./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.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 d869d36578fc433cb3bcbc293e270e4f10048025e6637a1ca792146288a88a6e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:57:01,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:57:01,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:57:01,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:57:01,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:57:01,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:57:01,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:57:01,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:57:01,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:57:01,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:57:01,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:57:01,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:57:01,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:57:01,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:57:01,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:57:01,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:57:01,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:57:01,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:57:01,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:57:01,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:57:01,094 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:57:01,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:57:01,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:57:01,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:57:01,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:57:01,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:57:01,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:57:01,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:57:01,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:57:01,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:57:01,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:57:01,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:57:01,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:57:01,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:57:01,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:57:01,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:57:01,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:57:01,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:57:01,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:57:01,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:57:01,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:57:01,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:57:01,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:57:01,120 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:57:01,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:57:01,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:57:01,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:57:01,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:57:01,121 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:57:01,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:57:01,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:57:01,122 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:57:01,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:57:01,122 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:57:01,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:57:01,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:57:01,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:57:01,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:57:01,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:57:01,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:57:01,123 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:57:01,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:57:01,124 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:57:01,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:57:01,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:57:01,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:57:01,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:57:01,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:57:01,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:57:01,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:57:01,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:57:01,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:57:01,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:57:01,125 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:57:01,125 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:57:01,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:57:01,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d869d36578fc433cb3bcbc293e270e4f10048025e6637a1ca792146288a88a6e [2022-07-12 06:57:01,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:57:01,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:57:01,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:57:01,320 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:57:01,321 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:57:01,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-12 06:57:01,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/513ccf927/52cfc726207e4bed9301c8c56855cb4e/FLAGda7d14708 [2022-07-12 06:57:01,785 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:57:01,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-12 06:57:01,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/513ccf927/52cfc726207e4bed9301c8c56855cb4e/FLAGda7d14708 [2022-07-12 06:57:01,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/513ccf927/52cfc726207e4bed9301c8c56855cb4e [2022-07-12 06:57:01,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:57:01,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:57:01,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:57:01,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:57:01,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:57:01,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:57:01" (1/1) ... [2022-07-12 06:57:01,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386c322c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:57:01, skipping insertion in model container [2022-07-12 06:57:01,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:57:01" (1/1) ... [2022-07-12 06:57:01,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:57:01,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:57:02,190 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-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24323,24336] [2022-07-12 06:57:02,215 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-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28161,28174] [2022-07-12 06:57:02,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:57:02,294 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:57:02,463 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-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24323,24336] [2022-07-12 06:57:02,485 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-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28161,28174] [2022-07-12 06:57:02,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:57:02,593 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:57:02,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:57:02 WrapperNode [2022-07-12 06:57:02,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:57:02,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:57:02,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:57:02,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:57:02,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:57:02" (1/1) ... [2022-07-12 06:57:02,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:57:02" (1/1) ... [2022-07-12 06:57:02,719 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2380 [2022-07-12 06:57:02,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:57:02,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:57:02,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:57:02,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:57:02,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:57:02" (1/1) ... [2022-07-12 06:57:02,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:57:02" (1/1) ... [2022-07-12 06:57:02,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:57:02" (1/1) ... [2022-07-12 06:57:02,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:57:02" (1/1) ... [2022-07-12 06:57:02,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:57:02" (1/1) ... [2022-07-12 06:57:02,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:57:02" (1/1) ... [2022-07-12 06:57:02,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:57:02" (1/1) ... [2022-07-12 06:57:02,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:57:02,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:57:02,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:57:02,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:57:02,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:57:02" (1/1) ... [2022-07-12 06:57:02,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:57:02,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:57:02,842 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) [2022-07-12 