/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:38:06,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:38:06,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:38:06,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:38:06,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:38:06,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:38:06,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:38:06,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:38:06,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:38:06,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:38:06,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:38:06,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:38:06,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:38:06,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:38:06,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:38:06,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:38:06,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:38:06,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:38:06,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:38:06,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:38:06,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:38:06,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:38:06,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:38:06,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:38:06,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:38:06,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:38:06,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:38:06,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:38:06,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:38:06,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:38:06,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:38:06,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:38:06,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:38:06,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:38:06,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:38:06,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:38:06,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:38:06,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:38:06,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:38:06,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:38:06,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:38:06,180 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 23:38:06,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:38:06,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:38:06,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:38:06,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:38:06,209 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:38:06,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:38:06,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:38:06,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:38:06,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:38:06,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:38:06,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:38:06,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:38:06,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:38:06,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:38:06,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:38:06,212 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:38:06,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:38:06,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:38:06,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:38:06,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:38:06,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:38:06,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:38:06,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:38:06,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:38:06,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:38:06,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:38:06,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:38:06,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:38:06,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:38:06,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:38:06,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:38:06,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:38:06,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:38:06,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:38:06,708 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:38:06,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 23:38:06,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32c365654/f840486d9aa2417caf4f3058032c07d7/FLAG5382c5cc0 [2020-10-27 23:38:07,644 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:38:07,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 23:38:07,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32c365654/f840486d9aa2417caf4f3058032c07d7/FLAG5382c5cc0 [2020-10-27 23:38:07,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32c365654/f840486d9aa2417caf4f3058032c07d7 [2020-10-27 23:38:07,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:38:07,775 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:38:07,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:38:07,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:38:07,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:38:07,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:38:07" (1/1) ... [2020-10-27 23:38:07,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c28dbf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:38:07, skipping insertion in model container [2020-10-27 23:38:07,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:38:07" (1/1) ... [2020-10-27 23:38:07,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:38:07,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:38:09,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:38:09,247 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:38:09,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:38:09,925 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:38:09,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:38:09 WrapperNode [2020-10-27 23:38:09,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:38:09,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:38:09,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:38:09,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:38:09,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:38:09" (1/1) ... [2020-10-27 23:38:09,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:38:09" (1/1) ... [2020-10-27 23:38:10,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:38:09" (1/1) ... [2020-10-27 23:38:10,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:38:09" (1/1) ... [2020-10-27 23:38:10,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:38:09" (1/1) ... [2020-10-27 23:38:10,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:38:09" (1/1) ... [2020-10-27 23:38:10,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:38:09" (1/1) ... [2020-10-27 23:38:10,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:38:10,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:38:10,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:38:10,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:38:10,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:38:09" (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 23:38:10,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:38:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:38:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:38:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:38:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:38:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:38:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:38:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:38:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:38:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:38:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:38:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:38:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:38:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:38:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:38:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:38:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:38:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:38:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:38:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:38:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:38:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:38:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:38:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:38:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:38:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:38:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:38:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:38:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:38:15,199 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:38:15,200 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:38:15,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:38:15 BoogieIcfgContainer [2020-10-27 23:38:15,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:38:15,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:38:15,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:38:15,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:38:15,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:38:07" (1/3) ... [2020-10-27 23:38:15,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad4393e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:38:15, skipping insertion in model container [2020-10-27 23:38:15,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:38:09" (2/3) ... [2020-10-27 23:38:15,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad4393e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:38:15, skipping insertion in model