./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.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_opt-floodmax.5.3.ufo.BOUNDED-10.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 7311ea8eed1b76a77d129e75acc31171f325dda60148033cbbd15d9405b6e79a --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:07:22,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:07:22,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:07:22,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:07:22,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:07:22,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:07:22,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:07:22,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:07:22,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:07:22,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:07:22,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:07:22,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:07:22,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:07:22,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:07:22,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:07:22,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:07:22,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:07:22,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:07:22,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:07:22,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:07:22,877 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:07:22,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:07:22,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:07:22,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:07:22,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:07:22,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:07:22,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:07:22,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:07:22,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:07:22,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:07:22,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:07:22,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:07:22,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:07:22,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:07:22,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:07:22,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:07:22,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:07:22,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:07:22,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:07:22,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:07:22,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:07:22,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:07:22,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:07:22,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:07:22,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:07:22,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:07:22,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:07:22,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:07:22,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:07:22,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:07:22,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:07:22,925 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:07:22,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:07:22,926 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:07:22,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:07:22,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:07:22,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:07:22,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:07:22,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:07:22,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:07:22,927 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:07:22,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:07:22,929 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:07:22,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:07:22,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:07:22,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:07:22,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:07:22,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:07:22,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:07:22,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:07:22,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:07:22,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:07:22,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:07:22,931 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:07:22,931 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:07:22,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:07:22,932 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7311ea8eed1b76a77d129e75acc31171f325dda60148033cbbd15d9405b6e79a [2022-07-22 18:07:23,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:07:23,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:07:23,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:07:23,178 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:07:23,178 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:07:23,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2022-07-22 18:07:23,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0758d8776/b6f4b5e580fe429d89216cc4e9298b41/FLAGa17b7b69d [2022-07-22 18:07:23,689 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:07:23,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2022-07-22 18:07:23,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0758d8776/b6f4b5e580fe429d89216cc4e9298b41/FLAGa17b7b69d [2022-07-22 18:07:24,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0758d8776/b6f4b5e580fe429d89216cc4e9298b41 [2022-07-22 18:07:24,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:07:24,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:07:24,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:07:24,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:07:24,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:07:24,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:07:24" (1/1) ... [2022-07-22 18:07:24,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48dbf6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:24, skipping insertion in model container [2022-07-22 18:07:24,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:07:24" (1/1) ... [2022-07-22 18:07:24,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:07:24,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:07:24,487 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_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c[65471,65484] [2022-07-22 18:07:24,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:07:24,499 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:07:24,612 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_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c[65471,65484] [2022-07-22 18:07:24,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:07:24,626 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:07:24,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:24 WrapperNode [2022-07-22 18:07:24,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:07:24,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:07:24,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:07:24,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:07:24,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:24" (1/1) ... [2022-07-22 18:07:24,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:24" (1/1) ... [2022-07-22 18:07:24,727 INFO L137 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2131 [2022-07-22 18:07:24,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:07:24,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:07:24,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:07:24,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:07:24,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:24" (1/1) ... [2022-07-22 18:07:24,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:24" (1/1) ... [2022-07-22 18:07:24,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:24" (1/1) ... [2022-07-22 18:07:24,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:24" (1/1) ... [2022-07-22 