06:57:02,848 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 [2022-07-12 06:57:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:57:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:57:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:57:02,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:57:03,018 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:57:03,033 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:57:04,044 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:57:04,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:57:04,055 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 06:57:04,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:57:04 BoogieIcfgContainer [2022-07-12 06:57:04,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:57:04,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:57:04,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:57:04,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:57:04,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:57:01" (1/3) ... [2022-07-12 06:57:04,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691c054e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:57:04, skipping insertion in model container [2022-07-12 06:57:04,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:57:02" (2/3) ... [2022-07-12 06:57:04,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691c054e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:57:04, skipping insertion in model container [2022-07-12 06:57:04,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:57:04" (3/3) ... [2022-07-12 06:57:04,063 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-12 06:57:04,073 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:57:04,073 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 06:57:04,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:57:04,121 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@26151077, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4a7b9bf4 [2022-07-12 06:57:04,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 06:57:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 627 states, 624 states have (on average 1.8028846153846154) internal successors, (1125), 626 states have internal predecessors, (1125), 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) [2022-07-12 06:57:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-12 06:57:04,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:04,153 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] [2022-07-12 06:57:04,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:57:04,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:04,158 INFO L85 PathProgramCache]: Analyzing trace with hash 761689277, now seen corresponding path program 1 times [2022-07-12 06:57:04,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:04,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194663149] [2022-07-12 06:57:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:04,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:04,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:04,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194663149] [2022-07-12 06:57:04,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194663149] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:04,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:04,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:57:04,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168228731] [2022-07-12 06:57:04,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:04,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:57:04,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:04,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:57:04,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:57:04,866 INFO L87 Difference]: Start difference. First operand has 627 states, 624 states have (on average 1.8028846153846154) internal successors, (1125), 626 states have internal predecessors, (1125), 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 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2022-07-12 06:57:05,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:05,123 INFO L93 Difference]: Finished difference Result 1845 states and 3314 transitions. [2022-07-12 06:57:05,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:57:05,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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 235 [2022-07-12 06:57:05,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:05,143 INFO L225 Difference]: With dead ends: 1845 [2022-07-12 06:57:05,143 INFO L226 Difference]: Without dead ends: 1223 [2022-07-12 06:57:05,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:57:05,152 INFO L413 NwaCegarLoop]: 1820 mSDtfsCounter, 2458 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2458 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:05,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2458 Valid, 2883 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:57:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-07-12 06:57:05,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1188. [2022-07-12 06:57:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1186 states have (on average 1.5564924114671164) internal successors, (1846), 1187 states have internal predecessors, (1846), 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) [2022-07-12 06:57:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1846 transitions. [2022-07-12 06:57:05,275 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1846 transitions. Word has length 235 [2022-07-12 06:57:05,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:05,277 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1846 transitions. [2022-07-12 06:57:05,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2022-07-12 06:57:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1846 transitions. [2022-07-12 06:57:05,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-12 06:57:05,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:05,286 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] [2022-07-12 06:57:05,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:57:05,286 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:57:05,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:05,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1859701747, now seen corresponding path program 1 times [2022-07-12 06:57:05,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:05,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628954673] [2022-07-12 06:57:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:05,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:05,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:05,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628954673] [2022-07-12 06:57:05,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628954673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:05,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:05,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:57:05,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41130142] [2022-07-12 06:57:05,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:05,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:57:05,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:05,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:57:05,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:57:05,478 INFO L87 Difference]: Start difference. First operand 1188 states and 1846 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 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) [2022-07-12 06:57:05,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:05,641 INFO L93 Difference]: Finished difference Result 3398 states and 5248 transitions. [2022-07-12 06:57:05,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:57:05,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 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 [2022-07-12 06:57:05,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:05,650 INFO L225 Difference]: With dead ends: 3398 [2022-07-12 06:57:05,650 INFO L226 Difference]: Without dead ends: 2335 [2022-07-12 06:57:05,653 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 [2022-07-12 06:57:05,654 INFO L413 NwaCegarLoop]: 1830 mSDtfsCounter, 839 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:05,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 2755 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:57:05,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2022-07-12 06:57:05,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2302. [2022-07-12 06:57:05,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 2300 states have (on average 1.548695652173913) internal successors, (3562), 2301 states have internal predecessors, (3562), 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) [2022-07-12 06:57:05,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3562 transitions. [2022-07-12 06:57:05,789 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3562 transitions. Word has length 237 [2022-07-12 06:57:05,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:05,791 INFO L495 AbstractCegarLoop]: Abstraction has 2302 states and 3562 transitions. [2022-07-12 