/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:10:40,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:10:40,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:10:40,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:10:40,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:10:40,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:10:40,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:10:40,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:10:40,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:10:40,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:10:40,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:10:40,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:10:40,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:10:40,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:10:40,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:10:40,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:10:40,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:10:40,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:10:40,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:10:40,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:10:40,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:10:40,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:10:40,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:10:40,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:10:40,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:10:40,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:10:40,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:10:40,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:10:40,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:10:40,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:10:40,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:10:40,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:10:40,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:10:40,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:10:40,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:10:40,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:10:40,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:10:40,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:10:40,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:10:40,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:10:40,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:10:40,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:10:40,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:10:40,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:10:40,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:10:40,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:10:40,214 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:10:40,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:10:40,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:10:40,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:10:40,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:10:40,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:10:40,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:10:40,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:10:40,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:10:40,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:10:40,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:10:40,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:10:40,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:10:40,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:10:40,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:10:40,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:10:40,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:10:40,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:10:40,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:10:40,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:10:40,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:10:40,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:10:40,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:10:40,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:10:40,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:10:40,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:10:40,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:10:40,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:10:40,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:10:40,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:10:40,726 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:10:40,727 INFO L432 ainManager$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.p+lhb-reducer.c [2020-10-29 13:10:40,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a23dc2f2/9531e6ef068a48cda0a97e3717ad230e/FLAGd972118e6 [2020-10-29 13:10:41,711 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:10:41,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-29 13:10:41,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a23dc2f2/9531e6ef068a48cda0a97e3717ad230e/FLAGd972118e6 [2020-10-29 13:10:42,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a23dc2f2/9531e6ef068a48cda0a97e3717ad230e [2020-10-29 13:10:42,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:10:42,226 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:10:42,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:10:42,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:10:42,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:10:42,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:10:42" (1/1) ... [2020-10-29 13:10:42,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dae2f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:42, skipping insertion in model container [2020-10-29 13:10:42,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:10:42" (1/1) ... [2020-10-29 13:10:42,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:10:42,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:10:44,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:10:44,880 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:10:46,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:10:46,356 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:10:46,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:46 WrapperNode [2020-10-29 13:10:46,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:10:46,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:10:46,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:10:46,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:10:46,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:46" (1/1) ... [2020-10-29 13:10:46,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:46" (1/1) ... [2020-10-29 13:10:46,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:46" (1/1) ... [2020-10-29 13:10:46,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:46" (1/1) ... [2020-10-29 13:10:46,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:46" (1/1) ... [2020-10-29 13:10:46,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:46" (1/1) ... [2020-10-29 13:10:46,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:46" (1/1) ... [2020-10-29 13:10:46,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:10:46,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:10:46,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:10:46,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:10:46,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:10:46,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:10:46,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:10:46,757 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:10:46,758 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:10:46,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:10:46,758 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:10:46,758 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:10:46,758 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:10:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:10:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:10:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:10:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:10:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:10:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:10:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:10:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:10:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:10:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:10:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:10:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:10:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:10:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:10:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:10:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:10:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:10:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:10:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:10:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:10:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:10:53,696 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:10:53,696 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:10:53,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:10:53 BoogieIcfgContainer [2020-10-29 13:10:53,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:10:53,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:10:53,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:10:53,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:10:53,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:10:42" (1/3) ... [2020-10-29 13:10:53,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676a10a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:10:53, skipping insertion in model container [2020-10-29 13:10:53,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:46" (2/3) ... [2020-10-29 13:10:53,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676a10a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:10:53, skipping insertion in model container [2020-10-29 13:10:53,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:10:53" (3/3) ... [2020-10-29 13:10:53,711 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-29 13:10:53,723 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:10:53,730 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:10:53,743 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:10:53,784 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:10:53,784 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:10:53,784 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:10:53,784 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:10:53,784 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:10:53,784 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:10:53,785 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:10:53,785 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:10:53,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states. [2020-10-29 13:10:53,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-29 13:10:53,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:10:53,880 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] [2020-10-29 13:10:53,882 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:10:53,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:10:53,889 INFO L82 PathProgramCache]: Analyzing trace with hash -2058974461, now seen corresponding path program 1 times [2020-10-29 13:10:53,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:10:53,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195339342] [2020-10-29 13:10:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:10:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:54,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:55,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:56,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:57,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:58,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:58,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:58,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:59,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:59,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-29 13:10:59,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:10:59,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5156 [2020-10-29 13:10:59,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:59,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:10:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-29 13:10:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 13:10:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:11:02,150 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 13:11:02,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:11:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:02,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:02,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:02,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:11:02,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:11:02,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 13:11:02,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:02,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:11:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:11:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:11:02,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:11:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:11:02,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195339342] [2020-10-29 13:11:02,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:11:02,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:11:02,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121494721] [2020-10-29 13:11:02,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:11:02,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:11:02,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:11:02,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:11:02,529 INFO L87 Difference]: Start difference. First operand 2253 states. Second operand 4 states. [2020-10-29 13:11:21,053 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 13:11:22,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:11:22,607 INFO L93 Difference]: Finished difference Result 5107 states and 8889 transitions. [2020-10-29 13:11:22,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:11:22,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 291 [2020-10-29 13:11:22,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:11:22,647 INFO L225 Difference]: With dead ends: 5107 [2020-10-29 13:11:22,647 INFO L226 Difference]: Without dead ends: 3663 [2020-10-29 13:11:22,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:11:22,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2020-10-29 13:11:22,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3571. [2020-10-29 13:11:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3571 states. [2020-10-29 13:11:22,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 6202 transitions. [2020-10-29 13:11:22,899 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 6202 transitions. Word has length 291 [2020-10-29 13:11:22,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:11:22,901 INFO L481 AbstractCegarLoop]: Abstraction has 3571 states and 6202 transitions. [2020-10-29 13:11:22,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:11:22,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 6202 transitions. [2020-10-29 13:11:22,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-29 13:11:22,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:11:22,914 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] [2020-10-29 13:11:22,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:11:22,914 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:11:22,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:11:22,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1555307333, now seen corresponding path program 1 times [2020-10-29 13:11:22,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:11:22,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968108154] [2020-10-29 13:11:22,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:11:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:23,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:24,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:24,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:25,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:25,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:26,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:28,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:28,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-29 13:11:28,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:11:28,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-10-29 13:11:28,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:28,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:11:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:11:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 13:11:28,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:11:29,880 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 13:11:29,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:11:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:29,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:29,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:29,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:11:29,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:11:29,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 13:11:29,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:29,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:29,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:11:29,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:11:29,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:11:29,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:11:30,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968108154] [2020-10-29 13:11:30,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:11:30,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:11:30,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019345358] [2020-10-29 13:11:30,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:11:30,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:11:30,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:11:30,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:11:30,438 INFO L87 Difference]: Start difference. First operand 3571 states and 6202 transitions. Second operand 5 states. [2020-10-29 13:11:55,991 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 13:11:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:11:59,380 INFO L93 Difference]: Finished difference Result 10576 states and 18383 transitions. [2020-10-29 13:11:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:11:59,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2020-10-29 13:11:59,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:11:59,421 INFO L225 Difference]: With dead ends: 10576 [2020-10-29 13:11:59,422 INFO L226 Difference]: Without dead ends: 7054 [2020-10-29 13:11:59,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:11:59,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7054 states. [2020-10-29 13:11:59,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7054 to 7050. [2020-10-29 13:11:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7050 states. [2020-10-29 13:11:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7050 states to 7050 states and 12230 transitions. [2020-10-29 13:11:59,927 INFO L78 Accepts]: Start accepts. Automaton has 7050 states and 12230 transitions. Word has length 307 [2020-10-29 13:11:59,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:11:59,928 INFO L481 AbstractCegarLoop]: Abstraction has 7050 states and 12230 transitions. [2020-10-29 13:11:59,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:11:59,929 INFO L276 IsEmpty]: Start isEmpty. Operand 7050 states and 12230 transitions. [2020-10-29 13:11:59,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-29 13:11:59,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:11:59,953 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] [2020-10-29 13:11:59,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:11:59,954 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:11:59,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:11:59,957 INFO L82 PathProgramCache]: Analyzing trace with hash -598959614, now seen corresponding path program 1 times [2020-10-29 13:11:59,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:11:59,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331706679] [2020-10-29 13:11:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:12:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:00,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:00,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:00,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:01,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:01,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:01,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:01,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:03,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:05,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:05,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 13:12:05,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:12:05,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 13:12:05,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:05,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:05,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:12:05,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 13:12:05,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 13:12:05,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:06,566 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 13:12:06,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:12:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:06,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:06,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:12:06,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:12:06,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 13:12:06,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:06,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:12:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:12:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:12:06,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:12:06,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331706679] [2020-10-29 13:12:06,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:12:06,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:12:06,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142185111] [2020-10-29 13:12:06,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:12:06,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:12:06,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:12:06,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:12:06,829 INFO L87 Difference]: Start difference. First operand 7050 states and 12230 transitions. Second operand 4 states. [2020-10-29 13:12:41,913 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 429 [2020-10-29 13:12:45,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:12:45,294 INFO L93 Difference]: Finished difference Result 20728 states and 35958 transitions. [2020-10-29 13:12:45,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:12:45,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 309 [2020-10-29 13:12:45,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:12:45,381 INFO L225 Difference]: With dead ends: 20728 [2020-10-29 13:12:45,381 INFO L226 Difference]: Without dead ends: 13913 [2020-10-29 13:12:45,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:12:45,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13913 states. [2020-10-29 13:12:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13913 to 13909. [2020-10-29 13:12:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13909 states. [2020-10-29 13:12:46,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13909 states to 13909 states and 24091 transitions. [2020-10-29 13:12:46,392 INFO L78 Accepts]: Start accepts. Automaton has 13909 states and 24091 transitions. Word has length 309 [2020-10-29 13:12:46,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:12:46,393 INFO L481 AbstractCegarLoop]: Abstraction has 13909 states and 24091 transitions. [2020-10-29 13:12:46,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:12:46,393 INFO L276 IsEmpty]: Start isEmpty. Operand 13909 states and 24091 transitions. [2020-10-29 13:12:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-29 13:12:46,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:12:46,437 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] [2020-10-29 13:12:46,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:12:46,438 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:12:46,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:12:46,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1323367542, now seen corresponding path program 1 times [2020-10-29 13:12:46,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:12:46,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739886052] [2020-10-29 13:12:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:12:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:46,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:46,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:46,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:47,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:47,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:47,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:47,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:48,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:48,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:49,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:51,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:51,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-29 13:12:51,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:12:51,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-29 13:12:51,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:51,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:51,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:12:51,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 13:12:51,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 13:12:51,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:12:53,041 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 13:12:53,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:12:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:53,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:53,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:53,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:12:53,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:12:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 13:12:53,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:53,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:53,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:12:53,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:12:53,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:12:53,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:12:53,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739886052] [2020-10-29 13:12:53,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:12:53,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:12:53,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908311837] [2020-10-29 13:12:53,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:12:53,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:12:53,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:12:53,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:12:53,353 INFO L87 Difference]: Start difference. First operand 13909 states and 24091 transitions. Second operand 4 states. [2020-10-29 13:13:29,949 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 429 [2020-10-29 13:13:33,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:13:33,216 INFO L93 Difference]: Finished difference Result 41011 states and 71049 transitions. [2020-10-29 13:13:33,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:13:33,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 310 [2020-10-29 13:13:33,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:13:33,287 INFO L225 Difference]: With dead ends: 41011 [2020-10-29 13:13:33,288 INFO L226 Difference]: Without dead ends: 27399 [2020-10-29 13:13:33,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:13:33,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27399 states. [2020-10-29 13:13:34,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27399 to 27395. [2020-10-29 13:13:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27395 states. [2020-10-29 13:13:34,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27395 states to 27395 states and 47364 transitions. [2020-10-29 13:13:34,936 INFO L78 Accepts]: Start accepts. Automaton has 27395 states and 47364 transitions. Word has length 310 [2020-10-29 13:13:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:13:34,937 INFO L481 AbstractCegarLoop]: Abstraction has 27395 states and 47364 transitions. [2020-10-29 13:13:34,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:13:34,937 INFO L276 IsEmpty]: Start isEmpty. Operand 27395 states and 47364 transitions. [2020-10-29 13:13:35,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-29 13:13:35,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:13:35,007 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] [2020-10-29 13:13:35,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:13:35,008 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:13:35,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:13:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1480031505, now seen corresponding path program 1 times [2020-10-29 13:13:35,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:13:35,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886838497] [2020-10-29 13:13:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:13:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:13:35,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:35,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:35,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:35,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:35,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:36,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:36,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:36,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:37,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:37,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:40,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:13:40,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-29 13:13:40,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:13:40,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-29 13:13:40,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:13:40,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:13:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:13:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:13:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 13:13:40,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:13:41,541 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 13:13:41,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:13:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:13:41,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:41,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:13:41,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:13:41,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:13:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:13:41,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:13:41,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:13:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:13:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:13:41,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:13:41,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:13:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:13:41,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886838497] [2020-10-29 13:13:41,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:13:41,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:13:41,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726790055] [2020-10-29 13:13:41,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:13:41,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:13:41,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:13:41,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:13:41,781 INFO L87 Difference]: Start difference. First operand 27395 states and 47364 transitions. Second operand 5 states. [2020-10-29 13:14:11,600 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 13:14:15,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:14:15,342 INFO L93 Difference]: Finished difference Result 80485 states and 139143 transitions. [2020-10-29 13:14:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:14:15,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-29 13:14:15,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:14:15,470 INFO L225 Difference]: With dead ends: 80485 [2020-10-29 13:14:15,471 INFO L226 Difference]: Without dead ends: 53769 [2020-10-29 13:14:15,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:14:15,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53769 states.