./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf2e081cc9f75dea6397073b82669a6a6f9f53b1ab4e083e4f8da1bc210df95c --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:02:29,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:02:29,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:02:29,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:02:29,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:02:29,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:02:29,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:02:29,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:02:29,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:02:29,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:02:29,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:02:29,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:02:29,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:02:29,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:02:29,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:02:29,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:02:29,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:02:29,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:02:29,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:02:29,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:02:29,792 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:02:29,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:02:29,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:02:29,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:02:29,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:02:29,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:02:29,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:02:29,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:02:29,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:02:29,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:02:29,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:02:29,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:02:29,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:02:29,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:02:29,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:02:29,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:02:29,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:02:29,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:02:29,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:02:29,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:02:29,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:02:29,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:02:29,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:02:29,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:02:29,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:02:29,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:02:29,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:02:29,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:02:29,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:02:29,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:02:29,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:02:29,843 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:02:29,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:02:29,844 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:02:29,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:02:29,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:02:29,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:02:29,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:02:29,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:02:29,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:02:29,845 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:02:29,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:02:29,845 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:02:29,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:02:29,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:02:29,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:02:29,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:02:29,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:02:29,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:02:29,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:02:29,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:02:29,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:02:29,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:02:29,847 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:02:29,848 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:02:29,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:02:29,848 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf2e081cc9f75dea6397073b82669a6a6f9f53b1ab4e083e4f8da1bc210df95c [2022-07-22 18:02:30,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:02:30,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:02:30,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:02:30,201 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:02:30,201 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:02:30,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2022-07-22 18:02:30,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59a5428ac/3c5d21c544e744dfaa179672dbfb3884/FLAGcd12b5013 [2022-07-22 18:02:31,076 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:02:31,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2022-07-22 18:02:31,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59a5428ac/3c5d21c544e744dfaa179672dbfb3884/FLAGcd12b5013 [2022-07-22 18:02:31,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59a5428ac/3c5d21c544e744dfaa179672dbfb3884 [2022-07-22 18:02:31,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:02:31,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:02:31,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:02:31,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:02:31,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:02:31,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:02:31" (1/1) ... [2022-07-22 18:02:31,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee5eef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:02:31, skipping insertion in model container [2022-07-22 18:02:31,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:02:31" (1/1) ... [2022-07-22 18:02:31,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:02:31,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:02:31,884 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c[12820,12833] [2022-07-22 18:02:31,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:02:31,904 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:02:31,964 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c[12820,12833] [2022-07-22 18:02:31,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:02:31,978 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:02:31,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:02:31 WrapperNode [2022-07-22 18:02:31,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:02:31,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:02:31,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:02:31,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:02:31,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:02:31" (1/1) ... [2022-07-22 18:02:31,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:02:31" (1/1) ... [2022-07-22 18:02:32,028 INFO L137 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 389 [2022-07-22 18:02:32,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:02:32,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:02:32,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:02:32,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:02:32,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:02:31" (1/1) ... [2022-07-22 18:02:32,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:02:31" (1/1) ... [2022-07-22 18:02:32,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:02:31" (1/1) ... [2022-07-22 18:02:32,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:02:31" (1/1) ... [2022-07-22 18:02:32,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:02:31" (1/1) ... [2022-07-22 18:02:32,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:02:31" (1/1) ... [2022-07-22 18:02:32,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:02:31" (1/1) ... [2022-07-22 18:02:32,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:02:32,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:02:32,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:02:32,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:02:32,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:02:31" (1/1) ... [2022-07-22 18:02:32,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:02:32,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:02:32,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 18:02:32,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 18:02:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:02:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:02:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:02:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:02:32,308 