06:57:05,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 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) [2022-07-12 06:57:05,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3562 transitions. [2022-07-12 06:57:05,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-12 06:57:05,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:05,798 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] [2022-07-12 06:57:05,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:57:05,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:57:05,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:05,800 INFO L85 PathProgramCache]: Analyzing trace with hash 839192398, now seen corresponding path program 1 times [2022-07-12 06:57:05,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:05,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564209617] [2022-07-12 06:57:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:05,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:05,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:05,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564209617] [2022-07-12 06:57:05,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564209617] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:05,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:05,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:57:05,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494230336] [2022-07-12 06:57:05,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:05,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:57:05,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:05,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:57:05,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:57:05,876 INFO L87 Difference]: Start difference. First operand 2302 states and 3562 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 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) [2022-07-12 06:57:06,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:06,108 INFO L93 Difference]: Finished difference Result 6839 states and 10570 transitions. [2022-07-12 06:57:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:57:06,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 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 [2022-07-12 06:57:06,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:06,121 INFO L225 Difference]: With dead ends: 6839 [2022-07-12 06:57:06,121 INFO L226 Difference]: Without dead ends: 4575 [2022-07-12 06:57:06,126 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 [2022-07-12 06:57:06,129 INFO L413 NwaCegarLoop]: 1924 mSDtfsCounter, 959 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:06,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 2884 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:57:06,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2022-07-12 06:57:06,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 2321. [2022-07-12 06:57:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2321 states, 2319 states have (on average 1.5480810694264768) internal successors, (3590), 2320 states have internal predecessors, (3590), 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) [2022-07-12 06:57:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3590 transitions. [2022-07-12 06:57:06,287 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3590 transitions. Word has length 237 [2022-07-12 06:57:06,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:06,287 INFO L495 AbstractCegarLoop]: Abstraction has 2321 states and 3590 transitions. [2022-07-12 06:57:06,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 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) [2022-07-12 06:57:06,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3590 transitions. [2022-07-12 06:57:06,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-12 06:57:06,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:06,291 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] [2022-07-12 06:57:06,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:57:06,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:57:06,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:06,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1563603795, now seen corresponding path program 1 times [2022-07-12 06:57:06,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:06,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605627040] [2022-07-12 06:57:06,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:06,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:06,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:06,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605627040] [2022-07-12 06:57:06,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605627040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:06,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:06,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:57:06,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096130383] [2022-07-12 06:57:06,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:06,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:57:06,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:06,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:57:06,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:57:06,347 INFO L87 Difference]: Start difference. First operand 2321 states and 3590 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 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) [2022-07-12 06:57:06,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:06,583 INFO L93 Difference]: Finished difference Result 6858 states and 10591 transitions. [2022-07-12 06:57:06,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:57:06,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 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 [2022-07-12 06:57:06,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:06,597 INFO L225 Difference]: With dead ends: 6858 [2022-07-12 06:57:06,597 INFO L226 Difference]: Without dead ends: 4593 [2022-07-12 06:57:06,601 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 [2022-07-12 06:57:06,607 INFO L413 NwaCegarLoop]: 1924 mSDtfsCounter, 954 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:06,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 2884 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:57:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states. [2022-07-12 06:57:06,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 2339. [2022-07-12 06:57:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2339 states, 2337 states have (on average 1.545143346170304) internal successors, (3611), 2338 states have internal predecessors, (3611), 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) [2022-07-12 06:57:06,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 3611 transitions. [2022-07-12 06:57:06,768 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 3611 transitions. Word has length 238 [2022-07-12 06:57:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:06,769 INFO L495 AbstractCegarLoop]: Abstraction has 2339 states and 3611 transitions. [2022-07-12 06:57:06,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 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) [2022-07-12 06:57:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 3611 transitions. [2022-07-12 06:57:06,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-12 06:57:06,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:06,772 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] [2022-07-12 06:57:06,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:57:06,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:57:06,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:06,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2086534920, now seen corresponding path program 1 times [2022-07-12 06:57:06,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:06,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020766748] [2022-07-12 06:57:06,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:06,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:06,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:06,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020766748] [2022-07-12 06:57:06,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020766748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:06,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:06,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:57:06,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187950401] [2022-07-12 06:57:06,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:06,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:57:06,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:06,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:57:06,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:57:06,865 INFO L87 Difference]: Start difference. First operand 2339 states and 3611 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) [2022-07-12 06:57:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:07,153 INFO L93 Difference]: Finished difference Result 6601 states and 10128 transitions. [2022-07-12 06:57:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:57:07,154 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 [2022-07-12 06:57:07,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:07,166 INFO L225 Difference]: With dead ends: 6601 [2022-07-12 06:57:07,166 INFO L226 Difference]: Without dead ends: 4503 [2022-07-12 06:57:07,169 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 [2022-07-12 06:57:07,169 INFO L413 NwaCegarLoop]: 1892 mSDtfsCounter, 832 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 2817 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:07,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 2817 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:57:07,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2022-07-12 06:57:07,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 4472. [2022-07-12 06:57:07,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4470 states have (on average 1.5335570469798658) internal successors, (6855), 4471 states have internal predecessors, (6855), 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) [2022-07-12 06:57:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6855 transitions. [2022-07-12 06:57:07,411 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6855 transitions. Word has length 239 [2022-07-12 06:57:07,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:07,414 INFO L495 AbstractCegarLoop]: Abstraction has 4472 states and 6855 transitions. [2022-07-12 06:57:07,414 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) [2022-07-12 06:57:07,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6855 transitions. [2022-07-12 06:57:07,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-12 06:57:07,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:07,421 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] [2022-07-12 06:57:07,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:57:07,421 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:57:07,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:07,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1578780165, now seen corresponding path program 1 times [2022-07-12 06:57:07,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:07,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445924224] [2022-07-12 06:57:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:07,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:07,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:07,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445924224] [2022-07-12 06:57:07,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445924224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:07,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:07,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:57:07,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918459091] [2022-07-12 06:57:07,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:07,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:57:07,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:07,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:57:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:57:07,629 INFO L87 Difference]: Start difference. First operand 4472 states and 6855 transitions. Second operand has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 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) [2022-07-12 06:57:08,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:08,208 INFO L93 Difference]: Finished difference Result 12973 states and 19836 transitions. [2022-07-12 06:57:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:57:08,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 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 [2022-07-12 06:57:08,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:08,243 INFO L225 Difference]: With dead ends: 12973 [2022-07-12 06:57:08,244 INFO L226 Difference]: Without dead ends: 8556 [2022-07-12 06:57:08,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:57:08,251 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 2202 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2202 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:08,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2202 Valid, 3398 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:57:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8556 states. [2022-07-12 06:57:08,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8556 to 8530. [2022-07-12 06:57:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8530 states, 8528 states have (on average 1.5181754221388368) internal successors, (12947), 8529 states have internal predecessors, (12947), 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) [2022-07-12 06:57:08,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8530 states to 8530 states and 12947 transitions. [2022-07-12 06:57:08,840 INFO L78 Accepts]: Start accepts. Automaton has 8530 states and 12947 transitions. Word has length 239 [2022-07-12 06:57:08,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:08,840 INFO L495 AbstractCegarLoop]: Abstraction has 8530 states and 12947 transitions. [2022-07-12 06:57:08,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 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) [2022-07-12 06:57:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand 8530 states and 12947 transitions. [2022-07-12 06:57:08,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-12 06:57:08,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:08,855 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, 1] [2022-07-12 06:57:08,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:57:08,856 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:57:08,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:08,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2049253404, now seen corresponding path program 1 times [2022-07-12 06:57:08,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:08,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092111919] [2022-07-12 06:57:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:08,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:09,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:09,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092111919] [2022-07-12 06:57:09,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092111919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:09,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:09,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:57:09,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121941496] [2022-07-12 06:57:09,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:09,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:57:09,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:09,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:57:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:57:09,032 INFO L87 Difference]: Start difference. First operand 8530 states and 12947 transitions. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2022-07-12 06:57:10,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:10,020 INFO L93 Difference]: Finished difference Result 24974 states and 37844 transitions. [2022-07-12 06:57:10,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:57:10,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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 241 [2022-07-12 06:57:10,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:10,050 INFO L225 Difference]: With dead ends: 24974 [2022-07-12 06:57:10,050 INFO L226 Difference]: Without dead ends: 16561 [2022-07-12 06:57:10,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:57:10,061 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 1866 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1866 SdHoareTripleChecker+Valid, 3393 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:10,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1866 Valid, 3393 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:57:10,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16561 states. [2022-07-12 06:57:11,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16561 to 16544. [2022-07-12 06:57:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16544 states, 16542 states have (on average 1.5056825051384355) internal successors, (24907), 16543 states have internal predecessors, (24907), 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) [2022-07-12 06:57:11,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16544 states to 16544 states and 24907 transitions. [2022-07-12 06:57:11,264 INFO L78 Accepts]: Start accepts. Automaton has 16544 states and 24907 transitions. Word has length 241 [2022-07-12 06:57:11,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:11,264 INFO L495 AbstractCegarLoop]: Abstraction has 16544 states and 24907 transitions. [2022-07-12 06:57:11,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2022-07-12 06:57:11,264 INFO L276 IsEmpty]: Start isEmpty. Operand 16544 states and 24907 transitions. [2022-07-12 06:57:11,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-12 06:57:11,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:11,291 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, 1] [2022-07-12 06:57:11,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:57:11,292 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:57:11,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:11,292 INFO L85 PathProgramCache]: Analyzing trace with hash 975893657, now seen corresponding path program 1 times [2022-07-12 06:57:11,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:11,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250206726] [2022-07-12 06:57:11,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:11,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:11,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:11,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250206726] [2022-07-12 06:57:11,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250206726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:11,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:11,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:57:11,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350064845] [2022-07-12 06:57:11,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:11,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:57:11,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:11,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:57:11,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:57:11,440 INFO L87 Difference]: Start difference. First operand 16544 states and 24907 transitions. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 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) [2022-07-12 06:57:13,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:13,320 INFO L93 Difference]: Finished difference Result 48654 states and 73142 transitions. [2022-07-12 06:57:13,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:57:13,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 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 241 [2022-07-12 06:57:13,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:13,384 INFO L225 Difference]: With dead ends: 48654 [2022-07-12 06:57:13,384 INFO L226 Difference]: Without dead ends: 32340 [2022-07-12 06:57:13,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:57:13,407 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 2058 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:13,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 2477 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:57:13,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32340 states. [2022-07-12 06:57:15,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32340 to 32140. [2022-07-12 06:57:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32140 states, 32138 states have (on average 1.493776837388761) internal successors, (48007), 32139 states have internal predecessors, (48007), 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) [2022-07-12 06:57:15,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32140 states to 32140 states and 48007 transitions. [2022-07-12 06:57:15,966 INFO L78 Accepts]: Start accepts. Automaton has 32140 states and 48007 transitions. Word has length 241 [2022-07-12 06:57:15,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:15,966 INFO L495 AbstractCegarLoop]: Abstraction has 32140 states and 48007 transitions. [2022-07-12 06:57:15,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 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) [2022-07-12 06:57:15,967 INFO L276 IsEmpty]: Start isEmpty. Operand 32140 states and 48007 transitions. [2022-07-12 06:57:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-07-12 06:57:16,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:16,007 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, 1, 1, 1] [2022-07-12 06:57:16,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:57:16,007 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:57:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:16,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1975032520, now seen corresponding path program 1 times [2022-07-12 06:57:16,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:16,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089910632] [2022-07-12 06:57:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:16,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:16,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:16,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089910632] [2022-07-12 06:57:16,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089910632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:16,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:16,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:57:16,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523623020] [2022-07-12 06:57:16,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:16,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:57:16,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:16,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:57:16,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:57:16,079 INFO L87 Difference]: Start difference. First operand 32140 states and 48007 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2022-07-12 06:57:20,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:20,215 INFO L93 Difference]: Finished difference Result 93868 states and 139805 transitions. [2022-07-12 06:57:20,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:57:20,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 243 [2022-07-12 06:57:20,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:20,401 INFO L225 Difference]: With dead ends: 93868 [2022-07-12 06:57:20,402 INFO L226 Difference]: Without dead ends: 63108 [2022-07-12 06:57:20,474 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 [2022-07-12 06:57:20,475 INFO L413 NwaCegarLoop]: 1828 mSDtfsCounter, 815 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:20,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 2757 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:57:20,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63108 states. [2022-07-12 06:57:24,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63108 to 62908. [2022-07-12 06:57:24,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62908 states, 62906 states have (on average 1.4834356023272819) internal successors, (93317), 62907 states have internal predecessors, (93317), 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) [2022-07-12 06:57:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62908 states to 62908 states and 93317 transitions. [2022-07-12 06:57:24,913 INFO L78 Accepts]: Start accepts. Automaton has 62908 states and 93317 transitions. Word has length 243 [2022-07-12 06:57:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:24,914 INFO L495 AbstractCegarLoop]: Abstraction has 62908 states and 93317 transitions. [2022-07-12 06:57:24,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2022-07-12 06:57:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 62908 states and 93317 transitions. [2022-07-12 06:57:25,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-07-12 06:57:25,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:25,008 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, 1, 1, 1] [2022-07-12 06:57:25,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:57:25,008 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:57:25,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:25,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1487664941, now seen corresponding path program 1 times [2022-07-12 06:57:25,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:25,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338504502] [2022-07-12 06:57:25,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:25,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:25,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:25,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338504502] [2022-07-12 06:57:25,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338504502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:25,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:25,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:57:25,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988383162] [2022-07-12 06:57:25,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:25,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:57:25,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:57:25,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:57:25,059 INFO L87 Difference]: Start difference. First operand 62908 states and 93317 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2022-07-12 06:57:33,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:33,501 INFO L93 Difference]: Finished difference Result 187600 states and 278127 transitions. [2022-07-12 06:57:33,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:57:33,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 243 [2022-07-12 06:57:33,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:33,772 INFO L225 Difference]: With dead ends: 187600 [2022-07-12 06:57:33,773 INFO L226 Difference]: Without dead ends: 125354 [2022-07-12 06:57:33,996 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 [2022-07-12 06:57:33,997 INFO L413 NwaCegarLoop]: 1891 mSDtfsCounter, 926 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:33,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 2851 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:57:34,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125354 states.