container [2020-10-27 23:38:15,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:38:15" (3/3) ... [2020-10-27 23:38:15,217 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 23:38:15,230 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:38:15,237 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:38:15,252 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:38:15,305 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:38:15,305 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:38:15,305 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:38:15,305 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:38:15,306 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:38:15,306 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:38:15,306 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:38:15,306 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:38:15,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states. [2020-10-27 23:38:15,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-27 23:38:15,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:38:15,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:38:15,410 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:38:15,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:38:15,421 INFO L82 PathProgramCache]: Analyzing trace with hash -150030411, now seen corresponding path program 1 times [2020-10-27 23:38:15,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:38:15,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029694997] [2020-10-27 23:38:15,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:38:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:16,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:16,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:16,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:17,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:17,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:17,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:18,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:20,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:20,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:21,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:21,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-27 23:38:21,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:38:21,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 23:38:21,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:21,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:38:21,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-27 23:38:21,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:38:21,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:38:23,278 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 23:38:23,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:38:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:23,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:23,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:23,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:38:23,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:38:23,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 23:38:23,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:38:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:38:23,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:38:23,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:23,568 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 23:38:23,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029694997] [2020-10-27 23:38:23,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:38:23,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:38:23,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767337667] [2020-10-27 23:38:23,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:38:23,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:38:23,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:38:23,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:38:23,596 INFO L87 Difference]: Start difference. First operand 1443 states. Second operand 4 states. [2020-10-27 23:38:24,901 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 413 [2020-10-27 23:38:37,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:38:37,269 INFO L93 Difference]: Finished difference Result 2635 states and 4618 transitions. [2020-10-27 23:38:37,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:38:37,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 357 [2020-10-27 23:38:37,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:38:37,311 INFO L225 Difference]: With dead ends: 2635 [2020-10-27 23:38:37,311 INFO L226 Difference]: Without dead ends: 1883 [2020-10-27 23:38:37,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:38:37,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2020-10-27 23:38:37,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1880. [2020-10-27 23:38:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1880 states. [2020-10-27 23:38:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 3144 transitions. [2020-10-27 23:38:37,538 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 3144 transitions. Word has length 357 [2020-10-27 23:38:37,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:38:37,544 INFO L481 AbstractCegarLoop]: Abstraction has 1880 states and 3144 transitions. [2020-10-27 23:38:37,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:38:37,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 3144 transitions. [2020-10-27 23:38:37,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-27 23:38:37,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:38:37,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:38:37,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:38:37,557 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:38:37,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:38:37,558 INFO L82 PathProgramCache]: Analyzing trace with hash -574059059, now seen corresponding path program 1 times [2020-10-27 23:38:37,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:38:37,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879301255] [2020-10-27 23:38:37,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:38:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:37,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:38,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:38,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:38,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:38,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:39,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:40,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:40,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:41,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:41,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:42,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:42,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:42,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:42,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-27 23:38:42,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:38:42,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5159 [2020-10-27 23:38:42,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:38:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-10-27 23:38:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 23:38:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:44,437 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 23:38:44,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:38:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:44,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:44,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:44,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:38:44,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:38:44,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 23:38:44,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:44,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:38:44,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:38:44,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:38:44,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:44,736 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 23:38:44,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879301255] [2020-10-27 23:38:44,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:38:44,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:38:44,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180479700] [2020-10-27 23:38:44,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:38:44,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:38:44,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:38:44,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:38:44,753 INFO L87 Difference]: Start difference. First operand 1880 states and 3144 transitions. Second operand 4 states. [2020-10-27 23:38:46,026 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 417 [2020-10-27 23:38:59,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:38:59,712 INFO L93 Difference]: Finished difference Result 4252 states and 7010 transitions. [2020-10-27 23:38:59,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:38:59,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 359 [2020-10-27 23:38:59,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:38:59,732 INFO L225 Difference]: With dead ends: 4252 [2020-10-27 23:38:59,732 INFO L226 Difference]: Without dead ends: 3109 [2020-10-27 23:38:59,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:38:59,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2020-10-27 23:38:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 2952. [2020-10-27 23:38:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2952 states. [2020-10-27 23:38:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 4881 transitions. [2020-10-27 23:38:59,885 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 4881 transitions. Word has length 359 [2020-10-27 23:38:59,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:38:59,886 INFO L481 AbstractCegarLoop]: Abstraction has 2952 states and 4881 transitions. [2020-10-27 23:38:59,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:38:59,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 4881 transitions. [2020-10-27 23:38:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-27 23:38:59,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:38:59,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:38:59,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:38:59,899 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:38:59,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:38:59,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1151842886, now seen corresponding path program 1 times [2020-10-27 23:38:59,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:38:59,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198286129] [2020-10-27 23:38:59,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:38:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:00,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:00,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:00,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:00,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:00,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:01,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:01,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:01,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:04,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:04,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:05,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:05,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-27 23:39:05,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:39:05,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-27 23:39:05,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:39:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-27 23:39:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 23:39:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:06,273 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 23:39:06,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:39:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:06,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:06,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:06,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:39:06,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:39:06,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 23:39:06,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:39:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:39:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:39:06,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:06,509 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 23:39:06,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198286129] [2020-10-27 23:39:06,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:39:06,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:39:06,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24115128] [2020-10-27 23:39:06,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:39:06,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:39:06,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:39:06,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:39:06,512 INFO L87 Difference]: Start difference. First operand 2952 states and 4881 transitions. Second operand 4 states. [2020-10-27 23:39:07,695 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 413 [2020-10-27 23:39:18,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:39:18,998 INFO L93 Difference]: Finished difference Result 6623 states and 10845 transitions. [2020-10-27 23:39:18,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:39:18,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 360 [2020-10-27 23:39:19,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:39:19,022 INFO L225 Difference]: With dead ends: 6623 [2020-10-27 23:39:19,024 INFO L226 Difference]: Without dead ends: 4425 [2020-10-27 23:39:19,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:39:19,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2020-10-27 23:39:19,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 4422. [2020-10-27 23:39:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4422 states. [2020-10-27 23:39:19,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 7253 transitions. [2020-10-27 23:39:19,259 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 7253 transitions. Word has length 360 [2020-10-27 23:39:19,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:39:19,260 INFO L481 AbstractCegarLoop]: Abstraction has 4422 states and 7253 transitions. [2020-10-27 23:39:19,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:39:19,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 7253 transitions. [2020-10-27 23:39:19,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-27 23:39:19,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:39:19,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:39:19,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:39:19,275 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:39:19,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:39:19,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1249552388, now seen corresponding path program 1 times [2020-10-27 23:39:19,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:39:19,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947207234] [2020-10-27 23:39:19,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:39:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:19,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:19,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:19,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:20,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:20,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:22,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:22,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:22,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:22,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:23,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:23,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:23,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:24,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:24,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:24,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:24,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-27 23:39:24,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:39:24,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-27 23:39:24,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:39:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 205 [2020-10-27 23:39:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 23:39:24,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:25,747 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 23:39:25,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:39:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:25,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:25,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:25,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:39:25,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:39:25,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:39:25,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:25,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:39:25,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:39:25,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:39:25,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:26,009 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 23:39:26,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947207234] [2020-10-27 23:39:26,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:39:26,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:39:26,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399807254] [2020-10-27 23:39:26,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:39:26,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:39:26,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:39:26,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:39:26,012 INFO L87 Difference]: Start difference. First operand 4422 states and 7253 transitions. Second operand 4 states. [2020-10-27 23:39:27,205 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 417 [2020-10-27 23:39:38,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:39:38,123 INFO L93 Difference]: Finished difference Result 11447 states and 18597 transitions. [2020-10-27 23:39:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:39:38,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 362 [2020-10-27 23:39:38,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:39:38,158 INFO L225 Difference]: With dead ends: 11447 [2020-10-27 23:39:38,159 INFO L226 Difference]: Without dead ends: 7934 [2020-10-27 23:39:38,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:39:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7934 states. [2020-10-27 23:39:38,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7934 to 7359. [2020-10-27 23:39:38,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7359 states. [2020-10-27 23:39:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7359 states to 7359 states and 11953 transitions. [2020-10-27 23:39:38,654 INFO L78 Accepts]: Start accepts. Automaton has 7359 states and 11953 transitions. Word has length 362 [2020-10-27 23:39:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:39:38,655 INFO L481 AbstractCegarLoop]: Abstraction has 7359 states and 11953 transitions. [2020-10-27 23:39:38,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:39:38,655 INFO L276 IsEmpty]: Start isEmpty. Operand 7359 states and 11953 transitions. [2020-10-27 23:39:38,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-27 23:39:38,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:39:38,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:39:38,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:39:38,676 