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:26,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:26,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:26,658 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 04:58:26,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236203673] [2020-10-27 04:58:26,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:26,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:26,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593250168] [2020-10-27 04:58:26,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:58:26,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:26,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:58:26,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:58:26,661 INFO L87 Difference]: Start difference. First operand 15600 states and 21060 transitions. Second operand 5 states. [2020-10-27 04:58:28,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:28,690 INFO L93 Difference]: Finished difference Result 25563 states and 34451 transitions. [2020-10-27 04:58:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:58:28,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-27 04:58:28,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:28,715 INFO L225 Difference]: With dead ends: 25563 [2020-10-27 04:58:28,716 INFO L226 Difference]: Without dead ends: 10066 [2020-10-27 04:58:28,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:58:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10066 states. [2020-10-27 04:58:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10066 to 10066. [2020-10-27 04:58:29,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10066 states. [2020-10-27 04:58:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10066 states to 10066 states and 13536 transitions. [2020-10-27 04:58:29,624 INFO L78 Accepts]: Start accepts. Automaton has 10066 states and 13536 transitions. Word has length 157 [2020-10-27 04:58:29,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:29,625 INFO L481 AbstractCegarLoop]: Abstraction has 10066 states and 13536 transitions. [2020-10-27 04:58:29,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:29,625 INFO L276 IsEmpty]: Start isEmpty. Operand 10066 states and 13536 transitions. [2020-10-27 04:58:29,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 04:58:29,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:29,643 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] [2020-10-27 04:58:29,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:58:29,643 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:29,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:29,644 INFO L82 PathProgramCache]: Analyzing trace with hash 432565942, now seen corresponding path program 1 times [2020-10-27 04:58:29,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:29,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333171465] [2020-10-27 04:58:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:29,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:29,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:29,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:29,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:29,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:30,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:34,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:34,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 04:58:34,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:58:34,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:58:34,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:58:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:58:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 04:58:34,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:34,990 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:58:34,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:35,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:35,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:35,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:35,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:35,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:58:35,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:35,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:35,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:58:35,052 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 04:58:35,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333171465] [2020-10-27 04:58:35,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:35,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:35,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900637082] [2020-10-27 04:58:35,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:58:35,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:35,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:58:35,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:58:35,055 INFO L87 Difference]: Start difference. First operand 10066 states and 13536 transitions. Second operand 5 states. [2020-10-27 04:58:36,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:36,846 INFO L93 Difference]: Finished difference Result 17938 states and 24161 transitions. [2020-10-27 04:58:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:58:36,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-27 04:58:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:36,864 INFO L225 Difference]: With dead ends: 17938 [2020-10-27 04:58:36,865 INFO L226 Difference]: Without dead ends: 8168 [2020-10-27 04:58:36,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:58:36,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8168 states. [2020-10-27 04:58:37,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8168 to 8168. [2020-10-27 04:58:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8168 states. [2020-10-27 04:58:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8168 states to 8168 states and 10959 transitions. [2020-10-27 04:58:37,663 INFO L78 Accepts]: Start accepts. Automaton has 8168 states and 10959 transitions. Word has length 165 [2020-10-27 04:58:37,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:37,664 INFO L481 AbstractCegarLoop]: Abstraction has 8168 states and 10959 transitions. [2020-10-27 04:58:37,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:37,664 INFO L276 IsEmpty]: Start isEmpty. Operand 8168 states and 10959 transitions. [2020-10-27 04:58:37,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-27 04:58:37,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:37,677 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] [2020-10-27 04:58:37,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:58:37,677 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:37,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:37,678 INFO L82 PathProgramCache]: Analyzing trace with hash 79532058, now seen corresponding path program 1 times [2020-10-27 04:58:37,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:37,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095052958] [2020-10-27 04:58:37,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:37,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:37,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:37,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:37,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:37,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:38,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:38,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:42,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:42,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 04:58:42,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:58:42,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:58:42,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:58:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:58:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 04:58:42,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:43,241 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:58:43,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:43,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:43,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:43,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:43,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:43,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:58:43,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:43,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:58:43,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:43,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:58:43,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:43,319 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 04:58:43,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095052958] [2020-10-27 04:58:43,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:43,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:58:43,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768247612] [2020-10-27 04:58:43,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:58:43,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:43,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:58:43,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:58:43,321 INFO L87 Difference]: Start difference. First operand 8168 states and 10959 transitions. Second operand 11 states. [2020-10-27 04:58:44,041 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 208 [2020-10-27 04:58:48,543 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 206 [2020-10-27 04:58:50,828 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 208 [2020-10-27 04:58:51,517 