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:02:32,321 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:02:33,077 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:02:33,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:02:33,104 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 18:02:33,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:02:33 BoogieIcfgContainer [2022-07-22 18:02:33,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:02:33,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:02:33,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:02:33,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:02:33,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:02:31" (1/3) ... [2022-07-22 18:02:33,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216ed673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:02:33, skipping insertion in model container [2022-07-22 18:02:33,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:02:31" (2/3) ... [2022-07-22 18:02:33,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216ed673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:02:33, skipping insertion in model container [2022-07-22 18:02:33,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:02:33" (3/3) ... [2022-07-22 18:02:33,129 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2022-07-22 18:02:33,145 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:02:33,145 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:02:33,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:02:33,338 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a9179b3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@638d95e3 [2022-07-22 18:02:33,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:02:33,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 123 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:33,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 18:02:33,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:02:33,361 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:02:33,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:02:33,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:02:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1522683097, now seen corresponding path program 1 times [2022-07-22 18:02:33,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:02:33,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503978914] [2022-07-22 18:02:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:02:33,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:02:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:02:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:02:33,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:02:33,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503978914] [2022-07-22 18:02:33,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503978914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:02:33,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:02:33,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 18:02:33,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524367164] [2022-07-22 18:02:33,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:02:33,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 18:02:33,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:02:33,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 18:02:33,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 18:02:33,668 INFO L87 Difference]: Start difference. First operand has 124 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 123 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:33,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:02:33,708 INFO L93 Difference]: Finished difference Result 207 states and 343 transitions. [2022-07-22 18:02:33,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 18:02:33,711 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-07-22 18:02:33,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:02:33,722 INFO L225 Difference]: With dead ends: 207 [2022-07-22 18:02:33,722 INFO L226 Difference]: Without dead ends: 120 [2022-07-22 18:02:33,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 18:02:33,730 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:02:33,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:02:33,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-22 18:02:33,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-07-22 18:02:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.6890756302521008) internal successors, (201), 119 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 201 transitions. [2022-07-22 18:02:33,778 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 201 transitions. Word has length 34 [2022-07-22 18:02:33,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:02:33,779 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 201 transitions. [2022-07-22 18:02:33,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:33,780 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 201 transitions. [2022-07-22 18:02:33,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 18:02:33,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:02:33,784 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:02:33,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:02:33,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:02:33,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:02:33,786 INFO L85 PathProgramCache]: Analyzing trace with hash -136479703, now seen corresponding path program 1 times [2022-07-22 18:02:33,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:02:33,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891911620] [2022-07-22 18:02:33,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:02:33,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:02:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:02:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:02:33,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:02:33,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891911620] [2022-07-22 18:02:33,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891911620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:02:33,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:02:33,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:02:33,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713323101] [2022-07-22 18:02:33,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:02:33,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:02:33,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:02:33,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:02:33,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:02:33,951 INFO L87 Difference]: Start difference. First operand 120 states and 201 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:34,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:02:34,099 INFO L93 Difference]: Finished difference Result 206 states and 336 transitions. [2022-07-22 18:02:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:02:34,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-07-22 18:02:34,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:02:34,102 INFO L225 Difference]: With dead ends: 206 [2022-07-22 18:02:34,102 INFO L226 Difference]: Without dead ends: 120 [2022-07-22 18:02:34,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:02:34,104 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 3 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:02:34,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 761 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:02:34,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-22 18:02:34,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-07-22 18:02:34,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.4201680672268908) internal successors, (169), 119 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:34,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 169 transitions. [2022-07-22 18:02:34,117 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 169 transitions. Word has length 34 [2022-07-22 18:02:34,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:02:34,119 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 169 transitions. [2022-07-22 18:02:34,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 169 transitions. [2022-07-22 18:02:34,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 18:02:34,124 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:02:34,124 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:02:34,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:02:34,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:02:34,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:02:34,127 INFO L85 PathProgramCache]: Analyzing trace with hash 958823668, now seen corresponding path program 1 times [2022-07-22 18:02:34,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:02:34,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129967149] [2022-07-22 