18:07:24,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:24" (1/1) ... [2022-07-22 18:07:24,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:24" (1/1) ... [2022-07-22 18:07:24,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:24" (1/1) ... [2022-07-22 18:07:24,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:07:24,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:07:24,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:07:24,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:07:24,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:24" (1/1) ... [2022-07-22 18:07:24,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:07:24,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:07:24,869 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 18:07:24,893 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 18:07:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:07:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:07:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:07:24,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:07:25,127 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:07:25,146 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:07:26,620 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:07:26,633 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:07:26,634 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 18:07:26,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:07:26 BoogieIcfgContainer [2022-07-22 18:07:26,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:07:26,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:07:26,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:07:26,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:07:26,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:07:24" (1/3) ... [2022-07-22 18:07:26,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cf92d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:07:26, skipping insertion in model container [2022-07-22 18:07:26,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:24" (2/3) ... [2022-07-22 18:07:26,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cf92d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:07:26, skipping insertion in model container [2022-07-22 18:07:26,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:07:26" (3/3) ... [2022-07-22 18:07:26,645 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2022-07-22 18:07:26,658 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:07:26,658 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:07:26,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:07:26,723 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@233891a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6e95d6b8 [2022-07-22 18:07:26,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:07:26,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 736 states, 734 states have (on average 1.8501362397820162) internal successors, (1358), 735 states have internal predecessors, (1358), 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 18:07:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-22 18:07:26,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:26,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:26,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:26,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:26,772 INFO L85 PathProgramCache]: Analyzing trace with hash -388227635, now seen corresponding path program 1 times [2022-07-22 18:07:26,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:26,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536366057] [2022-07-22 18:07:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:26,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:27,197 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 18:07:27,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:27,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536366057] [2022-07-22 18:07:27,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536366057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:27,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:27,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 18:07:27,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569048943] [2022-07-22 18:07:27,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:27,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 18:07:27,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:27,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 18:07:27,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 18:07:27,236 INFO L87 Difference]: Start difference. First operand has 736 states, 734 states have (on average 1.8501362397820162) internal successors, (1358), 735 states have internal predecessors, (1358), 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 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 18:07:27,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:27,303 INFO L93 Difference]: Finished difference Result 922 states and 1680 transitions. [2022-07-22 18:07:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 18:07:27,309 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 153 [2022-07-22 18:07:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:27,331 INFO L225 Difference]: With dead ends: 922 [2022-07-22 18:07:27,331 INFO L226 Difference]: Without dead ends: 732 [2022-07-22 18:07:27,335 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 18:07:27,339 INFO L413 NwaCegarLoop]: 1355 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, 1355 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 18:07:27,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:07:27,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-07-22 18:07:27,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2022-07-22 18:07:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.8481532147742818) internal successors, (1351), 731 states have internal predecessors, (1351), 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 18:07:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1351 transitions. [2022-07-22 18:07:27,417 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1351 transitions. Word has length 153 [2022-07-22 18:07:27,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:27,418 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 1351 transitions. [2022-07-22 18:07:27,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 18:07:27,419 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1351 transitions. [2022-07-22 18:07:27,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-22 18:07:27,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:27,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:27,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:07:27,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:27,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:27,429 INFO L85 PathProgramCache]: Analyzing trace with hash -897700725, now seen corresponding path program 1 times [2022-07-22 18:07:27,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:27,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752641054] [2022-07-22 18:07:27,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:27,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:27,653 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 18:07:27,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:27,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752641054] [2022-07-22 18:07:27,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752641054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:27,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:27,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:07:27,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022936564] [2022-07-22 18:07:27,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:27,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:07:27,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:07:27,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:07:27,658 INFO L87 Difference]: Start difference. First operand 732 states and 1351 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 18:07:27,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:27,813 INFO L93 Difference]: Finished difference Result 917 states and 1670 transitions. [2022-07-22 18:07:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:07:27,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 153 [2022-07-22 18:07:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:27,818 INFO L225 Difference]: With dead ends: 917 [2022-07-22 18:07:27,818 INFO L226 Difference]: Without dead ends: 732 [2022-07-22 18:07:27,820 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 18:07:27,821 INFO L413 NwaCegarLoop]: 1349 mSDtfsCounter, 3 mSDsluCounter, 3979 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5328 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:07:27,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5328 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:07:27,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-07-22 18:07:27,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2022-07-22 18:07:27,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.759233926128591) internal successors, (1286), 731 states have internal predecessors, (1286), 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 18:07:27,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1286 transitions. [2022-07-22 18:07:27,878 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1286 transitions. Word has length 153 [2022-07-22 18:07:27,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:27,879 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 1286 transitions. [2022-07-22 18:07:27,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 18:07:27,879 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1286 transitions. [2022-07-22 18:07:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-22 18:07:27,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:27,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:27,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:07:27,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:27,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:27,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1598055145, now seen corresponding path program 1 times [2022-07-22 18:07:27,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:27,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449126916] [2022-07-22 18:07:27,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:27,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:28,152 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 18:07:28,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:28,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449126916] [2022-07-22 18:07:28,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449126916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:28,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:28,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:07:28,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891860033] [2022-07-22 18:07:28,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:28,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:07:28,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:28,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:07:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:07:28,157 INFO L87 Difference]: Start difference. First operand 732 states and 1286 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 18:07:28,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:28,228 INFO L93 Difference]: Finished difference Result 1080 states and 1890 transitions. [2022-07-22 18:07:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:07:28,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 217 [2022-07-22 18:07:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:28,234 INFO L225 Difference]: With dead ends: 1080 [2022-07-22 18:07:28,234 INFO L226 Difference]: Without dead ends: 899 [2022-07-22 18:07:28,236 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 18:07:28,237 INFO L413 NwaCegarLoop]: 1285 mSDtfsCounter, 281 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:07:28,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 2502 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:07:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-07-22 18:07:28,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 897. [2022-07-22 18:07:28,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 1.7511160714285714) internal successors, (1569), 896 states have internal predecessors, (1569), 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 18:07:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1569 transitions. [2022-07-22 18:07:28,279 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1569 transitions. Word has length 217 [2022-07-22 18:07:28,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:28,280 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1569 transitions. [2022-07-22 18:07:28,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 18:07:28,280 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1569 transitions. [2022-07-22 18:07:28,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-22 18:07:28,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:28,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:28,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:07:28,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:28,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:28,285 INFO L85 PathProgramCache]: Analyzing trace with hash 741252945, now seen corresponding path program 1 times [2022-07-22 18:07:28,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:28,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98794601] [2022-07-22 18:07:28,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:28,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:28,439 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 18:07:28,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:28,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98794601] [2022-07-22 18:07:28,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98794601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:28,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:28,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:07:28,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839516938] [2022-07-22 18:07:28,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:28,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:07:28,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:28,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:07:28,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:07:28,442 INFO L87 Difference]: Start difference. First operand 897 states and 1569 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 18:07:28,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:28,480 INFO L93 Difference]: Finished difference Result 1565 states and 2721 transitions. [2022-07-22 18:07:28,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:07:28,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 221 [2022-07-22 18:07:28,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:28,489 INFO L225 Difference]: With dead ends: 1565 [2022-07-22 18:07:28,490 INFO L226 Difference]: Without dead ends: 1219 [2022-07-22 18:07:28,495 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 18:07:28,498 INFO L413 NwaCegarLoop]: 1284 mSDtfsCounter, 281 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:07:28,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 2510 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:07:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-07-22 18:07:28,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1217. [2022-07-22 18:07:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1216 states have (on average 1.743421052631579) internal successors, (2120), 1216 states have internal predecessors, (2120), 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 18:07:28,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2120 transitions. [2022-07-22 18:07:28,562 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2120 transitions. Word has length 221 [2022-07-22 18:07:28,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:28,563 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 2120 transitions. [2022-07-22 18:07:28,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 18:07:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2120 transitions. [2022-07-22 18:07:28,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-22 18:07:28,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:28,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:28,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:07:28,568 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:28,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:28,569 INFO L85 PathProgramCache]: Analyzing trace with hash -674300039, now seen corresponding path program 1 times [2022-07-22 18:07:28,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:28,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086326586] [2022-07-22 18:07:28,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:28,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:28,693 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 18:07:28,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:28,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086326586] [2022-07-22 18:07:28,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086326586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:28,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:28,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:07:28,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046260858] [2022-07-22 18:07:28,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:28,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:07:28,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:28,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:07:28,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:07:28,697 INFO L87 Difference]: Start difference. First operand 1217 states and 2120 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 18:07:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:28,739 INFO L93 Difference]: Finished difference Result 2501 states and 4330 transitions. [2022-07-22 18:07:28,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:07:28,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 225 [2022-07-22 18:07:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:28,748 INFO L225 Difference]: With dead ends: 2501 [2022-07-22 18:07:28,749 INFO L226 Difference]: Without dead ends: 1835 [2022-07-22 18:07:28,750 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 18:07:28,751 INFO L413 NwaCegarLoop]: 1284 mSDtfsCounter, 273 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2511 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:07:28,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 2511 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:07:28,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2022-07-22 18:07:28,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1833. [2022-07-22 18:07:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1832 states have (on average 1.7336244541484715) internal successors, (3176), 1832 states have internal predecessors, (3176), 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 18:07:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 3176 transitions. [2022-07-22 18:07:28,831 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 3176 transitions. Word has length 225 [2022-07-22 18:07:28,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:28,832 INFO L495 AbstractCegarLoop]: Abstraction has 1833 states and 3176 transitions. [2022-07-22 18:07:28,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 18:07:28,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 3176 transitions. [2022-07-22 18:07:28,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-22 18:07:28,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:28,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:28,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:07:28,839 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:28,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:28,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1433109345, now seen corresponding path program 1 times [2022-07-22 18:07:28,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:28,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468520000] [2022-07-22 18:07:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:28,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:28,992 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 18:07:28,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:28,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468520000] [2022-07-22 18:07:28,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468520000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:28,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:28,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:07:28,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142020399] [2022-07-22 18:07:28,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:28,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:07:28,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:28,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:07:28,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:07:28,995 INFO L87 Difference]: Start difference. First operand 1833 states and 3176 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 18:07:29,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:29,049 INFO L93 Difference]: Finished difference Result 4301 states and 7410 transitions. [2022-07-22 18:07:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:07:29,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 229 [2022-07-22 18:07:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:29,062 INFO L225 Difference]: With dead ends: 4301 [2022-07-22 18:07:29,063 INFO L226 Difference]: Without dead ends: 3019 [2022-07-22 18:07:29,065 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 18:07:29,066 INFO L413 NwaCegarLoop]: 1284 mSDtfsCounter, 265 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:07:29,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 2512 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:07:29,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3019 states. [2022-07-22 18:07:29,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3019 to 3017. [2022-07-22 18:07:29,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 3016 states have (on average 1.7228116710875332) internal successors, (5196), 3016 states have internal predecessors, (5196), 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 18:07:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 5196 transitions. [2022-07-22 18:07:29,140 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 5196 transitions. Word has length 229 [2022-07-22 18:07:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:29,141 INFO L495 AbstractCegarLoop]: Abstraction has 3017 states and 5196 transitions. [2022-07-22 18:07:29,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 18:07:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 5196 transitions. [2022-07-22 18:07:29,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-22 18:07:29,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:29,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:29,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:07:29,147 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:29,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:29,147 INFO L85 PathProgramCache]: Analyzing trace with hash 792603401, now seen corresponding path program 1 times [2022-07-22 18:07:29,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:29,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134837949] [2022-07-22 18:07:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:29,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:29,283 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 18:07:29,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:29,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134837949] [2022-07-22 18:07:29,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134837949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:29,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:29,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:07:29,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700040692] [2022-07-22 18:07:29,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:29,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:07:29,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:29,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:07:29,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:07:29,287 INFO L87 Difference]: Start difference. First operand 3017 states and 5196 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 18:07:29,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:29,368 INFO L93 Difference]: Finished difference Result 7757 states and 13294 transitions. [2022-07-22 18:07:29,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:07:29,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 233 [2022-07-22 18:07:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:29,391 INFO L225 Difference]: With dead ends: 7757 [2022-07-22 18:07:29,392 INFO L226 Difference]: Without dead ends: 5291 [2022-07-22 18:07:29,397 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 18:07:29,398 INFO L413 NwaCegarLoop]: 1284 mSDtfsCounter, 257 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:07:29,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 2513 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:07:29,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2022-07-22 18:07:29,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 5289. [2022-07-22 18:07:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5289 states, 5288 states have (on average 1.7118003025718609) internal successors, (9052), 5288 states have internal predecessors, (9052), 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 18:07:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 9052 transitions. [2022-07-22 18:07:29,538 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 9052 transitions. Word has length 233 [2022-07-22 18:07:29,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:29,539 INFO L495 AbstractCegarLoop]: Abstraction has 5289 states and 9052 transitions. [2022-07-22 18:07:29,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 18:07:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 9052 transitions. [2022-07-22 18:07:29,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-22 18:07:29,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:29,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:29,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:07:29,545 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:29,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:29,546 INFO L85 PathProgramCache]: Analyzing trace with hash 108066417, now seen corresponding path program 1 times [2022-07-22 18:07:29,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:29,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261036046] [2022-07-22 18:07:29,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:29,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:29,710 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 18:07:29,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:29,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261036046] [2022-07-22 18:07:29,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261036046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:29,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:29,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:07:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721158977] [2022-07-22 18:07:29,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:29,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:07:29,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:07:29,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:07:29,713 INFO L87 Difference]: Start difference. First operand 5289 states and 9052 transitions. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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 18:07:30,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:30,475 INFO L93 Difference]: Finished difference Result 32125 states and 55126 transitions. [2022-07-22 18:07:30,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 18:07:30,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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 237 [2022-07-22 18:07:30,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:30,565 INFO L225 Difference]: With dead ends: 32125 [2022-07-22 18:07:30,566 INFO L226 Difference]: Without dead ends: 27387 [2022-07-22 18:07:30,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:07:30,587 INFO L413 NwaCegarLoop]: 1278 mSDtfsCounter, 3267 mSDsluCounter, 11538 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3267 SdHoareTripleChecker+Valid, 12816 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:07:30,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3267 Valid, 12816 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:07:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27387 states. [2022-07-22 18:07:31,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27387 to 9848. [2022-07-22 18:07:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9848 states, 9847 states have (on average 1.7079313496496396) internal successors, (16818), 9847 states have internal predecessors, (16818), 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 18:07:31,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9848 states to 9848 states and 16818 transitions. [2022-07-22 18:07:31,192 INFO L78 Accepts]: Start accepts. Automaton has 9848 states and 16818 transitions. Word has length 237 [2022-07-22 18:07:31,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:31,194 INFO L495 AbstractCegarLoop]: Abstraction has 9848 states and 16818 transitions. [2022-07-22 18:07:31,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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 18:07:31,195 INFO L276 IsEmpty]: Start isEmpty. Operand 9848 states and 16818 transitions. [2022-07-22 18:07:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-22 18:07:31,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:31,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:31,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:07:31,207 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:31,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:31,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1083679653, now seen corresponding path program 1 times [2022-07-22 18:07:31,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:31,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389343702] [2022-07-22 18:07:31,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:31,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:31,357 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 18:07:31,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:31,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389343702] [2022-07-22 18:07:31,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389343702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:31,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:31,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:07:31,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218360130] [2022-07-22 18:07:31,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:31,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:07:31,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:31,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:07:31,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:07:31,360 INFO L87 Difference]: Start difference. First operand 9848 states and 16818 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 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 18:07:31,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:31,747 INFO L93 Difference]: Finished difference Result 28807 states and 49311 transitions. [2022-07-22 18:07:31,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:07:31,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 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 238 [2022-07-22 18:07:31,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:31,903 INFO L225 Difference]: With dead ends: 28807 [2022-07-22 18:07:31,903 INFO L226 Difference]: Without dead ends: 19510 [2022-07-22 18:07:31,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:07:31,919 INFO L413 NwaCegarLoop]: 1283 mSDtfsCounter, 916 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 3847 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:07:31,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 3847 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:07:31,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19510 states. [2022-07-22 18:07:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19510 to 14646. [2022-07-22 18:07:32,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14646 states, 14645 states have (on average 1.7081597814953908) internal successors, (25016), 14645 states have internal predecessors, (25016), 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 18:07:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14646 states to 14646 states and 25016 transitions. [2022-07-22 18:07:32,472 INFO L78 Accepts]: Start accepts. Automaton has 14646 states and 25016 transitions. Word has length 238 [2022-07-22 18:07:32,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:32,476 INFO L495 AbstractCegarLoop]: Abstraction has 14646 states and 25016 transitions. [2022-07-22 18:07:32,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 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 18:07:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 14646 states and 25016 transitions. [2022-07-22 18:07:32,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-22 18:07:32,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:32,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:32,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:07:32,487 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:32,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:32,488 INFO L85 PathProgramCache]: Analyzing trace with hash -584977657, now seen corresponding path program 1 times [2022-07-22 18:07:32,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:32,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528481092] [2022-07-22 18:07:32,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:32,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:32,590 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 18:07:32,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:32,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528481092] [2022-07-22 18:07:32,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528481092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:32,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:32,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:07:32,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502512515] [2022-07-22 18:07:32,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:32,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:07:32,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:32,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:07:32,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:07:32,593 INFO L87 Difference]: Start difference. First operand 14646 states and 25016 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 18:07:33,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:33,101 INFO L93 Difference]: Finished difference Result 32309 states and 55290 transitions. [2022-07-22 18:07:33,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:07:33,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 239 [2022-07-22 18:07:33,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:33,153 INFO L225 Difference]: With dead ends: 32309 [2022-07-22 18:07:33,154 INFO L226 Difference]: Without dead ends: 22549 [2022-07-22 18:07:33,172 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 18:07:33,173 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 290 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2771 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 18:07:33,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 2771 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:07:33,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22549 states. [2022-07-22 18:07:33,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22549 to 22547. [2022-07-22 18:07:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22547 states, 22546 states have (on average 1.7054466424199415) internal successors, (38451), 22546 states have internal predecessors, (38451), 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 18:07:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22547 states to 22547 states and 38451 transitions. [2022-07-22 18:07:33,984 INFO L78 Accepts]: Start accepts. Automaton has 22547 states and 38451 transitions. Word has length 239 [2022-07-22 18:07:33,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:33,985 INFO L495 AbstractCegarLoop]: Abstraction has 22547 states and 38451 transitions. [2022-07-22 18:07:33,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 18:07:33,985 INFO L276 IsEmpty]: Start isEmpty. Operand 22547 states and 38451 transitions. [2022-07-22 18:07:33,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-22 18:07:33,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:33,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:33,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:07:33,992 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:33,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:33,993 INFO L85 PathProgramCache]: Analyzing trace with hash -259310295, now seen corresponding path program 1 times [2022-07-22 18:07:33,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:33,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774573658] [2022-07-22 18:07:33,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:33,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:34,128 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 18:07:34,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:34,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774573658] [2022-07-22 18:07:34,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774573658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:34,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:34,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:07:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611196001] [2022-07-22 18:07:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:34,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:07:34,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:07:34,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:07:34,132 INFO L87 Difference]: Start difference. First operand 22547 states and 38451 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 18:07:34,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:34,827 INFO L93 Difference]: Finished difference Result 43467 states and 74134 transitions. [2022-07-22 18:07:34,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:07:34,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 239 [2022-07-22 18:07:34,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:34,898 INFO L225 Difference]: With dead ends: 43467 [2022-07-22 18:07:34,899 INFO L226 Difference]: Without dead ends: 31817 [2022-07-22 18:07:34,916 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 18:07:34,917 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 282 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2749 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 18:07:34,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2749 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:07:34,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31817 states. [2022-07-22 18:07:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31817 to 31815. [2022-07-22 18:07:35,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31815 states, 31814 states have (on average 1.7007292386999435) internal successors, (54107), 31814 states have internal predecessors, (54107), 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 18:07:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31815 states to 31815 states and 54107 transitions. [2022-07-22 18:07:35,806 INFO L78 Accepts]: Start accepts. Automaton has 31815 states and 54107 transitions. Word has length 239 [2022-07-22 18:07:35,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:35,806 INFO L495 AbstractCegarLoop]: Abstraction has 31815 states and 54107 transitions. [2022-07-22 18:07:35,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 18:07:35,808 INFO L276 IsEmpty]: Start isEmpty. Operand 31815 states and 54107 transitions. [2022-07-22 18:07:35,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-22 18:07:35,812 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:35,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:35,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:07:35,813 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:35,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:35,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1955219721, now seen corresponding path program 1 times [2022-07-22 18:07:35,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:35,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675934773] [2022-07-22 18:07:35,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:35,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:35,925 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 18:07:35,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:35,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675934773] [2022-07-22 18:07:35,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675934773] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:35,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:35,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:07:35,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509973190] [2022-07-22 18:07:35,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:35,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:07:35,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:35,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:07:35,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:07:35,928 INFO L87 Difference]: Start difference. First operand 31815 states and 54107 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 18:07:36,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:36,952 INFO L93 Difference]: Finished difference Result 61263 states and 104214 transitions. [2022-07-22 18:07:36,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:07:36,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 239 [2022-07-22 18:07:36,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:37,179 INFO L225 Difference]: With dead ends: 61263 [2022-07-22 18:07:37,179 INFO L226 Difference]: Without dead ends: 44749 [2022-07-22 18:07:37,212 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 18:07:37,213 INFO L413 NwaCegarLoop]: 1480 mSDtfsCounter, 274 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2718 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 18:07:37,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 2718 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:07:37,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44749 states. [2022-07-22 18:07:38,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44749 to 44747. [2022-07-22 18:07:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44747 states, 44746 states have (on average 1.69568229562419) internal successors, (75875), 44746 states have internal predecessors, (75875), 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 18:07:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44747 states to 44747 states and 75875 transitions. [2022-07-22 18:07:38,400 INFO L78 Accepts]: Start accepts. Automaton has 44747 states and 75875 transitions. Word has length 239 [2022-07-22 18:07:38,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:38,401 INFO L495 AbstractCegarLoop]: Abstraction has 44747 states and 75875 transitions. [2022-07-22 18:07:38,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 18:07:38,401 INFO L276 IsEmpty]: Start isEmpty. Operand 44747 states and 75875 transitions. [2022-07-22 18:07:38,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-22 18:07:38,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:38,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:38,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:07:38,406 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:38,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:38,406 INFO L85 PathProgramCache]: Analyzing trace with hash 583218409, now seen corresponding path program 1 times [2022-07-22 18:07:38,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:38,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136250661] [2022-07-22 18:07:38,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:38,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:38,506 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 18:07:38,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:38,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136250661] [2022-07-22 18:07:38,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136250661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:38,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:38,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:07:38,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018796540] [2022-07-22 18:07:38,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:38,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:07:38,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:38,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:07:38,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:07:38,509 INFO L87 Difference]: Start difference. First operand 44747 states and 75875 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 18:07:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:39,801 INFO L93 Difference]: Finished difference Result 86027 states and 145918 transitions. [2022-07-22 18:07:39,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:07:39,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 239 [2022-07-22 18:07:39,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:39,935 INFO L225 Difference]: With dead ends: 86027 [2022-07-22 18:07:39,936 INFO L226 Difference]: Without dead ends: 62697 [2022-07-22 18:07:39,968 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 18:07:39,969 INFO L413 NwaCegarLoop]: 1448 mSDtfsCounter, 266 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2687 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 18:07:39,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 2687 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:07:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62697 states. [2022-07-22 18:07:41,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62697 to 62695. [2022-07-22 18:07:41,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62695 states, 62694 states have (on average 1.6901298369859954) internal successors, (105961), 62694 states have internal predecessors, (105961), 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 18:07:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62695 states to 62695 states and 105961 transitions. [2022-07-22 18:07:41,574 INFO L78 Accepts]: Start accepts. Automaton has 62695 states and 105961 transitions. Word has length 239 [2022-07-22 18:07:41,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:41,575 INFO L495 AbstractCegarLoop]: Abstraction has 62695 states and 105961 transitions. [2022-07-22 18:07:41,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 18:07:41,575 INFO L276 IsEmpty]: Start isEmpty. Operand 62695 states and 105961 transitions. [2022-07-22 18:07:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-22 18:07:41,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:41,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:41,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:07:41,579 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:41,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:41,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1125515465, now seen corresponding path program 1 times [2022-07-22 18:07:41,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:41,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486521375] [2022-07-22 18:07:41,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:41,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:41,679 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 18:07:41,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:41,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486521375] [2022-07-22 18:07:41,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486521375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:41,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:41,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:07:41,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390637754] [2022-07-22 18:07:41,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:41,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:07:41,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:41,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:07:41,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:07:41,683 INFO L87 Difference]: Start difference. First operand 62695 states and 105961 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 