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 204 [2020-10-27 04:58:52,545 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 206 [2020-10-27 04:58:54,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:54,233 INFO L93 Difference]: Finished difference Result 41978 states and 60507 transitions. [2020-10-27 04:58:54,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 04:58:54,233 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 171 [2020-10-27 04:58:54,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:54,294 INFO L225 Difference]: With dead ends: 41978 [2020-10-27 04:58:54,294 INFO L226 Difference]: Without dead ends: 35972 [2020-10-27 04:58:54,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=365, Invalid=967, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 04:58:54,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35972 states. [2020-10-27 04:58:55,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35972 to 10908. [2020-10-27 04:58:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10908 states. [2020-10-27 04:58:55,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10908 states to 10908 states and 14847 transitions. [2020-10-27 04:58:55,788 INFO L78 Accepts]: Start accepts. Automaton has 10908 states and 14847 transitions. Word has length 171 [2020-10-27 04:58:55,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:55,789 INFO L481 AbstractCegarLoop]: Abstraction has 10908 states and 14847 transitions. [2020-10-27 04:58:55,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:58:55,789 INFO L276 IsEmpty]: Start isEmpty. Operand 10908 states and 14847 transitions. [2020-10-27 04:58:55,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-27 04:58:55,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:55,799 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] [2020-10-27 04:58:55,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:58:55,799 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:55,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:55,800 INFO L82 PathProgramCache]: Analyzing trace with hash -2021674166, now seen corresponding path program 1 times [2020-10-27 04:58:55,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:55,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597586797] [2020-10-27 04:58:55,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:55,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:55,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:55,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:56,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:56,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:56,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:56,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:00,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:00,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 04:59:00,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:59:00,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 04:59:00,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:59:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:59:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:59:00,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:01,171 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:59:01,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:01,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:01,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:01,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:01,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:01,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:59:01,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:59:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:59:01,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:01,234 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 04:59:01,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597586797] [2020-10-27 04:59:01,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:01,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:01,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813513552] [2020-10-27 04:59:01,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:59:01,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:01,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:59:01,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:59:01,236 INFO L87 Difference]: Start difference. First operand 10908 states and 14847 transitions. Second operand 6 states. [2020-10-27 04:59:01,554 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:59:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:03,936 INFO L93 Difference]: Finished difference Result 19771 states and 27345 transitions. [2020-10-27 04:59:03,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:59:03,937 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-27 04:59:03,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:03,948 INFO L225 Difference]: With dead ends: 19771 [2020-10-27 04:59:03,948 INFO L226 Difference]: Without dead ends: 10244 [2020-10-27 04:59:03,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:59:03,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10244 states. [2020-10-27 04:59:04,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10244 to 10180. [2020-10-27 04:59:04,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10180 states. [2020-10-27 04:59:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10180 states to 10180 states and 13799 transitions. [2020-10-27 04:59:04,822 INFO L78 Accepts]: Start accepts. Automaton has 10180 states and 13799 transitions. Word has length 171 [2020-10-27 04:59:04,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:04,822 INFO L481 AbstractCegarLoop]: Abstraction has 10180 states and 13799 transitions. [2020-10-27 04:59:04,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:59:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 10180 states and 13799 transitions. [2020-10-27 04:59:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-27 04:59:04,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:04,832 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] [2020-10-27 04:59:04,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:59:04,832 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:04,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:04,833 INFO L82 PathProgramCache]: Analyzing trace with hash -228717436, now seen corresponding path program 1 times [2020-10-27 04:59:04,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:04,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090965433] [2020-10-27 04:59:04,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:04,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:04,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:05,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:05,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:07,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:09,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:09,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 04:59:09,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:59:09,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 04:59:09,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:59:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-27 04:59:09,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:10,235 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 30 [2020-10-27 04:59:10,548 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:59:10,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:10,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:10,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:10,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:10,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:10,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:59:10,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:10,680 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 04:59:10,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090965433] [2020-10-27 04:59:10,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:10,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:59:10,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216440711] [2020-10-27 04:59:10,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:59:10,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:10,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:59:10,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:59:10,683 INFO L87 Difference]: Start difference. First operand 10180 states and 13799 transitions. Second operand 11 states. [2020-10-27 04:59:11,009 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 04:59:15,640 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:59:15,955 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 04:59:16,269 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 04:59:16,636 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 04:59:16,923 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 04:59:23,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:23,767 INFO L93 Difference]: Finished difference Result 66638 states and 97193 transitions. [2020-10-27 04:59:23,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 04:59:23,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 171 [2020-10-27 04:59:23,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:23,839 INFO L225 Difference]: With dead ends: 66638 [2020-10-27 04:59:23,839 INFO L226 Difference]: Without dead ends: 61863 [2020-10-27 04:59:23,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:59:23,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61863 states. [2020-10-27 