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:39:38,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:39:38,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1050066618, now seen corresponding path program 1 times [2020-10-27 23:39:38,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:39:38,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125894798] [2020-10-27 23:39:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:39:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:38,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:38,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:39,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:39,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:39,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:40,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:40,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:40,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:42,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:42,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:43,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:43,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:43,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:43,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-27 23:39:43,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:39:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 23:39:43,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:39:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 226 [2020-10-27 23:39:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 23:39:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:45,060 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 23:39:45,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:39:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:45,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:45,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:39:45,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:39:45,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:39:45,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 23:39:45,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:39:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:39:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:39:45,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:39:45,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:39:45,314 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 23:39:45,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125894798] [2020-10-27 23:39:45,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:39:45,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:39:45,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634690007] [2020-10-27 23:39:45,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:39:45,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:39:45,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:39:45,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:39:45,317 INFO L87 Difference]: Start difference. First operand 7359 states and 11953 transitions. Second operand 4 states. [2020-10-27 23:39:55,787 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 415 [2020-10-27 23:39:57,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:39:57,001 INFO L93 Difference]: Finished difference Result 10425 states and 17057 transitions. [2020-10-27 23:39:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:39:57,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 364 [2020-10-27 23:39:57,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:39:57,028 INFO L225 Difference]: With dead ends: 10425 [2020-10-27 23:39:57,028 INFO L226 Difference]: Without dead ends: 5330 [2020-10-27 23:39:57,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:39:57,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5330 states. [2020-10-27 23:39:57,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5330 to 5327. [2020-10-27 23:39:57,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5327 states. [2020-10-27 23:39:57,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5327 states to 5327 states and 8749 transitions. [2020-10-27 23:39:57,430 INFO L78 Accepts]: Start accepts. Automaton has 5327 states and 8749 transitions. Word has length 364 [2020-10-27 23:39:57,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:39:57,431 INFO L481 AbstractCegarLoop]: Abstraction has 5327 states and 8749 transitions. [2020-10-27 23:39:57,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:39:57,431 INFO L276 IsEmpty]: Start isEmpty. Operand 5327 states and 8749 transitions. [2020-10-27 23:39:57,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-27 23:39:57,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:39:57,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:39:57,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:39:57,445 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:39:57,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:39:57,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1973558473, now seen corresponding path program 1 times [2020-10-27 23:39:57,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:39:57,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334770149] [2020-10-27 23:39:57,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:39:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:39:57,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:57,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:57,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:58,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:58,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:58,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:39:59,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:01,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:01,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:01,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:02,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:02,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:02,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:02,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-27 23:40:02,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:40:02,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-27 23:40:02,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:02,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:40:02,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-27 23:40:02,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 23:40:02,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:03,924 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 23:40:03,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:03,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:03,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:03,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:03,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:03,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 23:40:03,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:03,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:03,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:03,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:03,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:04,208 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 23:40:04,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334770149] [2020-10-27 23:40:04,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:40:04,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:40:04,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565955703] [2020-10-27 23:40:04,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:40:04,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:40:04,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:40:04,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:40:04,211 INFO L87 Difference]: Start difference. First operand 5327 states and 8749 transitions. Second operand 4 states. [2020-10-27 23:40:05,410 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 417 [2020-10-27 23:40:18,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:40:18,072 INFO L93 Difference]: Finished difference Result 13597 states and 22161 transitions. [2020-10-27 23:40:18,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:40:18,079 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 364 [2020-10-27 23:40:18,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:40:18,116 INFO L225 Difference]: With dead ends: 13597 [2020-10-27 23:40:18,116 INFO L226 Difference]: Without dead ends: 9510 [2020-10-27 23:40:18,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:40:18,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9510 states. [2020-10-27 23:40:18,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9510 to 8715. [2020-10-27 23:40:18,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8715 states. [2020-10-27 23:40:18,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8715 states to 8715 states and 14173 transitions. [2020-10-27 23:40:18,635 INFO L78 Accepts]: Start accepts. Automaton has 8715 states and 14173 transitions. Word has length 364 [2020-10-27 23:40:18,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:40:18,635 INFO L481 AbstractCegarLoop]: Abstraction has 8715 states and 14173 transitions. [2020-10-27 23:40:18,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:40:18,636 INFO L276 IsEmpty]: Start isEmpty. Operand 8715 states and 14173 transitions. [2020-10-27 23:40:18,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-27 23:40:18,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:40:18,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:40:18,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:40:18,650 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:40:18,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:40:18,651 INFO L82 PathProgramCache]: Analyzing trace with hash -715075967, now seen corresponding path program 1 times [2020-10-27 23:40:18,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:40:18,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870260393] [2020-10-27 