./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_opt-floodmax.3.3.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 c198beb0d28344ce853798ba0422f36d86e4a319bc1c9073be7222ccddc0e2fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 18:39:44,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 18:39:44,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 18:39:44,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 18:39:44,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 18:39:44,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 18:39:44,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 18:39:44,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 18:39:44,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 18:39:44,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 18:39:44,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 18:39:44,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 18:39:44,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 18:39:44,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 18:39:44,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 18:39:44,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 18:39:44,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 18:39:44,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 18:39:44,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 18:39:44,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 18:39:44,069 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 18:39:44,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 18:39:44,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 18:39:44,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 18:39:44,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 18:39:44,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 18:39:44,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 18:39:44,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 18:39:44,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 18:39:44,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 18:39:44,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 18:39:44,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 18:39:44,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 18:39:44,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 18:39:44,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 18:39:44,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 18:39:44,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 18:39:44,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 18:39:44,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 18:39:44,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 18:39:44,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 18:39:44,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 18:39:44,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 18:39:44,101 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 18:39:44,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 18:39:44,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 18:39:44,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 18:39:44,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 18:39:44,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 18:39:44,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 18:39:44,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 18:39:44,104 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 18:39:44,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 18:39:44,104 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 18:39:44,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 18:39:44,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 18:39:44,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 18:39:44,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 18:39:44,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 18:39:44,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 18:39:44,105 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 18:39:44,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 18:39:44,106 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 18:39:44,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 18:39:44,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 18:39:44,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 18:39:44,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 18:39:44,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:39:44,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 18:39:44,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 18:39:44,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 18:39:44,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 18:39:44,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 18:39:44,108 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 18:39:44,108 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 18:39:44,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 18:39:44,108 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c198beb0d28344ce853798ba0422f36d86e4a319bc1c9073be7222ccddc0e2fa [2022-07-19 18:39:44,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 18:39:44,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 18:39:44,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 18:39:44,337 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 18:39:44,338 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 18:39:44,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-19 18:39:44,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4ab5a0fc/1400cfea854b4bdabaaac5cfe0f933d2/FLAG5788ef877 [2022-07-19 18:39:44,866 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 18:39:44,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-19 18:39:44,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4ab5a0fc/1400cfea854b4bdabaaac5cfe0f933d2/FLAG5788ef877 [2022-07-19 18:39:44,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4ab5a0fc/1400cfea854b4bdabaaac5cfe0f933d2 [2022-07-19 18:39:44,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 18:39:44,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 18:39:44,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 18:39:44,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 18:39:44,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 18:39:44,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:39:44" (1/1) ... [2022-07-19 18:39:44,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682d7ff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:39:44, skipping insertion in model container [2022-07-19 18:39:44,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:39:44" (1/1) ... [2022-07-19 18:39:44,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 18:39:44,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 18:39:45,234 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15595,15608] [2022-07-19 18:39:45,253 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16571,16584] [2022-07-19 18:39:45,325 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28918,28931] [2022-07-19 18:39:45,330 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29565,29578] [2022-07-19 18:39:45,336 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30949,30962] [2022-07-19 18:39:45,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:39:45,361 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 18:39:45,414 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15595,15608] [2022-07-19 18:39:45,420 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16571,16584] [2022-07-19 18:39:45,463 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28918,28931] [2022-07-19 18:39:45,469 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29565,29578] [2022-07-19 18:39:45,482 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30949,30962] [2022-07-19 18:39:45,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:39:45,518 INFO L208 MainTranslator]: Completed translation [2022-07-19 18:39:45,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:39:45 WrapperNode [2022-07-19 18:39:45,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 18:39:45,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 18:39:45,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 18:39:45,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 18:39:45,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:39:45" (1/1) ... [2022-07-19 18:39:45,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:39:45" (1/1) ... [2022-07-19 18:39:45,599 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1696 [2022-07-19 18:39:45,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 18:39:45,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 18:39:45,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 18:39:45,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 18:39:45,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:39:45" (1/1) ... [2022-07-19 18:39:45,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:39:45" (1/1) ... [2022-07-19 18:39:45,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:39:45" (1/1) ... [2022-07-19 18:39:45,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:39:45" (1/1) ... [2022-07-19 18:39:45,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:39:45" (1/1) ... [2022-07-19 18:39:45,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:39:45" (1/1) ... [2022-07-19 18:39:45,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:39:45" (1/1) ... [2022-07-19 18:39:45,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 18:39:45,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 18:39:45,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 18:39:45,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 18:39:45,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:39:45" (1/1) ... [2022-07-19 18:39:45,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:39:45,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:39:45,701 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) [2022-07-19 18:39:45,730 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 [2022-07-19 18:39:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 18:39:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 18:39:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 18:39:45,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 18:39:45,933 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 18:39:45,934 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 18:39:46,758 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 18:39:46,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 18:39:46,765 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 18:39:46,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:39:46 BoogieIcfgContainer [2022-07-19 18:39:46,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 18:39:46,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 18:39:46,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 18:39:46,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 18:39:46,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 06:39:44" (1/3) ... [2022-07-19 18:39:46,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6408c945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:39:46, skipping insertion in model container [2022-07-19 18:39:46,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:39:45" (2/3) ... [2022-07-19 18:39:46,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6408c945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:39:46, skipping insertion in model container [2022-07-19 18:39:46,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:39:46" (3/3) ... [2022-07-19 18:39:46,772 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-19 18:39:46,781 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 18:39:46,781 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-07-19 18:39:46,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 18:39:46,819 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@1c4df437, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7186e949 [2022-07-19 18:39:46,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 18:39:46,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 418 states have (on average 1.8038277511961722) internal successors, (754), 423 states have internal predecessors, (754), 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) [2022-07-19 18:39:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 18:39:46,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:39:46,834 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] [2022-07-19 18:39:46,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:39:46,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:39:46,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1455877833, now seen corresponding path program 1 times [2022-07-19 18:39:46,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:39:46,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669478117] [2022-07-19 18:39:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:39:46,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:39:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:39:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:39:47,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:39:47,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669478117] [2022-07-19 18:39:47,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669478117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:39:47,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:39:47,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:39:47,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576006706] [2022-07-19 18:39:47,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:39:47,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:39:47,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:39:47,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:39:47,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:39:47,162 INFO L87 Difference]: Start difference. First operand has 424 states, 418 states have (on average 1.8038277511961722) internal successors, (754), 423 states have internal predecessors, (754), 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 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2022-07-19 18:39:47,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:39:47,287 INFO L93 Difference]: Finished difference Result 767 states and 1341 transitions. [2022-07-19 18:39:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:39:47,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 150 [2022-07-19 18:39:47,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:39:47,300 INFO L225 Difference]: With dead ends: 767 [2022-07-19 18:39:47,301 INFO L226 Difference]: Without dead ends: 612 [2022-07-19 18:39:47,303 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 [2022-07-19 18:39:47,305 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 474 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:39:47,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 1181 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:39:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-07-19 18:39:47,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 610. [2022-07-19 18:39:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 605 states have (on average 1.4793388429752066) internal successors, (895), 609 states have internal predecessors, (895), 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) [2022-07-19 18:39:47,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 895 transitions. [2022-07-19 18:39:47,381 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 895 transitions. Word has length 150 [2022-07-19 18:39:47,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:39:47,381 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 895 transitions. [2022-07-19 18:39:47,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2022-07-19 18:39:47,382 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 895 transitions. [2022-07-19 18:39:47,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 18:39:47,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:39:47,387 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] [2022-07-19 18:39:47,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 18:39:47,387 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:39:47,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:39:47,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1340171657, now seen corresponding path program 1 times [2022-07-19 18:39:47,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:39:47,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051150497] [2022-07-19 18:39:47,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:39:47,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:39:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:39:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:39:47,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:39:47,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051150497] [2022-07-19 18:39:47,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051150497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:39:47,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:39:47,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:39:47,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372457749] [2022-07-19 18:39:47,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:39:47,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:39:47,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:39:47,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:39:47,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:39:47,651 INFO L87 Difference]: Start difference. First operand 610 states and 895 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2022-07-19 18:39:47,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:39:47,816 INFO L93 Difference]: Finished difference Result 1784 states and 2608 transitions. [2022-07-19 18:39:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:39:47,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 150 [2022-07-19 18:39:47,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:39:47,826 INFO L225 Difference]: With dead ends: 1784 [2022-07-19 18:39:47,827 INFO L226 Difference]: Without dead ends: 1183 [2022-07-19 18:39:47,830 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 [2022-07-19 18:39:47,832 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 1291 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:39:47,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 1534 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:39:47,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-07-19 18:39:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1156. [2022-07-19 18:39:47,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1151 states have (on average 1.466550825369244) internal successors, (1688), 1155 states have internal predecessors, (1688), 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) [2022-07-19 18:39:47,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1688 transitions. [2022-07-19 18:39:47,940 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1688 transitions. Word has length 150 [2022-07-19 18:39:47,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:39:47,942 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1688 transitions. [2022-07-19 18:39:47,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2022-07-19 18:39:47,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1688 transitions. [2022-07-19 18:39:47,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-19 18:39:47,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:39:47,955 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] [2022-07-19 18:39:47,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 18:39:47,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:39:47,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:39:47,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1287913931, now seen corresponding path program 1 times [2022-07-19 18:39:47,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:39:47,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656477026] [2022-07-19 18:39:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:39:47,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:39:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:39:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:39:48,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:39:48,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656477026] [2022-07-19 18:39:48,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656477026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:39:48,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:39:48,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:39:48,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646742858] [2022-07-19 18:39:48,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:39:48,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:39:48,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:39:48,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:39:48,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:39:48,058 INFO L87 Difference]: Start difference. First operand 1156 states and 1688 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2022-07-19 18:39:48,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:39:48,168 INFO L93 Difference]: Finished difference Result 3430 states and 5002 transitions. [2022-07-19 18:39:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:39:48,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 151 [2022-07-19 18:39:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:39:48,175 INFO L225 Difference]: With dead ends: 3430 [2022-07-19 18:39:48,176 INFO L226 Difference]: Without dead ends: 2302 [2022-07-19 18:39:48,178 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 [2022-07-19 18:39:48,180 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 594 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:39:48,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 1397 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:39:48,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-07-19 18:39:48,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1158. [2022-07-19 18:39:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1153 states have (on average 1.4657415437987857) internal successors, (1690), 1157 states have internal predecessors, (1690), 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) [2022-07-19 18:39:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1690 transitions. [2022-07-19 18:39:48,244 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1690 transitions. Word has length 151 [2022-07-19 18:39:48,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:39:48,244 INFO L495 AbstractCegarLoop]: Abstraction has 1158 states and 1690 transitions. [2022-07-19 18:39:48,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2022-07-19 18:39:48,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1690 transitions. [2022-07-19 18:39:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-19 18:39:48,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:39:48,246 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] [2022-07-19 18:39:48,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 18:39:48,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:39:48,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:39:48,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1852245384, now seen corresponding path program 1 times [2022-07-19 18:39:48,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:39:48,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363419655] [2022-07-19 18:39:48,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:39:48,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:39:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:39:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:39:48,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:39:48,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363419655] [2022-07-19 18:39:48,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363419655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:39:48,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:39:48,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:39:48,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238361378] [2022-07-19 18:39:48,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:39:48,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:39:48,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:39:48,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:39:48,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:39:48,404 INFO L87 Difference]: Start difference. First operand 1158 states and 1690 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2022-07-19 18:39:48,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:39:48,581 INFO L93 Difference]: Finished difference Result 3356 states and 4874 transitions. [2022-07-19 18:39:48,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:39:48,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2022-07-19 18:39:48,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:39:48,588 INFO L225 Difference]: With dead ends: 3356 [2022-07-19 18:39:48,588 INFO L226 Difference]: Without dead ends: 2228 [2022-07-19 18:39:48,590 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 [2022-07-19 18:39:48,591 INFO L413 NwaCegarLoop]: 1049 mSDtfsCounter, 1198 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:39:48,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 1602 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:39:48,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2022-07-19 18:39:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2201. [2022-07-19 18:39:48,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 2196 states have (on average 1.4489981785063752) internal successors, (3182), 2200 states have internal predecessors, (3182), 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) [2022-07-19 18:39:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3182 transitions. [2022-07-19 18:39:48,725 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3182 transitions. Word has length 152 [2022-07-19 18:39:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:39:48,726 INFO L495 AbstractCegarLoop]: Abstraction has 2201 states and 3182 transitions. [2022-07-19 18:39:48,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2022-07-19 18:39:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3182 transitions. [2022-07-19 18:39:48,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-19 18:39:48,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:39:48,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:39:48,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 18:39:48,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:39:48,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:39:48,730 INFO L85 PathProgramCache]: Analyzing trace with hash 258705708, now seen corresponding path program 1 times [2022-07-19 18:39:48,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:39:48,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142479927] [2022-07-19 18:39:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:39:48,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:39:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:39:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:39:48,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:39:48,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142479927] [2022-07-19 18:39:48,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142479927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:39:48,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:39:48,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:39:48,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538871927] [2022-07-19 18:39:48,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:39:48,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:39:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:39:48,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:39:48,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:39:48,771 INFO L87 Difference]: Start difference. First operand 2201 states and 3182 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:39:49,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:39:49,035 INFO L93 Difference]: Finished difference Result 6527 states and 9426 transitions. [2022-07-19 18:39:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:39:49,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-07-19 18:39:49,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:39:49,049 INFO L225 Difference]: With dead ends: 6527 [2022-07-19 18:39:49,050 INFO L226 Difference]: Without dead ends: 4370 [2022-07-19 18:39:49,054 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 [2022-07-19 18:39:49,055 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 580 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:39:49,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 1331 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:39:49,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2022-07-19 18:39:49,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 2205. [2022-07-19 18:39:49,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 2200 states have (on average 1.4481818181818182) internal successors, (3186), 2204 states have internal predecessors, (3186), 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) [2022-07-19 18:39:49,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3186 transitions. [2022-07-19 18:39:49,226 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3186 transitions. Word has length 153 [2022-07-19 18:39:49,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:39:49,227 INFO L495 AbstractCegarLoop]: Abstraction has 2205 states and 3186 transitions. [2022-07-19 18:39:49,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:39:49,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3186 transitions. [2022-07-19 18:39:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-19 18:39:49,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:39:49,234 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] [2022-07-19 18:39:49,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 18:39:49,234 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:39:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:39:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash 56905465, now seen corresponding path program 1 times [2022-07-19 18:39:49,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:39:49,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872675647] [2022-07-19 18:39:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:39:49,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:39:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:39:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:39:49,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:39:49,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872675647] [2022-07-19 18:39:49,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872675647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:39:49,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:39:49,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:39:49,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573338613] [2022-07-19 18:39:49,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:39:49,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:39:49,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:39:49,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:39:49,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:39:49,344 INFO L87 Difference]: Start difference. First operand 2205 states and 3186 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2022-07-19 18:39:49,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:39:49,607 INFO L93 Difference]: Finished difference Result 6028 states and 8657 transitions. [2022-07-19 18:39:49,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:39:49,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 154 [2022-07-19 18:39:49,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:39:49,617 INFO L225 Difference]: With dead ends: 6028 [2022-07-19 18:39:49,617 INFO L226 Difference]: Without dead ends: 3871 [2022-07-19 18:39:49,619 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 [2022-07-19 18:39:49,620 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 1263 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:39:49,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 1520 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:39:49,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3871 states. [2022-07-19 18:39:49,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3871 to 3844. [2022-07-19 18:39:49,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3839 states have (on average 1.4240687679083095) internal successors, (5467), 3843 states have internal predecessors, (5467), 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) [2022-07-19 18:39:49,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 5467 transitions. [2022-07-19 18:39:49,887 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 5467 transitions. Word has length 154 [2022-07-19 18:39:49,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:39:49,888 INFO L495 AbstractCegarLoop]: Abstraction has 3844 states and 5467 transitions. [2022-07-19 18:39:49,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2022-07-19 18:39:49,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 5467 transitions. [2022-07-19 18:39:49,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-19 18:39:49,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:39:49,892 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] [2022-07-19 18:39:49,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 18:39:49,892 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:39:49,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:39:49,893 INFO L85 PathProgramCache]: Analyzing trace with hash 954785037, now seen corresponding path program 1 times [2022-07-19 18:39:49,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:39:49,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507953004] [2022-07-19 18:39:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:39:49,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:39:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:39:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:39:49,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:39:49,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507953004] [2022-07-19 18:39:49,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507953004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:39:49,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:39:49,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:39:49,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140228789] [2022-07-19 18:39:49,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:39:49,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:39:49,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:39:49,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:39:49,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:39:49,931 INFO L87 Difference]: Start difference. First operand 3844 states and 5467 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2022-07-19 18:39:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:39:50,359 INFO L93 Difference]: Finished difference Result 11100 states and 15823 transitions. [2022-07-19 18:39:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:39:50,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 155 [2022-07-19 18:39:50,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:39:50,377 INFO L225 Difference]: With dead ends: 11100 [2022-07-19 18:39:50,378 INFO L226 Difference]: Without dead ends: 7596 [2022-07-19 18:39:50,381 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 [2022-07-19 18:39:50,382 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 566 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:39:50,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 1764 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:39:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2022-07-19 18:39:50,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 3852. [2022-07-19 18:39:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 3847 states have (on average 1.4231868988822458) internal successors, (5475), 3851 states have internal predecessors, (5475), 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) [2022-07-19 18:39:50,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 5475 transitions. [2022-07-19 18:39:50,712 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 5475 transitions. Word has length 155 [2022-07-19 18:39:50,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:39:50,712 INFO L495 AbstractCegarLoop]: Abstraction has 3852 states and 5475 transitions. [2022-07-19 18:39:50,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2022-07-19 18:39:50,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 5475 transitions. [2022-07-19 18:39:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 18:39:50,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:39:50,716 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] [2022-07-19 18:39:50,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 18:39:50,717 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:39:50,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:39:50,718 INFO L85 PathProgramCache]: Analyzing trace with hash -536571574, now seen corresponding path program 1 times [2022-07-19 18:39:50,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:39:50,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186259262] [2022-07-19 18:39:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:39:50,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:39:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:39:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:39:50,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:39:50,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186259262] [2022-07-19 18:39:50,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186259262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:39:50,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:39:50,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:39:50,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838017924] [2022-07-19 18:39:50,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:39:50,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:39:50,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:39:50,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:39:50,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:39:50,838 INFO L87 Difference]: Start difference. First operand 3852 states and 5475 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 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) [2022-07-19 18:39:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:39:51,341 INFO L93 Difference]: Finished difference Result 11204 states and 15862 transitions. [2022-07-19 18:39:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:39:51,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 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 156 [2022-07-19 18:39:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:39:51,362 INFO L225 Difference]: With dead ends: 11204 [2022-07-19 18:39:51,362 INFO L226 Difference]: Without dead ends: 7440 [2022-07-19 18:39:51,369 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 [2022-07-19 18:39:51,369 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 1124 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:39:51,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 2134 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:39:51,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7440 states. [2022-07-19 18:39:51,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7440 to 7413. [2022-07-19 18:39:51,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7413 states, 7408 states have (on average 1.404292656587473) internal successors, (10403), 7412 states have internal predecessors, (10403), 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) [2022-07-19 18:39:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7413 states to 7413 states and 10403 transitions. [2022-07-19 18:39:51,841 INFO L78 Accepts]: Start accepts. Automaton has 7413 states and 10403 transitions. Word has length 156 [2022-07-19 18:39:51,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:39:51,841 INFO L495 AbstractCegarLoop]: Abstraction has 7413 states and 10403 transitions. [2022-07-19 18:39:51,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 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) [2022-07-19 18:39:51,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7413 states and 10403 transitions. [2022-07-19 18:39:51,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 18:39:51,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:39:51,850 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] [2022-07-19 18:39:51,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 18:39:51,850 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:39:51,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:39:51,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1526474758, now seen corresponding path program 1 times [2022-07-19 18:39:51,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:39:51,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151779361] [2022-07-19 18:39:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:39:51,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:39:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:39:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:39:51,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:39:51,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151779361] [2022-07-19 18:39:51,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151779361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:39:51,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:39:51,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:39:51,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782699630] [2022-07-19 18:39:51,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:39:51,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:39:51,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:39:51,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:39:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:39:51,924 INFO L87 Difference]: Start difference. First operand 7413 states and 10403 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2022-07-19 18:39:52,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:39:52,389 INFO L93 Difference]: Finished difference Result 13014 states and 18248 transitions. [2022-07-19 18:39:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:39:52,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 156 [2022-07-19 18:39:52,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:39:52,398 INFO L225 Difference]: With dead ends: 13014 [2022-07-19 18:39:52,399 INFO L226 Difference]: Without dead ends: 5675 [2022-07-19 18:39:52,405 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 [2022-07-19 18:39:52,406 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 65 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:39:52,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1846 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:39:52,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5675 states. [2022-07-19 18:39:52,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5675 to 5675. [2022-07-19 18:39:52,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5675 states, 5670 states have (on average 1.4017636684303352) internal successors, (7948), 5674 states have internal predecessors, (7948), 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) [2022-07-19 18:39:52,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5675 states to 5675 states and 7948 transitions. [2022-07-19 18:39:52,846 INFO L78 Accepts]: Start accepts. Automaton has 5675 states and 7948 transitions. Word has length 156 [2022-07-19 18:39:52,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:39:52,846 INFO L495 AbstractCegarLoop]: Abstraction has 5675 states and 7948 transitions. [2022-07-19 18:39:52,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2022-07-19 18:39:52,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5675 states and 7948 transitions. [2022-07-19 18:39:52,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-19 18:39:52,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:39:52,852 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] [2022-07-19 18:39:52,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 18:39:52,853 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:39:52,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:39:52,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2039955482, now seen corresponding path program 1 times [2022-07-19 18:39:52,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:39:52,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792624650] [2022-07-19 18:39:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:39:52,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:39:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:39:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:39:52,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:39:52,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792624650] [2022-07-19 18:39:52,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792624650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:39:52,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:39:52,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:39:52,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333455307] [2022-07-19 18:39:52,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:39:52,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:39:52,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:39:52,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:39:52,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:39:52,892 INFO L87 Difference]: Start difference. First operand 5675 states and 7948 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2022-07-19 18:39:53,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:39:53,371 INFO L93 Difference]: Finished difference Result 13212 states and 18956 transitions. [2022-07-19 18:39:53,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:39:53,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 158 [2022-07-19 18:39:53,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:39:53,384 INFO L225 Difference]: With dead ends: 13212 [2022-07-19 18:39:53,385 INFO L226 Difference]: Without dead ends: 8149 [2022-07-19 18:39:53,390 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 [2022-07-19 18:39:53,391 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 315 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:39:53,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1277 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:39:53,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8149 states. [2022-07-19 18:39:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8149 to 7132. [2022-07-19 18:39:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7127 states have (on average 1.4453486740564052) internal successors, (10301), 7131 states have internal predecessors, (10301), 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) [2022-07-19 18:39:53,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10301 transitions. [2022-07-19 18:39:53,840 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10301 transitions. Word has length 158 [2022-07-19 18:39:53,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:39:53,840 INFO L495 AbstractCegarLoop]: Abstraction has 7132 states and 10301 transitions. [2022-07-19 18:39:53,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2022-07-19 18:39:53,841 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10301 transitions. [2022-07-19 18:39:53,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 18:39:53,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:39:53,847 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] [2022-07-19 18:39:53,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 18:39:53,848 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:39:53,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:39:53,848 INFO L85 PathProgramCache]: Analyzing trace with hash -941287042, now seen corresponding path program 1 times [2022-07-19 18:39:53,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:39:53,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009968578] [2022-07-19 18:39:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:39:53,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:39:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:39:53,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:39:53,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:39:53,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009968578] [2022-07-19 18:39:53,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009968578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:39:53,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:39:53,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:39:53,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014054313] [2022-07-19 18:39:53,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:39:53,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:39:53,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:39:53,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:39:53,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:39:53,886 INFO L87 Difference]: Start difference. First operand 7132 states and 10301 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2022-07-19 18:39:54,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:39:54,550 INFO L93 Difference]: Finished difference Result 15693 states and 23187 transitions. [2022-07-19 18:39:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:39:54,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 160 [2022-07-19 18:39:54,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:39:54,568 INFO L225 Difference]: With dead ends: 15693 [2022-07-19 18:39:54,568 INFO L226 Difference]: Without dead ends: 10322 [2022-07-19 18:39:54,575 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 [2022-07-19 18:39:54,575 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 352 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:39:54,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1279 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:39:54,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10322 states. [2022-07-19 18:39:55,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10322 to 9350. [2022-07-19 18:39:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9350 states, 9345 states have (on average 1.4799357945425362) internal successors, (13830), 9349 states have internal predecessors, (13830), 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) [2022-07-19 18:39:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9350 states to 9350 states and 13830 transitions. [2022-07-19 18:39:55,478 INFO L78 Accepts]: Start accepts. Automaton has 9350 states and 13830 transitions. Word has length 160 [2022-07-19 18:39:55,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:39:55,478 INFO L495 AbstractCegarLoop]: Abstraction has 9350 states and 13830 transitions. [2022-07-19 18:39:55,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2022-07-19 18:39:55,479 INFO L276 IsEmpty]: Start isEmpty. Operand 9350 states and 13830 transitions. [2022-07-19 18:39:55,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 18:39:55,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:39:55,485 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] [2022-07-19 18:39:55,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 18:39:55,486 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:39:55,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:39:55,486 INFO L85 PathProgramCache]: Analyzing trace with hash 522123654, now seen corresponding path program 1 times [2022-07-19 18:39:55,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:39:55,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539475738] [2022-07-19 18:39:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:39:55,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:39:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:39:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:39:55,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:39:55,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539475738] [2022-07-19 18:39:55,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539475738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:39:55,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:39:55,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:39:55,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169372764] [2022-07-19 18:39:55,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:39:55,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:39:55,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:39:55,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:39:55,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:39:55,563 INFO L87 Difference]: Start difference. First operand 9350 states and 13830 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2022-07-19 18:39:56,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:39:56,810 INFO L93 Difference]: Finished difference Result 22275 states and 34095 transitions. [2022-07-19 18:39:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:39:56,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 161 [2022-07-19 18:39:56,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:39:56,833 INFO L225 Difference]: With dead ends: 22275 [2022-07-19 18:39:56,834 INFO L226 Difference]: Without dead ends: 16612 [2022-07-19 18:39:56,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:39:56,845 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 1083 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:39:56,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1043 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:39:56,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16612 states. [2022-07-19 18:39:58,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16612 to 16610. [2022-07-19 18:39:58,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16610 states, 16605 states have (on average 1.4995483288166216) internal successors, (24900), 16609 states have internal predecessors, (24900), 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) [2022-07-19 18:39:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16610 states to 16610 states and 24900 transitions. [2022-07-19 18:39:58,101 INFO L78 Accepts]: Start accepts. Automaton has 16610 states and 24900 transitions. Word has length 161 [2022-07-19 18:39:58,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:39:58,101 INFO L495 AbstractCegarLoop]: Abstraction has 16610 states and 24900 transitions. [2022-07-19 18:39:58,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2022-07-19 18:39:58,102 INFO L276 IsEmpty]: Start isEmpty. Operand 16610 states and 24900 transitions. [2022-07-19 18:39:58,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 18:39:58,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:39:58,109 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] [2022-07-19 18:39:58,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 18:39:58,109 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:39:58,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:39:58,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1501052056, now seen corresponding path program 1 times [2022-07-19 18:39:58,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:39:58,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662175019] [2022-07-19 18:39:58,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:39:58,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:39:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:39:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:39:58,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:39:58,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662175019] [2022-07-19 18:39:58,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662175019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:39:58,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:39:58,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:39:58,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166326199] [2022-07-19 18:39:58,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:39:58,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:39:58,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:39:58,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:39:58,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:39:58,169 INFO L87 Difference]: Start difference. First operand 16610 states and 24900 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2022-07-19 18:40:00,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:00,757 INFO L93 Difference]: Finished difference Result 43376 states and 64954 transitions. [2022-07-19 18:40:00,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:40:00,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 161 [2022-07-19 18:40:00,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:00,794 INFO L225 Difference]: With dead ends: 43376 [2022-07-19 18:40:00,794 INFO L226 Difference]: Without dead ends: 26898 [2022-07-19 18:40:00,810 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 [2022-07-19 18:40:00,810 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 1180 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:00,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 1560 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26898 states. [2022-07-19 18:40:02,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26898 to 26875. [2022-07-19 18:40:03,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26875 states, 26870 states have (on average 1.4808336434685523) internal successors, (39790), 26874 states have internal predecessors, (39790), 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) [2022-07-19 18:40:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26875 states to 26875 states and 39790 transitions. [2022-07-19 18:40:03,107 INFO L78 Accepts]: Start accepts. Automaton has 26875 states and 39790 transitions. Word has length 161 [2022-07-19 18:40:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:03,107 INFO L495 AbstractCegarLoop]: Abstraction has 26875 states and 39790 transitions. [2022-07-19 18:40:03,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2022-07-19 18:40:03,108 INFO L276 IsEmpty]: Start isEmpty. Operand 26875 states and 39790 transitions. [2022-07-19 18:40:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 18:40:03,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:03,121 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] [2022-07-19 18:40:03,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 18:40:03,121 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:03,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:03,121 INFO L85 PathProgramCache]: Analyzing trace with hash 965682877, now seen corresponding path program 1 times [2022-07-19 18:40:03,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:03,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897685739] [2022-07-19 18:40:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:03,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:03,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:03,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897685739] [2022-07-19 18:40:03,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897685739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:03,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:03,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:40:03,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691796709] [2022-07-19 18:40:03,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:03,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:40:03,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:03,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:40:03,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:40:03,192 INFO L87 Difference]: Start difference. First operand 26875 states and 39790 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2022-07-19 18:40:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:05,418 INFO L93 Difference]: Finished difference Result 47913 states and 70973 transitions. [2022-07-19 18:40:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:40:05,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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 163 [2022-07-19 18:40:05,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:05,461 INFO L225 Difference]: With dead ends: 47913 [2022-07-19 18:40:05,462 INFO L226 Difference]: Without dead ends: 26875 [2022-07-19 18:40:05,482 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 [2022-07-19 18:40:05,482 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 53 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:05,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1819 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:05,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26875 states. [2022-07-19 18:40:07,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26875 to 26875. [2022-07-19 18:40:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26875 states, 26870 states have (on average 1.4807964272422776) internal successors, (39789), 26874 states have internal predecessors, (39789), 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) [2022-07-19 18:40:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26875 states to 26875 states and 39789 transitions. [2022-07-19 18:40:08,040 INFO L78 Accepts]: Start accepts. Automaton has 26875 states and 39789 transitions. Word has length 163 [2022-07-19 18:40:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:08,040 INFO L495 AbstractCegarLoop]: Abstraction has 26875 states and 39789 transitions. [2022-07-19 18:40:08,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2022-07-19 18:40:08,040 INFO L276 IsEmpty]: Start isEmpty. Operand 26875 states and 39789 transitions. [2022-07-19 18:40:08,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 18:40:08,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:08,052 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] [2022-07-19 18:40:08,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 18:40:08,052 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:08,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:08,053 INFO L85 PathProgramCache]: Analyzing trace with hash 448440634, now seen corresponding path program 1 times [2022-07-19 18:40:08,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:08,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105474830] [2022-07-19 18:40:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:08,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:08,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:08,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105474830] [2022-07-19 18:40:08,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105474830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:08,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:08,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:08,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931830190] [2022-07-19 18:40:08,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:08,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:08,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:08,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:08,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:08,090 INFO L87 Difference]: Start difference. First operand 26875 states and 39789 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2022-07-19 18:40:11,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:11,557 INFO L93 Difference]: Finished difference Result 67145 states and 99680 transitions. [2022-07-19 18:40:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:11,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 163 [2022-07-19 18:40:11,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:11,623 INFO L225 Difference]: With dead ends: 67145 [2022-07-19 18:40:11,623 INFO L226 Difference]: Without dead ends: 41804 [2022-07-19 18:40:11,645 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 [2022-07-19 18:40:11,646 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 519 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:11,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1218 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:11,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41804 states. [2022-07-19 18:40:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41804 to 41783. [2022-07-19 18:40:15,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41783 states, 41778 states have (on average 1.4628991335152473) internal successors, (61117), 41782 states have internal predecessors, (61117), 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) [2022-07-19 18:40:15,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41783 states to 41783 states and 61117 transitions. [2022-07-19 18:40:15,671 INFO L78 Accepts]: Start accepts. Automaton has 41783 states and 61117 transitions. Word has length 163 [2022-07-19 18:40:15,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:15,671 INFO L495 AbstractCegarLoop]: Abstraction has 41783 states and 61117 transitions. [2022-07-19 18:40:15,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2022-07-19 18:40:15,671 INFO L276 IsEmpty]: Start isEmpty. Operand 41783 states and 61117 transitions. [2022-07-19 18:40:15,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 18:40:15,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:15,696 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] [2022-07-19 18:40:15,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 18:40:15,697 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:15,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:15,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1989579749, now seen corresponding path program 1 times [2022-07-19 18:40:15,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:15,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490842915] [2022-07-19 18:40:15,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:15,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:15,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:15,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490842915] [2022-07-19 18:40:15,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490842915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:15,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:15,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:15,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41121183] [2022-07-19 18:40:15,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:15,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:15,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:15,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:15,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:15,734 INFO L87 Difference]: Start difference. First operand 41783 states and 61117 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-07-19 18:40:21,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:21,599 INFO L93 Difference]: Finished difference Result 99916 states and 148123 transitions. [2022-07-19 18:40:21,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:21,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 167 [2022-07-19 18:40:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:21,701 INFO L225 Difference]: With dead ends: 99916 [2022-07-19 18:40:21,702 INFO L226 Difference]: Without dead ends: 65735 [2022-07-19 18:40:21,733 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 [2022-07-19 18:40:21,734 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 314 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:21,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1259 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:40:21,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65735 states. [2022-07-19 18:40:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65735 to 59919. [2022-07-19 18:40:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59919 states, 59914 states have (on average 1.4943251994525486) internal successors, (89531), 59918 states have internal predecessors, (89531), 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) [2022-07-19 18:40:27,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59919 states to 59919 states and 89531 transitions. [2022-07-19 18:40:27,875 INFO L78 Accepts]: Start accepts. Automaton has 59919 states and 89531 transitions. Word has length 167 [2022-07-19 18:40:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:27,875 INFO L495 AbstractCegarLoop]: Abstraction has 59919 states and 89531 transitions. [2022-07-19 18:40:27,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-07-19 18:40:27,875 INFO L276 IsEmpty]: Start isEmpty. Operand 59919 states and 89531 transitions. [2022-07-19 18:40:27,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 18:40:27,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:27,892 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] [2022-07-19 18:40:27,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 18:40:27,892 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:27,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:27,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1583623339, now seen corresponding path program 1 times [2022-07-19 18:40:27,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:27,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110069522] [2022-07-19 18:40:27,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:27,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:27,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:27,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110069522] [2022-07-19 18:40:27,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110069522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:27,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:27,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:27,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653857659] [2022-07-19 18:40:27,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:27,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:27,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:27,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:27,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:27,972 INFO L87 Difference]: Start difference. First operand 59919 states and 89531 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2022-07-19 18:40:39,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:39,491 INFO L93 Difference]: Finished difference Result 171785 states and 258481 transitions. [2022-07-19 18:40:39,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:39,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 168 [2022-07-19 18:40:39,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:39,695 INFO L225 Difference]: With dead ends: 171785 [2022-07-19 18:40:39,695 INFO L226 Difference]: Without dead ends: 116507 [2022-07-19 18:40:39,754 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 [2022-07-19 18:40:39,755 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 501 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:39,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1044 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:40:39,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116507 states.