04:59:26,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61863 to 18052. [2020-10-27 04:59:26,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18052 states. [2020-10-27 04:59:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18052 states to 18052 states and 24875 transitions. [2020-10-27 04:59:26,832 INFO L78 Accepts]: Start accepts. Automaton has 18052 states and 24875 transitions. Word has length 171 [2020-10-27 04:59:26,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:26,833 INFO L481 AbstractCegarLoop]: Abstraction has 18052 states and 24875 transitions. [2020-10-27 04:59:26,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:59:26,833 INFO L276 IsEmpty]: Start isEmpty. Operand 18052 states and 24875 transitions. [2020-10-27 04:59:26,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-27 04:59:26,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:26,846 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] [2020-10-27 04:59:26,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:59:26,846 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:26,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:26,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1448602721, now seen corresponding path program 1 times [2020-10-27 04:59:26,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:26,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315226460] [2020-10-27 04:59:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:26,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:27,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:27,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:27,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:31,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:31,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 04:59:31,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:59:31,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:59:31,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:31,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:59:31,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:59:31,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:59:31,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:32,240 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:59:32,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:32,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:32,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:32,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:32,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:32,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:59:32,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:32,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:32,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:32,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:32,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:32,307 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 04:59:32,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315226460] [2020-10-27 04:59:32,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:32,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:32,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512231294] [2020-10-27 04:59:32,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:59:32,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:32,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:59:32,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:59:32,312 INFO L87 Difference]: Start difference. First operand 18052 states and 24875 transitions. Second operand 5 states. [2020-10-27 04:59:35,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:35,715 INFO L93 Difference]: Finished difference Result 29997 states and 41293 transitions. [2020-10-27 04:59:35,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:59:35,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-27 04:59:35,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:35,734 INFO L225 Difference]: With dead ends: 29997 [2020-10-27 04:59:35,734 INFO L226 Difference]: Without dead ends: 12243 [2020-10-27 04:59:35,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:59:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12243 states. [2020-10-27 04:59:37,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12243 to 12243. [2020-10-27 04:59:37,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12243 states. [2020-10-27 04:59:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12243 states to 12243 states and 16753 transitions. [2020-10-27 04:59:37,536 INFO L78 Accepts]: Start accepts. Automaton has 12243 states and 16753 transitions. Word has length 171 [2020-10-27 04:59:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:37,536 INFO L481 AbstractCegarLoop]: Abstraction has 12243 states and 16753 transitions. [2020-10-27 04:59:37,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:59:37,536 INFO L276 IsEmpty]: Start isEmpty. Operand 12243 states and 16753 transitions. [2020-10-27 04:59:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-27 04:59:37,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:37,544 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] [2020-10-27 04:59:37,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:59:37,544 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:37,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:37,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1120004035, now seen corresponding path program 1 times [2020-10-27 04:59:37,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:37,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901273639] [2020-10-27 04:59:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:37,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:38,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:38,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:38,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:38,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:39,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:39,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:39,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:39,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:42,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:42,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 04:59:42,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 04:59:42,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:59:42,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:59:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 04:59:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 04:59:42,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:42,915 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:59:42,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:42,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:42,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:42,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:42,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:42,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:59:42,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:42,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:42,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:42,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:42,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:42,974 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 04:59:42,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901273639] [2020-10-27 04:59:42,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:42,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:42,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716275405] [2020-10-27 04:59:42,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:59:42,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:42,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:59:42,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:59:42,976 INFO L87 Difference]: Start difference. First operand 12243 states and 16753 transitions. Second operand 5 states. [2020-10-27 04:59:45,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:45,763 INFO L93 Difference]: Finished difference Result 19551 states and 26735 transitions. [2020-10-27 04:59:45,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:59:45,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-27 04:59:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:45,777 INFO L225 Difference]: With dead ends: 19551 [2020-10-27 04:59:45,777 INFO L226 Difference]: Without dead ends: 10403 [2020-10-27 04:59:45,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:59:45,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10403 states. [2020-10-27 04:59:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10403 to 10402. [2020-10-27 04:59:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10402 states. [2020-10-27 04:59:47,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10402 states to 10402 states and 14210 transitions. [2020-10-27 04:59:47,269 INFO L78 Accepts]: Start accepts. Automaton has 10402 states and 14210 transitions. Word has length 179 [2020-10-27 04:59:47,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:47,269 INFO L481 AbstractCegarLoop]: Abstraction has 10402 states and 14210 transitions. [2020-10-27 04:59:47,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:59:47,269 INFO L276 IsEmpty]: Start isEmpty. Operand 10402 states and 14210 transitions. [2020-10-27 04:59:47,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-27 04:59:47,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:47,274 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] [2020-10-27 04:59:47,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:59:47,274 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:47,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:47,275 INFO L82 PathProgramCache]: Analyzing trace with hash -945831182, now seen corresponding path program 1 times [2020-10-27 04:59:47,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:47,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939625032] [2020-10-27 04:59:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:47,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:47,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:47,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:47,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:47,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:47,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:49,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:49,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:50,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:50,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:52,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:52,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 04:59:52,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:59:52,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:59:52,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:59:52,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:59:52,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:59:52,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:52,633 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:59:52,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:52,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:52,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:52,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:52,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:52,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:59:52,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:59:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:59:52,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:52,702 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 04:59:52,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939625032] [2020-10-27 04:59:52,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:52,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:52,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047853748] [2020-10-27 04:59:52,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:59:52,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:52,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:59:52,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:59:52,704 INFO L87 Difference]: Start difference. First operand 10402 states and 14210 transitions. Second operand 6 states. [2020-10-27 04:59:53,119 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:59:56,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:56,001 INFO L93 Difference]: Finished difference Result 19379 states and 26776 transitions. [2020-10-27 04:59:56,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:59:56,002 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-10-27 04:59:56,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:56,014 INFO L225 Difference]: With dead ends: 19379 [2020-10-27 04:59:56,014 INFO L226 Difference]: Without dead ends: 10402 [2020-10-27 04:59:56,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:59:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10402 states. [2020-10-27 04:59:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10402 to 10402. [2020-10-27 04:59:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10402 states. [2020-10-27 04:59:57,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10402 states to 10402 states and 14034 transitions. [2020-10-27 04:59:57,536 INFO L78 Accepts]: Start accepts. Automaton has 10402 states and 14034 transitions. Word has length 181 [2020-10-27 04:59:57,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:57,536 INFO L481 AbstractCegarLoop]: Abstraction has 10402 states and 14034 transitions. [2020-10-27 04:59:57,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:59:57,537 INFO L276 IsEmpty]: Start isEmpty. Operand 10402 states and 14034 transitions. [2020-10-27 04:59:57,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-27 04:59:57,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:57,541 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] [2020-10-27 04:59:57,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:59:57,541 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:57,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:57,542 INFO L82 PathProgramCache]: Analyzing trace with hash -387389112, now seen corresponding path program 1 times [2020-10-27 04:59:57,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:57,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717785658] [2020-10-27 04:59:57,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:57,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:57,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:58,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:01,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:02,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:02,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 05:00:02,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:00:02,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 05:00:02,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 05:00:02,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:00:02,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-27 05:00:02,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:03,174 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-27 05:00:03,379 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-10-27 05:00:04,312 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 05:00:04,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:04,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:04,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:04,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:04,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:04,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:00:04,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:04,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:04,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:04,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:04,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:04,601 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 05:00:04,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717785658] [2020-10-27 05:00:04,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:04,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-27 05:00:04,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679325800] [2020-10-27 05:00:04,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 05:00:04,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:04,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 05:00:04,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-27 05:00:04,607 INFO L87 Difference]: Start difference. First operand 10402 states and 14034 transitions. Second operand 20 states. [2020-10-27 05:00:05,000 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:00:05,827 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-27 05:00:06,107 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-27 05:00:06,605 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2020-10-27 05:00:07,055 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-27 05:00:07,819 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-27 05:00:08,220 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-27 05:00:08,462 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-27 05:00:09,248 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-27 05:00:09,513 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-10-27 05:00:09,884 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-27 05:00:10,293 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2020-10-27 05:00:12,132 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2020-10-27 05:00:12,505 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2020-10-27 05:00:12,917 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2020-10-27 05:00:13,307 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-27 05:00:14,329 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-27 05:00:14,698 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2020-10-27 05:00:15,704 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2020-10-27 05:00:16,073 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-27 05:00:16,988 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 67 [2020-10-27 05:00:18,051 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 215 [2020-10-27 05:00:18,844 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 217 [2020-10-27 05:00:20,269 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 282 DAG size of output: 238 [2020-10-27 05:00:21,299 WARN L193 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 234 [2020-10-27 05:00:22,354 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 67 [2020-10-27 05:00:23,236 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2020-10-27 05:00:25,992 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2020-10-27 05:00:29,506 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2020-10-27 05:00:30,021 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-10-27 05:00:33,365 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 248 DAG size of output: 221 [2020-10-27 05:00:34,390 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 235