23:40:18,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:40:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:18,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:18,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:19,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:19,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:19,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:19,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:20,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:23,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:23,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:23,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-27 23:40:23,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:40:23,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 23:40:23,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:23,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:40:23,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-27 23:40:23,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 23:40:23,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:24,983 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 23:40:24,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:24,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:25,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:25,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:25,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:40:25,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:25,242 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 23:40:25,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870260393] [2020-10-27 23:40:25,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:40:25,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:40:25,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679109085] [2020-10-27 23:40:25,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:40:25,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:40:25,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:40:25,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:40:25,245 INFO L87 Difference]: Start difference. First operand 8715 states and 14173 transitions. Second operand 4 states. [2020-10-27 23:40:26,503 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 413 [2020-10-27 23:40:37,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:40:37,703 INFO L93 Difference]: Finished difference Result 15265 states and 24901 transitions. [2020-10-27 23:40:37,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:40:37,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 366 [2020-10-27 23:40:37,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:40:37,721 INFO L225 Difference]: With dead ends: 15265 [2020-10-27 23:40:37,722 INFO L226 Difference]: Without dead ends: 8302 [2020-10-27 23:40:37,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:40:37,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8302 states. [2020-10-27 23:40:38,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8302 to 8299. [2020-10-27 23:40:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8299 states. [2020-10-27 23:40:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8299 states to 8299 states and 13541 transitions. [2020-10-27 23:40:38,167 INFO L78 Accepts]: Start accepts. Automaton has 8299 states and 13541 transitions. Word has length 366 [2020-10-27 23:40:38,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:40:38,168 INFO L481 AbstractCegarLoop]: Abstraction has 8299 states and 13541 transitions. [2020-10-27 23:40:38,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:40:38,168 INFO L276 IsEmpty]: Start isEmpty. Operand 8299 states and 13541 transitions. [2020-10-27 23:40:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-27 23:40:38,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:40:38,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:40:38,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:40:38,182 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:40:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:40:38,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1555191859, now seen corresponding path program 1 times [2020-10-27 23:40:38,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:40:38,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705870407] [2020-10-27 23:40:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:40:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:38,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:38,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:38,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:38,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:38,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:39,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:39,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:39,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:42,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:43,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:43,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:43,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-27 23:40:43,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:40:43,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 23:40:43,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:43,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:40:43,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-27 23:40:43,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:40:43,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:44,539 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 23:40:44,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:40:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:40:44,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:40:44,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:40:44,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:40:44,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:40:44,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:40:44,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:40:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:40:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:40:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:40:44,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:40:44,659 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 23:40:44,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705870407] [2020-10-27 23:40:44,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:40:44,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:40:44,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594172110] [2020-10-27 23:40:44,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:40:44,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:40:44,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:40:44,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:40:44,662 INFO L87 Difference]: Start difference. First operand 8299 states and 13541 transitions. Second operand 4 states. [2020-10-27 23:40:45,937 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 413 [2020-10-27 23:40:59,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:40:59,550 INFO L93 Difference]: Finished difference Result 15166 states and 24793 transitions. [2020-10-27 23:40:59,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:40:59,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 366 [2020-10-27 23:40:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:40:59,568 INFO L225 Difference]: With dead ends: 15166 [2020-10-27 23:40:59,569 INFO L226 Difference]: Without dead ends: 8091 [2020-10-27 23:40:59,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:40:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2020-10-27 23:41:00,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 8088. [2020-10-27 23:41:00,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8088 states. [2020-10-27 23:41:00,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8088 states to 8088 states and 13228 transitions. [2020-10-27 23:41:00,041 INFO L78 Accepts]: Start accepts. Automaton has 8088 states and 13228 transitions. Word has length 366 [2020-10-27 23:41:00,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:41:00,042 INFO L481 AbstractCegarLoop]: Abstraction has 8088 states and 13228 transitions. [2020-10-27 23:41:00,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:41:00,042 INFO L276 IsEmpty]: Start isEmpty. Operand 8088 states and 13228 transitions. [2020-10-27 23:41:00,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-27 23:41:00,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:41:00,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:41:00,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:41:00,056 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:41:00,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:41:00,057 INFO L82 PathProgramCache]: Analyzing trace with hash -290119432, now seen corresponding path program 1 times [2020-10-27 23:41:00,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:41:00,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114050355] [2020-10-27 23:41:00,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:41:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:00,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:00,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:00,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:01,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:01,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:02,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:02,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:02,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:03,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:03,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:03,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:04,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:04,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:05,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:05,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-27 