18:02:34,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:02:34,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:02:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:02:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:02:34,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:02:34,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129967149] [2022-07-22 18:02:34,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129967149] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:02:34,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:02:34,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:02:34,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909655822] [2022-07-22 18:02:34,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:02:34,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:02:34,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:02:34,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:02:34,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:02:34,322 INFO L87 Difference]: Start difference. First operand 120 states and 169 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:34,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:02:34,350 INFO L93 Difference]: Finished difference Result 272 states and 411 transitions. [2022-07-22 18:02:34,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:02:34,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-22 18:02:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:02:34,359 INFO L225 Difference]: With dead ends: 272 [2022-07-22 18:02:34,360 INFO L226 Difference]: Without dead ends: 190 [2022-07-22 18:02:34,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:02:34,371 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 114 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:02:34,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 376 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:02:34,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-22 18:02:34,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2022-07-22 18:02:34,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.4866310160427807) internal successors, (278), 187 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 278 transitions. [2022-07-22 18:02:34,419 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 278 transitions. Word has length 65 [2022-07-22 18:02:34,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:02:34,437 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 278 transitions. [2022-07-22 18:02:34,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:34,438 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 278 transitions. [2022-07-22 18:02:34,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 18:02:34,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:02:34,443 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:02:34,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:02:34,443 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:02:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:02:34,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1904004827, now seen corresponding path program 1 times [2022-07-22 18:02:34,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:02:34,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157167442] [2022-07-22 18:02:34,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:02:34,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:02:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:02:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:02:34,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:02:34,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157167442] [2022-07-22 18:02:34,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157167442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:02:34,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:02:34,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:02:34,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294008256] [2022-07-22 18:02:34,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:02:34,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:02:34,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:02:34,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:02:34,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:02:34,561 INFO L87 Difference]: Start difference. First operand 188 states and 278 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:34,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:02:34,640 INFO L93 Difference]: Finished difference Result 464 states and 718 transitions. [2022-07-22 18:02:34,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:02:34,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-22 18:02:34,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:02:34,645 INFO L225 Difference]: With dead ends: 464 [2022-07-22 18:02:34,645 INFO L226 Difference]: Without dead ends: 314 [2022-07-22 18:02:34,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:02:34,674 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 109 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:02:34,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 367 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:02:34,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-07-22 18:02:34,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2022-07-22 18:02:34,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.527331189710611) internal successors, (475), 311 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:34,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 475 transitions. [2022-07-22 18:02:34,721 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 475 transitions. Word has length 66 [2022-07-22 18:02:34,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:02:34,723 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 475 transitions. [2022-07-22 18:02:34,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:34,724 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 475 transitions. [2022-07-22 18:02:34,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 18:02:34,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:02:34,726 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:02:34,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:02:34,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:02:34,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:02:34,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1896694372, now seen corresponding path program 1 times [2022-07-22 18:02:34,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:02:34,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030559094] [2022-07-22 18:02:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:02:34,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:02:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:02:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:02:34,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:02:34,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030559094] [2022-07-22 18:02:34,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030559094] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:02:34,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:02:34,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:02:34,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091455641] [2022-07-22 18:02:34,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:02:34,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:02:34,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:02:34,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:02:34,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:02:34,881 INFO L87 Difference]: Start difference. First operand 312 states and 475 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:34,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:02:34,911 INFO L93 Difference]: Finished difference Result 812 states and 1269 transitions. [2022-07-22 18:02:34,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:02:34,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-22 18:02:34,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:02:34,915 INFO L225 Difference]: With dead ends: 812 [2022-07-22 18:02:34,915 INFO L226 Difference]: Without dead ends: 538 [2022-07-22 18:02:34,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:02:34,919 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 104 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:02:34,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 358 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:02:34,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-07-22 18:02:34,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2022-07-22 18:02:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.5457943925233646) internal successors, (827), 535 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 827 transitions. [2022-07-22 18:02:34,954 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 827 transitions. Word has length 67 [2022-07-22 18:02:34,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:02:34,955 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 827 transitions. [2022-07-22 18:02:34,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:34,955 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 827 transitions. [2022-07-22 18:02:34,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 18:02:34,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:02:34,956 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:02:34,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:02:34,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:02:34,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:02:34,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1528655733, now seen corresponding path program 1 times [2022-07-22 18:02:34,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:02:34,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393723553] [2022-07-22 18:02:34,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:02:34,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:02:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:02:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:02:35,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:02:35,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393723553] [2022-07-22 18:02:35,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393723553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:02:35,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:02:35,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:02:35,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411842542] [2022-07-22 18:02:35,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:02:35,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:02:35,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:02:35,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:02:35,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:02:35,070 INFO L87 Difference]: Start difference. First operand 536 states and 827 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:35,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:02:35,135 INFO L93 Difference]: Finished difference Result 1436 states and 2245 transitions. [2022-07-22 18:02:35,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:02:35,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-22 18:02:35,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:02:35,158 INFO L225 Difference]: With dead ends: 1436 [2022-07-22 18:02:35,159 INFO L226 Difference]: Without dead ends: 938 [2022-07-22 18:02:35,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:02:35,161 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 99 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:02:35,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 349 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:02:35,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-07-22 18:02:35,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2022-07-22 18:02:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 935 states have (on average 1.5475935828877005) internal successors, (1447), 935 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1447 transitions. [2022-07-22 18:02:35,231 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1447 transitions. Word has length 68 [2022-07-22 18:02:35,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:02:35,232 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1447 transitions. [2022-07-22 18:02:35,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1447 transitions. [2022-07-22 18:02:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 18:02:35,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:02:35,233 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:02:35,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:02:35,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:02:35,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:02:35,234 INFO L85 PathProgramCache]: Analyzing trace with hash -571662380, now seen corresponding path program 1 times [2022-07-22 18:02:35,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:02:35,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763251941] [2022-07-22 18:02:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:02:35,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:02:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:02:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:02:35,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:02:35,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763251941] [2022-07-22 18:02:35,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763251941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:02:35,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:02:35,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:02:35,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330757666] [2022-07-22 18:02:35,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:02:35,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:02:35,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:02:35,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:02:35,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:02:35,375 INFO L87 Difference]: Start difference. First operand 936 states and 1447 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:02:35,716 INFO L93 Difference]: Finished difference Result 6324 states and 9901 transitions. [2022-07-22 18:02:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:02:35,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-22 18:02:35,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:02:35,739 INFO L225 Difference]: With dead ends: 6324 [2022-07-22 18:02:35,739 INFO L226 Difference]: Without dead ends: 5426 [2022-07-22 18:02:35,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-22 18:02:35,743 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1237 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:02:35,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 2014 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:02:35,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2022-07-22 18:02:35,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 1832. [2022-07-22 18:02:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1831 states have (on average 1.5417804478427088) internal successors, (2823), 1831 states have internal predecessors, (2823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2823 transitions. [2022-07-22 18:02:35,919 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2823 transitions. Word has length 69 [2022-07-22 18:02:35,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:02:35,920 INFO L495 AbstractCegarLoop]: Abstraction has 1832 states and 2823 transitions. [2022-07-22 18:02:35,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:35,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2823 transitions. [2022-07-22 18:02:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 18:02:35,922 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:02:35,922 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:02:35,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:02:35,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:02:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:02:35,923 INFO L85 PathProgramCache]: Analyzing trace with hash -924987803, now seen corresponding path program 1 times [2022-07-22 18:02:35,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:02:35,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739196624] [2022-07-22 18:02:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:02:35,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:02:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:02:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:02:36,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:02:36,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739196624] [2022-07-22 18:02:36,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739196624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:02:36,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:02:36,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:02:36,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674498891] [2022-07-22 18:02:36,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:02:36,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:02:36,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:02:36,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:02:36,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:02:36,056 INFO L87 Difference]: Start difference. First operand 1832 states and 2823 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:02:36,798 INFO L93 Difference]: Finished difference Result 9874 states and 15148 transitions. [2022-07-22 18:02:36,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:02:36,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-22 18:02:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:02:36,830 INFO L225 Difference]: With dead ends: 9874 [2022-07-22 18:02:36,830 INFO L226 Difference]: Without dead ends: 8080 [2022-07-22 18:02:36,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:02:36,836 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 552 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:02:36,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 979 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:02:36,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8080 states. [2022-07-22 18:02:37,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8080 to 8072. [2022-07-22 18:02:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8072 states, 8071 states have (on average 1.5273200346921076) internal successors, (12327), 8071 states have internal predecessors, (12327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8072 states to 8072 states and 12327 transitions. [2022-07-22 18:02:37,530 INFO L78 Accepts]: Start accepts. Automaton has 8072 states and 12327 transitions. Word has length 70 [2022-07-22 18:02:37,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:02:37,531 INFO L495 AbstractCegarLoop]: Abstraction has 8072 states and 12327 transitions. [2022-07-22 18:02:37,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:37,531 INFO L276 IsEmpty]: Start isEmpty. Operand 8072 states and 12327 transitions. [2022-07-22 18:02:37,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-22 18:02:37,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:02:37,533 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:02:37,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:02:37,533 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:02:37,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:02:37,534 INFO L85 PathProgramCache]: Analyzing trace with hash 810353873, now seen corresponding path program 1 times [2022-07-22 18:02:37,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:02:37,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653244075] [2022-07-22 18:02:37,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:02:37,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:02:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:02:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:02:37,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:02:37,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653244075] [2022-07-22 18:02:37,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653244075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:02:37,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:02:37,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:02:37,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249064642] [2022-07-22 18:02:37,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:02:37,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:02:37,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:02:37,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:02:37,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:02:37,580 INFO L87 Difference]: Start difference. First operand 8072 states and 12327 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:38,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:02:38,559 INFO L93 Difference]: Finished difference Result 21996 states and 33385 transitions. [2022-07-22 18:02:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:02:38,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-22 18:02:38,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:02:38,616 INFO L225 Difference]: With dead ends: 21996 [2022-07-22 18:02:38,617 INFO L226 Difference]: Without dead ends: 13962 [2022-07-22 18:02:38,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:02:38,627 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 116 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:02:38,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 395 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:02:38,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13962 states. [2022-07-22 18:02:39,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13962 to 13960. [2022-07-22 18:02:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13960 states, 13959 states have (on average 1.4997492657067124) internal successors, (20935), 13959 states have internal predecessors, (20935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13960 states to 13960 states and 20935 transitions. [2022-07-22 18:02:39,610 INFO L78 Accepts]: Start accepts. Automaton has 13960 states and 20935 transitions. Word has length 71 [2022-07-22 18:02:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:02:39,613 INFO L495 AbstractCegarLoop]: Abstraction has 13960 states and 20935 transitions. [2022-07-22 18:02:39,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 13960 states and 20935 transitions. [2022-07-22 18:02:39,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-22 18:02:39,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:02:39,615 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:02:39,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:02:39,615 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:02:39,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:02:39,616 INFO L85 PathProgramCache]: Analyzing trace with hash -241201943, now seen corresponding path program 1 times [2022-07-22 18:02:39,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:02:39,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507894153] [2022-07-22 18:02:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:02:39,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:02:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:02:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:02:39,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:02:39,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507894153] [2022-07-22 18:02:39,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507894153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:02:39,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:02:39,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:02:39,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369803908] [2022-07-22 18:02:39,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:02:39,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:02:39,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:02:39,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:02:39,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:02:39,698 INFO L87 Difference]: Start difference. First operand 13960 states and 20935 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:02:41,330 INFO L93 Difference]: Finished difference Result 29162 states and 43112 transitions. [2022-07-22 18:02:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:02:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-22 18:02:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:02:41,484 INFO L225 Difference]: With dead ends: 29162 [2022-07-22 18:02:41,499 INFO L226 Difference]: Without dead ends: 29160 [2022-07-22 18:02:41,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:02:41,523 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 372 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:02:41,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 737 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:02:41,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29160 states. [2022-07-22 18:02:42,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29160 to 14920. [2022-07-22 18:02:42,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14920 states, 14919 states have (on average 1.4675916616395202) internal successors, (21895), 14919 states have internal predecessors, (21895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14920 states to 14920 states and 21895 transitions. [2022-07-22 18:02:42,882 INFO L78 Accepts]: Start accepts. Automaton has 14920 states and 21895 transitions. Word has length 71 [2022-07-22 18:02:42,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:02:42,883 INFO L495 AbstractCegarLoop]: Abstraction has 14920 states and 21895 transitions. [2022-07-22 18:02:42,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:42,884 INFO L276 IsEmpty]: Start isEmpty. Operand 14920 states and 21895 transitions. [2022-07-22 18:02:42,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 18:02:42,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:02:42,885 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:02:42,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:02:42,886 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:02:42,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:02:42,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1165253064, now seen corresponding path program 1 times [2022-07-22 18:02:42,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:02:42,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496100797] [2022-07-22 18:02:42,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:02:42,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:02:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:02:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:02:42,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:02:42,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496100797] [2022-07-22 18:02:42,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496100797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:02:42,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:02:42,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:02:42,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886750718] [2022-07-22 18:02:42,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:02:42,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:02:42,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:02:42,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:02:42,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:02:42,939 INFO L87 Difference]: Start difference. First operand 14920 states and 21895 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:43,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:02:43,930 INFO L93 Difference]: Finished difference Result 36446 states and 53547 transitions. [2022-07-22 18:02:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:02:43,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-07-22 18:02:43,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:02:43,985 INFO L225 Difference]: With dead ends: 36446 [2022-07-22 18:02:43,985 INFO L226 Difference]: Without dead ends: 21564 [2022-07-22 18:02:44,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:02:44,011 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 89 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:02:44,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 294 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:02:44,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21564 states. [2022-07-22 18:02:45,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21564 to 21418. [2022-07-22 18:02:45,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21418 states, 21417 states have (on average 1.4594481019750665) internal successors, (31257), 21417 states have internal predecessors, (31257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:45,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21418 states to 21418 states and 31257 transitions. [2022-07-22 18:02:45,340 INFO L78 Accepts]: Start accepts. Automaton has 21418 states and 31257 transitions. Word has length 72 [2022-07-22 18:02:45,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:02:45,340 INFO L495 AbstractCegarLoop]: Abstraction has 21418 states and 31257 transitions. [2022-07-22 18:02:45,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:02:45,340 INFO L276 IsEmpty]: Start isEmpty. Operand 21418 states and 31257 transitions. [2022-07-22 18:02:45,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 18:02:45,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:02:45,351 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 18:02:45,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:02:45,352 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:02:45,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:02:45,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1893321424, now seen corresponding path program 1 times [2022-07-22 18:02:45,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:02:45,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389621728] [2022-07-22 18:02:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:02:45,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:02:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:02:45,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:02:45,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:02:45,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389621728] [2022-07-22 18:02:45,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389621728] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 18:02:45,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609138276] [2022-07-22 18:02:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:02:45,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:02:45,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:02:45,535 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 18:02:45,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 18:02:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:02:45,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 18:02:45,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 18:02:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 18:02:45,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 18:02:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 18:02:46,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609138276] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 18:02:46,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 18:02:46,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 14 [2022-07-22 18:02:46,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580633909] [2022-07-22 18:02:46,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 18:02:46,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 18:02:46,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:02:46,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 18:02:46,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:02:46,184 INFO L87 Difference]: Start difference. First operand 21418 states and 31257 transitions. Second operand has 14 states, 14 states have (on average 20.642857142857142) internal successors, (289), 14 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:10,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:10,842 INFO L93 Difference]: Finished difference Result 281370 states and 409511 transitions. [2022-07-22 18:03:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-07-22 18:03:10,843 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.642857142857142) internal successors, (289), 14 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-07-22 18:03:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:11,633 INFO L225 Difference]: With dead ends: 281370 [2022-07-22 18:03:11,633 INFO L226 Difference]: Without dead ends: 260600 [2022-07-22 18:03:11,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3662 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1776, Invalid=7344, Unknown=0, NotChecked=0, Total=9120 [2022-07-22 18:03:11,722 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 7291 mSDsluCounter, 3658 mSDsCounter, 0 mSdLazyCounter, 2946 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7291 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 3119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:11,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7291 Valid, 4333 Invalid, 3119 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [173 Valid, 2946 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 18:03:11,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260600 states. [2022-07-22 18:03:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260600 to 146770. [2022-07-22 18:03:24,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146770 states, 146769 states have (on average 1.4430635897226254) internal successors, (211797), 146769 states have internal predecessors, (211797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146770 states to 146770 states and 211797 transitions. [2022-07-22 18:03:24,816 INFO L78 Accepts]: Start accepts. Automaton has 146770 states and 211797 transitions. Word has length 101 [2022-07-22 18:03:24,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:24,817 INFO L495 AbstractCegarLoop]: Abstraction has 146770 states and 211797 transitions. [2022-07-22 18:03:24,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.642857142857142) internal successors, (289), 14 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:24,817 INFO L276 IsEmpty]: Start isEmpty. Operand 146770 states and 211797 transitions. [2022-07-22 18:03:24,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 18:03:24,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:24,844 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 18:03:24,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 18:03:25,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 18:03:25,060 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:25,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:25,061 INFO L85 PathProgramCache]: Analyzing trace with hash 467391681, now seen corresponding path program 1 times [2022-07-22 18:03:25,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:25,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621187979] [2022-07-22 18:03:25,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:25,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:25,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:25,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621187979] [2022-07-22 18:03:25,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621187979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:25,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:25,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:25,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907362632] [2022-07-22 18:03:25,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:25,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:25,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:25,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:25,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:25,157 INFO L87 Difference]: Start difference. First operand 146770 states and 211797 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)