18:07:43,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:43,315 INFO L93 Difference]: Finished difference Result 120283 states and 203358 transitions. [2022-07-22 18:07:43,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:07:43,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 239 [2022-07-22 18:07:43,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:43,507 INFO L225 Difference]: With dead ends: 120283 [2022-07-22 18:07:43,508 INFO L226 Difference]: Without dead ends: 87449 [2022-07-22 18:07:43,559 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 18:07:43,561 INFO L413 NwaCegarLoop]: 1416 mSDtfsCounter, 258 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2656 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 18:07:43,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 2656 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:07:43,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87449 states. [2022-07-22 18:07:45,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87449 to 87447. [2022-07-22 18:07:45,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87447 states, 87446 states have (on average 1.6838849118313015) internal successors, (147249), 87446 states have internal predecessors, (147249), 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 18:07:45,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87447 states to 87447 states and 147249 transitions. [2022-07-22 18:07:45,667 INFO L78 Accepts]: Start accepts. Automaton has 87447 states and 147249 transitions. Word has length 239 [2022-07-22 18:07:45,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:45,667 INFO L495 AbstractCegarLoop]: Abstraction has 87447 states and 147249 transitions. [2022-07-22 18:07:45,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 18:07:45,668 INFO L276 IsEmpty]: Start isEmpty. Operand 87447 states and 147249 transitions. [2022-07-22 18:07:45,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-22 18:07:45,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:45,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:45,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:07:45,677 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:45,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:45,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1431923240, now seen corresponding path program 1 times [2022-07-22 18:07:45,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:45,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495644843] [2022-07-22 18:07:45,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:45,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:45,778 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 18:07:45,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:45,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495644843] [2022-07-22 18:07:45,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495644843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:45,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:45,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:07:45,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323046061] [2022-07-22 18:07:45,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:45,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:07:45,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:45,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:07:45,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:07:45,781 INFO L87 Difference]: Start difference. First operand 87447 states and 147249 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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 18:07:49,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:07:49,741 INFO L93 Difference]: Finished difference Result 288053 states and 485347 transitions. [2022-07-22 18:07:49,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:07:49,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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 239 [2022-07-22 18:07:49,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:07:50,361 INFO L225 Difference]: With dead ends: 288053 [2022-07-22 18:07:50,361 INFO L226 Difference]: Without dead ends: 201239 [2022-07-22 18:07:50,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:07:50,440 INFO L413 NwaCegarLoop]: 1279 mSDtfsCounter, 914 mSDsluCounter, 2804 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 4083 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:07:50,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 4083 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:07:50,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201239 states. [2022-07-22 18:07:54,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201239 to 144074. [2022-07-22 18:07:54,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144074 states, 144073 states have (on average 1.6789266552372755) internal successors, (241888), 144073 states have internal predecessors, (241888), 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 18:07:54,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144074 states to 144074 states and 241888 transitions. [2022-07-22 18:07:54,933 INFO L78 Accepts]: Start accepts. Automaton has 144074 states and 241888 transitions. Word has length 239 [2022-07-22 18:07:54,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:07:54,933 INFO L495 AbstractCegarLoop]: Abstraction has 144074 states and 241888 transitions. [2022-07-22 18:07:54,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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 18:07:54,934 INFO L276 IsEmpty]: Start isEmpty. Operand 144074 states and 241888 transitions. [2022-07-22 18:07:54,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-22 18:07:54,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:07:54,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:54,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:07:54,937 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:07:54,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:07:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash -488423108, now seen corresponding path program 1 times [2022-07-22 18:07:54,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:07:54,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583478983] [2022-07-22 18:07:54,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:07:54,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:07:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:07:55,065 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 18:07:55,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:07:55,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583478983] [2022-07-22 18:07:55,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583478983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:07:55,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:07:55,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:07:55,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102746648] [2022-07-22 18:07:55,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:07:55,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:07:55,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:07:55,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:07:55,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:07:55,070 INFO L87 Difference]: Start difference. First operand 144074 states and 241888 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 18:08:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:08:01,837 INFO L93 Difference]: Finished difference Result 474383 states and 797005 transitions. [2022-07-22 18:08:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:08:01,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 240 [2022-07-22 18:08:01,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:08:02,662 INFO L225 Difference]: With dead ends: 474383 [2022-07-22 18:08:02,662 INFO L226 Difference]: Without dead ends: 330942 [2022-07-22 18:08:02,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:08:02,795 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 912 mSDsluCounter, 2678 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:08:02,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 3952 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:08:03,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330942 states.