23:41:05,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 23:41:05,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-27 23:41:05,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:41:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 290 [2020-10-27 23:41:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 23:41:05,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:06,504 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 23:41:06,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:41:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:06,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:06,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:06,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:41:06,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:41:06,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:41:06,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:41:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:41:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:41:06,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:06,633 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 23:41:06,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114050355] [2020-10-27 23:41:06,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:41:06,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:41:06,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693782364] [2020-10-27 23:41:06,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:41:06,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:41:06,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:41:06,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:41:06,637 INFO L87 Difference]: Start difference. First operand 8088 states and 13228 transitions. Second operand 4 states. [2020-10-27 23:41:07,904 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-27 23:41:20,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:41:20,887 INFO L93 Difference]: Finished difference Result 14006 states and 23248 transitions. [2020-10-27 23:41:20,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:41:20,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 367 [2020-10-27 23:41:20,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:41:20,903 INFO L225 Difference]: With dead ends: 14006 [2020-10-27 23:41:20,904 INFO L226 Difference]: Without dead ends: 10071 [2020-10-27 23:41:20,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:41:20,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10071 states. [2020-10-27 23:41:21,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10071 to 10060. [2020-10-27 23:41:21,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10060 states. [2020-10-27 23:41:21,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10060 states to 10060 states and 16476 transitions. [2020-10-27 23:41:21,487 INFO L78 Accepts]: Start accepts. Automaton has 10060 states and 16476 transitions. Word has length 367 [2020-10-27 23:41:21,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:41:21,488 INFO L481 AbstractCegarLoop]: Abstraction has 10060 states and 16476 transitions. [2020-10-27 23:41:21,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:41:21,488 INFO L276 IsEmpty]: Start isEmpty. Operand 10060 states and 16476 transitions. [2020-10-27 23:41:21,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-27 23:41:21,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:41:21,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:41:21,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:41:21,501 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:41:21,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:41:21,502 INFO L82 PathProgramCache]: Analyzing trace with hash -506131384, now seen corresponding path program 1 times [2020-10-27 23:41:21,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:41:21,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355786264] [2020-10-27 23:41:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:41:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:21,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:21,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:21,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:22,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:22,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:22,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:22,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:22,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:24,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:24,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:25,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:26,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:26,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:26,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:26,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-27 23:41:26,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:41:26,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:41:26,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:41:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 237 [2020-10-27 23:41:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 23:41:26,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:27,971 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 23:41:27,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:41:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:27,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:28,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:41:28,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:41:28,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:41:28,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:41:28,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:41:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:41:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:41:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:41:28,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:41:28,149 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 23:41:28,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355786264] [2020-10-27 23:41:28,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:41:28,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:41:28,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000263839] [2020-10-27 23:41:28,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:41:28,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:41:28,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:41:28,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:41:28,151 INFO L87 Difference]: Start difference. First operand 10060 states and 16476 transitions. Second operand 4 states. [2020-10-27 23:41:29,422 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 23:41:40,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:41:40,283 INFO L93 Difference]: Finished difference Result 20780 states and 34512 transitions. [2020-10-27 23:41:40,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:41:40,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 367 [2020-10-27 23:41:40,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:41:40,302 INFO L225 Difference]: With dead ends: 20780 [2020-10-27 23:41:40,302 INFO L226 Difference]: Without dead ends: 15929 [2020-10-27 23:41:40,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:41:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15929 states. [2020-10-27 23:41:41,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15929 to 15926. [2020-10-27 23:41:41,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15926 states. [2020-10-27 23:41:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15926 states to 15926 states and 26276 transitions. [2020-10-27 23:41:41,077 INFO L78 Accepts]: Start accepts. Automaton has 15926 states and 26276 transitions. Word has length 367 [2020-10-27 23:41:41,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:41:41,078 INFO L481 AbstractCegarLoop]: Abstraction has 15926 states and 26276 transitions. [2020-10-27 23:41:41,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:41:41,078 INFO L276 IsEmpty]: Start isEmpty. Operand 15926 states and 26276 transitions. [2020-10-27 23:41:41,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-27 23:41:41,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:41:41,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:41:41,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:41:41,093 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:41:41,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:41:41,093 INFO L82 PathProgramCache]: Analyzing trace with hash 126736189, now seen corresponding path program 1 times [2020-10-27 23:41:41,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:41:41,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495524316] [2020-10-27 23:41:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:41:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:41:41,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:41,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:41,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:41,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:41,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:42,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:42,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:42,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:43,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:43,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:43,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:43,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:43,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:43,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:44,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:44,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:44,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:44,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:44,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:41:45,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking...