/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:40:16,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:40:16,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:40:16,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:40:16,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:40:16,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:40:16,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:40:16,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:40:16,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:40:16,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:40:16,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:40:16,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:40:16,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:40:16,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:40:16,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:40:16,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:40:16,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:40:16,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:40:16,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:40:16,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:40:16,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:40:16,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:40:16,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:40:16,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:40:16,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:40:16,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:40:16,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:40:16,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:40:16,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:40:16,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:40:16,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:40:16,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:40:16,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:40:16,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:40:16,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:40:16,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:40:16,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:40:16,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:40:16,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:40:16,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:40:16,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:40:16,832 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 05:40:16,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:40:16,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:40:16,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:40:16,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:40:16,884 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:40:16,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:40:16,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:40:16,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:40:16,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:40:16,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:40:16,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:40:16,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:40:16,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:40:16,887 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:40:16,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:40:16,888 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:40:16,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:40:16,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:40:16,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:40:16,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:40:16,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:40:16,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:40:16,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:40:16,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:40:16,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:40:16,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:40:16,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:40:16,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:40:16,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:40:16,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:40:17,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:40:17,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:40:17,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:40:17,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:40:17,351 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:40:17,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label22.c [2020-10-29 05:40:17,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ded75a911/d38444fb8dc647c99e3f1693db0d864a/FLAG648e375c5 [2020-10-29 05:40:18,607 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:40:18,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label22.c [2020-10-29 05:40:18,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ded75a911/d38444fb8dc647c99e3f1693db0d864a/FLAG648e375c5 [2020-10-29 05:40:18,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ded75a911/d38444fb8dc647c99e3f1693db0d864a [2020-10-29 05:40:18,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:40:18,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:40:18,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:40:18,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:40:18,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:40:18,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:40:18" (1/1) ... [2020-10-29 05:40:18,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12cfa491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:18, skipping insertion in model container [2020-10-29 05:40:18,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:40:18" (1/1) ... [2020-10-29 05:40:18,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:40:19,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:40:21,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:40:21,275 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:40:22,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:40:22,492 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:40:22,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:22 WrapperNode [2020-10-29 05:40:22,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:40:22,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:40:22,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:40:22,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:40:22,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:22" (1/1) ... [2020-10-29 05:40:22,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:22" (1/1) ... [2020-10-29 05:40:22,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:22" (1/1) ... [2020-10-29 05:40:22,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:22" (1/1) ... [2020-10-29 05:40:22,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:22" (1/1) ... [2020-10-29 05:40:22,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:22" (1/1) ... [2020-10-29 05:40:23,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:22" (1/1) ... [2020-10-29 05:40:23,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:40:23,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:40:23,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:40:23,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:40:23,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:22" (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 05:40:23,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:40:23,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:40:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:40:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:40:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:40:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:40:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:40:23,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:40:23,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:40:23,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:40:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:40:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:40:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:40:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:40:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:40:23,172 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:40:23,172 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:40:23,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:40:23,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:40:23,172 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:40:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:40:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:40:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:40:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:40:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:40:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:40:23,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:40:31,074 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:40:31,075 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:40:31,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:40:31 BoogieIcfgContainer [2020-10-29 05:40:31,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:40:31,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:40:31,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:40:31,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:40:31,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:40:18" (1/3) ... [2020-10-29 05:40:31,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a1a373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:40:31, skipping insertion in model container [2020-10-29 05:40:31,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:40:22" (2/3) ... [2020-10-29 05:40:31,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a1a373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:40:31, skipping insertion in model container [2020-10-29 05:40:31,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:40:31" (3/3) ... [2020-10-29 05:40:31,094 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label22.c [2020-10-29 05:40:31,106 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:40:31,112 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:40:31,125 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:40:31,161 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:40:31,162 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:40:31,162 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:40:31,162 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:40:31,162 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:40:31,162 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:40:31,163 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:40:31,163 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:40:31,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:40:31,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2020-10-29 05:40:31,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:40:31,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:31,293 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:40:31,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:40:31,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1135089216, now seen corresponding path program 1 times [2020-10-29 05:40:31,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:40:31,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711936202] [2020-10-29 05:40:31,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:40:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:32,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:37,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:37,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1008 [2020-10-29 05:40:37,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:40:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5395 [2020-10-29 05:40:37,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:37,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:37,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:40:37,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:40:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 999 [2020-10-29 05:40:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:40:39,688 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:40:39,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:40:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:39,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:39,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:39,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:40:39,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:40:39,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 05:40:39,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:39,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:40:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:40:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:40:39,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:40:41,218 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 05:40:41,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711936202] [2020-10-29 05:40:41,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:40:41,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:40:41,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748415797] [2020-10-29 05:40:41,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:40:41,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:40:41,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:40:41,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:40:41,248 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-29 05:40:41,564 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:40:59,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:40:59,220 INFO L93 Difference]: Finished difference Result 3764 states and 7025 transitions. [2020-10-29 05:40:59,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:40:59,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 990 [2020-10-29 05:40:59,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:40:59,285 INFO L225 Difference]: With dead ends: 3764 [2020-10-29 05:40:59,285 INFO L226 Difference]: Without dead ends: 2381 [2020-10-29 05:40:59,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:40:59,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-10-29 05:40:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2338. [2020-10-29 05:40:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2338 states. [2020-10-29 05:40:59,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 3805 transitions. [2020-10-29 05:40:59,524 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 3805 transitions. Word has length 990 [2020-10-29 05:40:59,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:40:59,529 INFO L481 AbstractCegarLoop]: Abstraction has 2338 states and 3805 transitions. [2020-10-29 05:40:59,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:40:59,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 3805 transitions. [2020-10-29 05:40:59,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2020-10-29 05:40:59,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:40:59,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:59,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:40:59,643 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:40:59,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:40:59,646 INFO L82 PathProgramCache]: Analyzing trace with hash -476118783, now seen corresponding path program 1 times [2020-10-29 05:40:59,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:40:59,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308791966] [2020-10-29 05:40:59,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:40:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:02,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:04,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:04,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1018 [2020-10-29 05:41:04,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:41:04,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 05:41:04,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:04,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:41:04,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:41:04,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 996 [2020-10-29 05:41:04,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:41:05,782 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:41:05,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:41:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:05,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:05,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:05,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:41:05,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:05,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 05:41:05,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:05,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:41:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:41:05,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:05,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:41:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:05,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:05,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:05,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:41:05,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:05,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:41:05,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:05,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:41:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:41:05,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:06,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:41:06,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308791966] [2020-10-29 05:41:06,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:41:06,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:41:06,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899412705] [2020-10-29 05:41:06,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:41:06,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:41:06,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:41:06,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:41:06,938 INFO L87 Difference]: Start difference. First operand 2338 states and 3805 transitions. Second operand 5 states. [2020-10-29 05:41:07,189 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 05:41:24,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:41:24,821 INFO L93 Difference]: Finished difference Result 6845 states and 11273 transitions. [2020-10-29 05:41:24,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:41:24,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 998 [2020-10-29 05:41:24,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:41:24,862 INFO L225 Difference]: With dead ends: 6845 [2020-10-29 05:41:24,862 INFO L226 Difference]: Without dead ends: 4513 [2020-10-29 05:41:24,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:41:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2020-10-29 05:41:25,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 4445. [2020-10-29 05:41:25,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4445 states. [2020-10-29 05:41:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 6901 transitions. [2020-10-29 05:41:25,047 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 6901 transitions. Word has length 998 [2020-10-29 05:41:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:41:25,050 INFO L481 AbstractCegarLoop]: Abstraction has 4445 states and 6901 transitions. [2020-10-29 05:41:25,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:41:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 6901 transitions. [2020-10-29 05:41:25,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2020-10-29 05:41:25,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:41:25,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:25,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:41:25,072 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:41:25,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:41:25,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1538840562, now seen corresponding path program 1 times [2020-10-29 05:41:25,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:41:25,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639711626] [2020-10-29 05:41:25,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:41:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:25,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:27,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:30,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:30,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1025 [2020-10-29 05:41:30,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:41:30,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5194 [2020-10-29 05:41:30,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:30,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:30,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:41:30,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:41:30,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 996 [2020-10-29 05:41:30,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:31,335 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:41:31,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:41:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:31,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:31,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:31,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:41:31,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:31,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:41:31,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:31,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:41:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:41:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:31,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:41:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:31,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:31,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:31,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:41:31,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:31,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 05:41:31,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:31,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:31,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:41:31,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:31,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:41:31,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:41:32,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639711626] [2020-10-29 05:41:32,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:41:32,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:41:32,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752151999] [2020-10-29 05:41:32,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:41:32,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:41:32,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:41:32,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:41:32,541 INFO L87 Difference]: Start difference. First operand 4445 states and 6901 transitions. Second operand 5 states. [2020-10-29 05:41:32,800 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:41:51,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:41:51,473 INFO L93 Difference]: Finished difference Result 13062 states and 20542 transitions. [2020-10-29 05:41:51,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:41:51,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1005 [2020-10-29 05:41:51,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:41:51,526 INFO L225 Difference]: With dead ends: 13062 [2020-10-29 05:41:51,526 INFO L226 Difference]: Without dead ends: 8623 [2020-10-29 05:41:51,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:41:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8623 states. [2020-10-29 05:41:51,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8623 to 8604. [2020-10-29 05:41:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8604 states. [2020-10-29 05:41:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8604 states to 8604 states and 12695 transitions. [2020-10-29 05:41:51,779 INFO L78 Accepts]: Start accepts. Automaton has 8604 states and 12695 transitions. Word has length 1005 [2020-10-29 05:41:51,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:41:51,780 INFO L481 AbstractCegarLoop]: Abstraction has 8604 states and 12695 transitions. [2020-10-29 05:41:51,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:41:51,780 INFO L276 IsEmpty]: Start isEmpty. Operand 8604 states and 12695 transitions. [2020-10-29 05:41:51,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1015 [2020-10-29 05:41:51,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:41:51,812 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:51,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:41:51,813 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:41:51,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:41:51,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1538777138, now seen corresponding path program 1 times [2020-10-29 05:41:51,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:41:51,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175715699] [2020-10-29 05:41:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:41:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:51,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:52,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:57,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:57,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1036 [2020-10-29 05:41:57,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:41:57,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-29 05:41:57,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:57,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:41:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:41:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:41:57,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:57,504 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:41:57,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:41:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:57,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:57,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:41:57,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:57,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:41:57,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:57,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:41:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:41:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:57,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:41:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:57,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:57,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:57,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:41:57,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:57,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:41:57,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:57,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:41:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:41:57,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:57,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 05:41:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:57,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:57,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:57,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:41:57,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:57,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 05:41:57,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:57,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:41:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:41:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:41:57,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:41:58,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175715699] [2020-10-29 05:41:58,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:41:58,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:41:58,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699588555] [2020-10-29 05:41:58,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:41:58,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:41:58,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:41:58,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:41:58,571 INFO L87 Difference]: Start difference. First operand 8604 states and 12695 transitions. Second operand 7 states. [2020-10-29 05:41:58,952 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:41:59,630 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:42:22,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:42:22,229 INFO L93 Difference]: Finished difference Result 21808 states and 34298 transitions. [2020-10-29 05:42:22,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:42:22,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1014 [2020-10-29 05:42:22,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:42:22,300 INFO L225 Difference]: With dead ends: 21808 [2020-10-29 05:42:22,300 INFO L226 Difference]: Without dead ends: 13210 [2020-10-29 05:42:22,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:42:22,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13210 states. [2020-10-29 05:42:22,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13210 to 12996. [2020-10-29 05:42:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12996 states. [2020-10-29 05:42:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12996 states to 12996 states and 18813 transitions. [2020-10-29 05:42:22,721 INFO L78 Accepts]: Start accepts. Automaton has 12996 states and 18813 transitions. Word has length 1014 [2020-10-29 05:42:22,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:42:22,722 INFO L481 AbstractCegarLoop]: Abstraction has 12996 states and 18813 transitions. [2020-10-29 05:42:22,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:42:22,722 INFO L276 IsEmpty]: Start isEmpty. Operand 12996 states and 18813 transitions. [2020-10-29 05:42:22,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2020-10-29 05:42:22,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:42:22,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:22,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:42:22,771 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:42:22,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:42:22,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1942529274, now seen corresponding path program 1 times [2020-10-29 05:42:22,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:42:22,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822768242] [2020-10-29 05:42:22,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:42:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:22,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:24,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:28,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:28,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1035 [2020-10-29 05:42:28,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:42:28,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-29 05:42:28,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:28,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:28,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 05:42:28,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:42:28,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1026 [2020-10-29 05:42:28,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:28,849 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:42:28,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:42:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:28,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:28,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:28,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:42:28,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:28,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:42:28,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:28,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:28,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:42:28,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:42:28,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:42:28,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:28,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:42:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:29,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:29,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:29,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:29,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 05:42:29,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:42:29,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 05:42:29,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:29,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:29,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:42:29,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:42:29,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 05:42:29,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:30,157 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 05:42:30,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822768242] [2020-10-29 05:42:30,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:42:30,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:42:30,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888249942] [2020-10-29 05:42:30,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:42:30,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:42:30,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:42:30,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:42:30,160 INFO L87 Difference]: Start difference. First operand 12996 states and 18813 transitions. Second operand 5 states. [2020-10-29 05:42:30,418 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:42:46,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:42:46,396 INFO L93 Difference]: Finished difference Result 38475 states and 57764 transitions. [2020-10-29 05:42:46,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:42:46,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1015 [2020-10-29 05:42:46,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:42:46,491 INFO L225 Difference]: With dead ends: 38475 [2020-10-29 05:42:46,491 INFO L226 Difference]: Without dead ends: 25485 [2020-10-29 05:42:46,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:42:46,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25485 states. [2020-10-29 05:42:47,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25485 to 25443. [2020-10-29 05:42:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25443 states. [2020-10-29 05:42:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25443 states to 25443 states and 35856 transitions. [2020-10-29 05:42:47,209 INFO L78 Accepts]: Start accepts. Automaton has 25443 states and 35856 transitions. Word has length 1015 [2020-10-29 05:42:47,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:42:47,211 INFO L481 AbstractCegarLoop]: Abstraction has 25443 states and 35856 transitions. [2020-10-29 05:42:47,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:42:47,211 INFO L276 IsEmpty]: Start isEmpty. Operand 25443 states and 35856 transitions. [2020-10-29 05:42:47,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1034 [2020-10-29 05:42:47,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:42:47,306 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:47,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:42:47,307 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:42:47,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:42:47,308 INFO L82 PathProgramCache]: Analyzing trace with hash 196559655, now seen corresponding path program 1 times [2020-10-29 05:42:47,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:42:47,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652722215] [2020-10-29 05:42:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:42:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:47,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:50,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:52,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:52,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1055 [2020-10-29 05:42:52,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:42:52,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5178 [2020-10-29 05:42:52,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:52,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:42:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 05:42:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 997 [2020-10-29 05:42:52,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:53,519 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:42:53,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:42:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:53,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:53,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:53,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:42:53,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:53,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:42:53,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:53,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:53,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:42:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:42:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:42:53,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:53,646 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:42:53,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:42:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:53,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:53,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:53,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:42:53,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:53,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:42:53,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:53,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:53,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:42:53,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:42:53,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:42:53,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:53,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 05:42:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:53,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:53,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:53,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:42:53,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:53,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:42:53,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:53,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:42:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:42:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:42:53,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 05:42:54,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652722215] [2020-10-29 05:42:54,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:42:54,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:42:54,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433520996] [2020-10-29 05:42:54,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:42:54,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:42:54,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:42:54,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:42:54,627 INFO L87 Difference]: Start difference. First operand 25443 states and 35856 transitions. Second operand 5 states. [2020-10-29 05:42:55,181 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:43:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:43:17,483 INFO L93 Difference]: Finished difference Result 75955 states and 111079 transitions. [2020-10-29 05:43:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:43:17,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1033 [2020-10-29 05:43:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:43:17,679 INFO L225 Difference]: With dead ends: 75955 [2020-10-29 05:43:17,680 INFO L226 Difference]: Without dead ends: 50518 [2020-10-29 05:43:17,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:43:17,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50518 states. [2020-10-29 05:43:18,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50518 to 50472. [2020-10-29 05:43:18,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50472 states. [2020-10-29 05:43:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50472 states to 50472 states and 70643 transitions. [2020-10-29 05:43:19,026 INFO L78 Accepts]: Start accepts. Automaton has 50472 states and 70643 transitions. Word has length 1033 [2020-10-29 05:43:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:43:19,028 INFO L481 AbstractCegarLoop]: Abstraction has 50472 states and 70643 transitions. [2020-10-29 05:43:19,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:43:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 50472 states and 70643 transitions. [2020-10-29 05:43:19,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1045 [2020-10-29 05:43:19,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:43:19,167 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:19,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:43:19,167 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:43:19,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:43:19,168 INFO L82 PathProgramCache]: Analyzing trace with hash -475275847, now seen corresponding path program 1 times [2020-10-29 05:43:19,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:43:19,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83660391] [2020-10-29 05:43:19,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:43:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:19,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:24,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:24,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:24,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1064 [2020-10-29 05:43:24,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:43:24,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5264 [2020-10-29 05:43:24,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:24,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:24,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:43:24,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-29 05:43:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 998 [2020-10-29 05:43:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:25,259 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:43:25,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:43:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:25,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:25,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:25,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:43:25,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:25,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:43:25,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:25,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:25,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:43:25,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:43:25,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:43:25,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:25,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:43:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:25,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:25,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 05:43:25,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:25,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 05:43:25,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:25,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:43:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:43:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 05:43:25,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:43:26,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83660391] [2020-10-29 05:43:26,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:43:26,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:43:26,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225385826] [2020-10-29 05:43:26,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:43:26,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:43:26,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:43:26,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:43:26,905 INFO L87 Difference]: Start difference. First operand 50472 states and 70643 transitions. Second operand 5 states. [2020-10-29 05:43:27,512 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:43:50,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:43:50,308 INFO L93 Difference]: Finished difference Result 137042 states and 197814 transitions. [2020-10-29 05:43:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:43:50,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1044 [2020-10-29 05:43:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:43:50,723 INFO L225 Difference]: With dead ends: 137042 [2020-10-29 05:43:50,724 INFO L226 Difference]: Without dead ends: 86576 [2020-10-29 05:43:50,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:43:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86576 states. [2020-10-29 05:43:52,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86576 to 86524. [2020-10-29 05:43:52,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86524 states. [2020-10-29 05:43:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86524 states to 86524 states and 118943 transitions. [2020-10-29 05:43:52,977 INFO L78 Accepts]: Start accepts. Automaton has 86524 states and 118943 transitions. Word has length 1044 [2020-10-29 05:43:52,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:43:52,979 INFO L481 AbstractCegarLoop]: Abstraction has 86524 states and 118943 transitions. [2020-10-29 05:43:52,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:43:52,979 INFO L276 IsEmpty]: Start isEmpty. Operand 86524 states and 118943 transitions. [2020-10-29 05:43:53,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1057 [2020-10-29 05:43:53,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:43:53,181 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:53,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:43:53,181 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:43:53,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:43:53,182 INFO L82 PathProgramCache]: Analyzing trace with hash 88648503, now seen corresponding path program 1 times [2020-10-29 05:43:53,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:43:53,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524935852] [2020-10-29 05:43:53,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:43:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:53,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:54,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:55,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking...