./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem16_label59.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem16_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ --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 744695bd97e773bc45009ad8c308621dee61f75b749d2d70fc4d697e39202153 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:15:00,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:15:00,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:15:00,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:15:00,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:15:00,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:15:00,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:15:00,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:15:00,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:15:00,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:15:00,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:15:00,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:15:00,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:15:00,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:15:00,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:15:00,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:15:00,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:15:00,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:15:00,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:15:00,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:15:00,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:15:00,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:15:00,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:15:00,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:15:00,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:15:00,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:15:00,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:15:00,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:15:00,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:15:00,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:15:00,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:15:00,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:15:00,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:15:00,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:15:00,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:15:00,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:15:00,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:15:00,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:15:00,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:15:00,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:15:00,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:15:00,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:15:00,382 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:15:00,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:15:00,384 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:15:00,385 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:15:00,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:15:00,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:15:00,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:15:00,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:15:00,388 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:15:00,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:15:00,390 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:15:00,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:15:00,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:15:00,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:15:00,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:15:00,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:15:00,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:15:00,392 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:15:00,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:15:00,392 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:15:00,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:15:00,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:15:00,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:15:00,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:15:00,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:15:00,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:15:00,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:15:00,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:15:00,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:15:00,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:15:00,396 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:15:00,396 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:15:00,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:15:00,397 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 744695bd97e773bc45009ad8c308621dee61f75b749d2d70fc4d697e39202153 [2022-10-17 10:15:00,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:15:00,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:15:00,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:15:00,827 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:15:00,828 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:15:00,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/eca-rers2012/Problem16_label59.c [2022-10-17 10:15:00,937 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ/data/e33d20e18/60de99933171460faca3760030af27ff/FLAG2ff0bcd87 [2022-10-17 10:15:01,748 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:15:01,748 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/sv-benchmarks/c/eca-rers2012/Problem16_label59.c [2022-10-17 10:15:01,774 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ/data/e33d20e18/60de99933171460faca3760030af27ff/FLAG2ff0bcd87 [2022-10-17 10:15:01,830 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ/data/e33d20e18/60de99933171460faca3760030af27ff [2022-10-17 10:15:01,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:15:01,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:15:01,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:01,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:15:01,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:15:01,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:01" (1/1) ... [2022-10-17 10:15:01,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39431169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:01, skipping insertion in model container [2022-10-17 10:15:01,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:01" (1/1) ... [2022-10-17 10:15:01,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:15:01,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:15:02,251 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/sv-benchmarks/c/eca-rers2012/Problem16_label59.c[4713,4726] [2022-10-17 10:15:02,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:15:02,846 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:15:02,893 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/sv-benchmarks/c/eca-rers2012/Problem16_label59.c[4713,4726] [2022-10-17 10:15:03,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:15:03,348 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:15:03,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:03 WrapperNode [2022-10-17 10:15:03,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:03,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:15:03,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:15:03,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:15:03,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:03" (1/1) ... [2022-10-17 10:15:03,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:03" (1/1) ... [2022-10-17 10:15:03,597 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1768 [2022-10-17 10:15:03,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:15:03,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:15:03,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:15:03,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:15:03,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:03" (1/1) ... [2022-10-17 10:15:03,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:03" (1/1) ... [2022-10-17 10:15:03,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:03" (1/1) ... [2022-10-17 10:15:03,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:03" (1/1) ... [2022-10-17 10:15:03,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:03" (1/1) ... [2022-10-17 10:15:03,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:03" (1/1) ... [2022-10-17 10:15:03,722 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:03" (1/1) ... [2022-10-17 10:15:03,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:03" (1/1) ... [2022-10-17 10:15:03,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:15:03,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:15:03,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:15:03,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:15:03,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:03" (1/1) ... [2022-10-17 10:15:03,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:15:03,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:03,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:03,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07be2d32-06cf-4e6e-9f9b-847c7fe98b6b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:15:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:15:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:15:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:15:03,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:15:04,043 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:15:04,045 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:15:07,068 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:15:07,093 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:15:07,093 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:15:07,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:15:07 BoogieIcfgContainer [2022-10-17 10:15:07,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:15:07,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:15:07,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:15:07,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:15:07,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:15:01" (1/3) ... [2022-10-17 10:15:07,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c366a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:15:07, skipping insertion in model container [2022-10-17 10:15:07,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:03" (2/3) ... [2022-10-17 10:15:07,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c366a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:15:07, skipping insertion in model container [2022-10-17 10:15:07,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:15:07" (3/3) ... [2022-10-17 10:15:07,112 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label59.c [2022-10-17 10:15:07,137 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:15:07,137 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:15:07,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:15:07,271 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@79c06272, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:15:07,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:15:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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) [2022-10-17 10:15:07,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 10:15:07,293 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:07,293 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] [2022-10-17 10:15:07,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:15:07,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:07,301 INFO L85 PathProgramCache]: Analyzing trace with hash 626000386, now seen corresponding path program 1 times [2022-10-17 10:15:07,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:07,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868501215] [2022-10-17 10:15:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:07,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:07,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:07,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868501215] [2022-10-17 10:15:07,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868501215] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:07,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:07,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:15:07,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780624397] [2022-10-17 10:15:07,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:07,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:15:07,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:07,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:15:07,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:07,931 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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) [2022-10-17 10:15:10,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:10,596 INFO L93 Difference]: Finished difference Result 1137 states and 2118 transitions. [2022-10-17 10:15:10,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:15:10,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 44 [2022-10-17 10:15:10,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:10,621 INFO L225 Difference]: With dead ends: 1137 [2022-10-17 10:15:10,621 INFO L226 Difference]: Without dead ends: 662 [2022-10-17 10:15:10,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:10,632 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 342 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:10,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 60 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-17 10:15:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-10-17 10:15:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2022-10-17 10:15:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.7639939485627836) internal successors, (1166), 661 states have internal predecessors, (1166), 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) [2022-10-17 10:15:10,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1166 transitions. [2022-10-17 10:15:10,736 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1166 transitions. Word has length 44 [2022-10-17 10:15:10,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:10,736 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1166 transitions. [2022-10-17 10:15:10,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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) [2022-10-17 10:15:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1166 transitions. [2022-10-17 10:15:10,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-10-17 10:15:10,746 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:10,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:10,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:15:10,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:15:10,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:10,748 INFO L85 PathProgramCache]: Analyzing trace with hash -228214936, now seen corresponding path program 1 times [2022-10-17 10:15:10,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:10,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111993026] [2022-10-17 10:15:10,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:10,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:11,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:11,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111993026] [2022-10-17 10:15:11,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111993026] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:11,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:11,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:15:11,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543690025] [2022-10-17 10:15:11,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:11,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:15:11,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:11,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:15:11,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:11,120 INFO L87 Difference]: Start difference. First operand 662 states and 1166 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2022-10-17 10:15:12,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:12,979 INFO L93 Difference]: Finished difference Result 1980 states and 3493 transitions. [2022-10-17 10:15:12,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:15:12,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 109 [2022-10-17 10:15:12,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:12,993 INFO L225 Difference]: With dead ends: 1980 [2022-10-17 10:15:12,993 INFO L226 Difference]: Without dead ends: 1320 [2022-10-17 10:15:13,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:13,008 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 344 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:13,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 77 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-17 10:15:13,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-10-17 10:15:13,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2022-10-17 10:15:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.6656557998483699) internal successors, (2197), 1319 states have internal predecessors, (2197), 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) [2022-10-17 10:15:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2197 transitions. [2022-10-17 10:15:13,096 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2197 transitions. Word has length 109 [2022-10-17 10:15:13,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:13,100 INFO L495 AbstractCegarLoop]: Abstraction has 1320 states and 2197 transitions. [2022-10-17 10:15:13,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2022-10-17 10:15:13,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2197 transitions. [2022-10-17 10:15:13,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-10-17 10:15:13,112 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:13,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:13,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:15:13,113 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:15:13,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:13,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1921470884, now seen corresponding path program 1 times [2022-10-17 10:15:13,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:13,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564221082] [2022-10-17 10:15:13,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:13,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:13,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:13,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564221082] [2022-10-17 10:15:13,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564221082] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:13,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:13,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:15:13,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551712179] [2022-10-17 10:15:13,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:13,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:15:13,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:13,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:15:13,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:13,486 INFO L87 Difference]: Start difference. First operand 1320 states and 2197 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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) [2022-10-17 10:15:15,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:15,790 INFO L93 Difference]: Finished difference Result 3625 states and 6017 transitions. [2022-10-17 10:15:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:15:15,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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 112 [2022-10-17 10:15:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:15,811 INFO L225 Difference]: With dead ends: 3625 [2022-10-17 10:15:15,811 INFO L226 Difference]: Without dead ends: 2307 [2022-10-17 10:15:15,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:15,824 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 282 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:15,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 120 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-17 10:15:15,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2022-10-17 10:15:15,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2307. [2022-10-17 10:15:15,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2306 states have (on average 1.5923677363399826) internal successors, (3672), 2306 states have internal predecessors, (3672), 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) [2022-10-17 10:15:15,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 3672 transitions. [2022-10-17 10:15:15,912 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 3672 transitions. Word has length 112 [2022-10-17 10:15:15,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:15,915 INFO L495 AbstractCegarLoop]: Abstraction has 2307 states and 3672 transitions. [2022-10-17 10:15:15,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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) [2022-10-17 10:15:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 3672 transitions. [2022-10-17 10:15:15,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 10:15:15,922 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:15,923 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:15,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:15:15,924 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:15:15,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:15,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1971144876, now seen corresponding path program 1 times [2022-10-17 10:15:15,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:15,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371487799] [2022-10-17 10:15:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:15,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:16,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:16,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371487799] [2022-10-17 10:15:16,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371487799] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:16,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:16,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:15:16,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556518594] [2022-10-17 10:15:16,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:16,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:15:16,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:16,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:15:16,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:15:16,320 INFO L87 Difference]: Start difference. First operand 2307 states and 3672 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 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) [2022-10-17 10:15:19,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:19,822 INFO L93 Difference]: Finished difference Result 6257 states and 9781 transitions. [2022-10-17 10:15:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:15:19,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 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 117 [2022-10-17 10:15:19,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:19,854 INFO L225 Difference]: With dead ends: 6257 [2022-10-17 10:15:19,854 INFO L226 Difference]: Without dead ends: 3952 [2022-10-17 10:15:19,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:15:19,869 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 884 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:19,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 191 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-10-17 10:15:19,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2022-10-17 10:15:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3952. [2022-10-17 10:15:19,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3951 states have (on average 1.4312832194381169) internal successors, (5655), 3951 states have internal predecessors, (5655), 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) [2022-10-17 10:15:20,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 5655 transitions. [2022-10-17 10:15:20,009 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 5655 transitions. Word has length 117 [2022-10-17 10:15:20,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:20,011 INFO L495 AbstractCegarLoop]: Abstraction has 3952 states and 5655 transitions. [2022-10-17 10:15:20,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 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) [2022-10-17 10:15:20,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 5655 transitions. [2022-10-17 10:15:20,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-10-17 10:15:20,013 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:20,013 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:20,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:15:20,014 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:15:20,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:20,015 INFO L85 PathProgramCache]: Analyzing trace with hash -912563919, now seen corresponding path program 1 times [2022-10-17 10:15:20,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:20,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822367439] [2022-10-17 10:15:20,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:20,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:20,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:20,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822367439] [2022-10-17 10:15:20,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822367439] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:20,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:20,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:15:20,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233557225] [2022-10-17 10:15:20,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:20,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:15:20,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:20,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:15:20,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:20,228 INFO L87 Difference]: Start difference. First operand 3952 states and 5655 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2022-10-17 10:15:21,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:21,774 INFO L93 Difference]: Finished difference Result 7573 states and 10973 transitions. [2022-10-17 10:15:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:15:21,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 131 [2022-10-17 10:15:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:21,815 INFO L225 Difference]: With dead ends: 7573 [2022-10-17 10:15:21,815 INFO L226 Difference]: Without dead ends: 3952 [2022-10-17 10:15:21,821 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 [2022-10-17 10:15:21,822 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 340 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:21,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 540 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-17 10:15:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2022-10-17 10:15:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3952. [2022-10-17 10:15:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3951 states have (on average 1.3153631991900785) internal successors, (5197), 3951 states have internal predecessors, (5197), 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) [2022-10-17 10:15:21,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 5197 transitions. [2022-10-17 10:15:21,936 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 5197 transitions. Word has length 131 [2022-10-17 10:15:21,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:21,937 INFO L495 AbstractCegarLoop]: Abstraction has 3952 states and 5197 transitions. [2022-10-17 10:15:21,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2022-10-17 10:15:21,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 5197 transitions. [2022-10-17 10:15:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-10-17 10:15:21,947 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:21,947 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:21,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:15:21,948 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:15:21,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:21,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1359915327, now seen corresponding path program 1 times [2022-10-17 10:15:21,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:21,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507907967] [2022-10-17 10:15:21,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:21,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-10-17 10:15:22,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:22,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507907967] [2022-10-17 10:15:22,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507907967] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:22,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:22,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:15:22,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667209387] [2022-10-17 10:15:22,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:22,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:15:22,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:22,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:15:22,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:22,265 INFO L87 Difference]: Start difference. First operand 3952 states and 5197 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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) [2022-10-17 10:15:24,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:24,073 INFO L93 Difference]: Finished difference Result 8889 states and 11783 transitions. [2022-10-17 10:15:24,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:15:24,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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 232 [2022-10-17 10:15:24,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:24,103 INFO L225 Difference]: With dead ends: 8889 [2022-10-17 10:15:24,103 INFO L226 Difference]: Without dead ends: 4610 [2022-10-17 10:15:24,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:24,110 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 345 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:24,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 155 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:15:24,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2022-10-17 10:15:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4610. [2022-10-17 10:15:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4609 states have (on average 1.0772401822521154) internal successors, (4965), 4609 states have internal predecessors, (4965), 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) [2022-10-17 10:15:24,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 4965 transitions. [2022-10-17 10:15:24,237 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 4965 transitions. Word has length 232 [2022-10-17 10:15:24,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:24,237 INFO L495 AbstractCegarLoop]: Abstraction has 4610 states and 4965 transitions. [2022-10-17 10:15:24,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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) [2022-10-17 10:15:24,238 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 4965 transitions. [2022-10-17 10:15:24,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-10-17 10:15:24,247 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:24,248 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:24,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:15:24,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:15:24,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:24,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1195091839, now seen corresponding path program 1 times [2022-10-17 10:15:24,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:24,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646520306] [2022-10-17 10:15:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:24,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:24,820 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-10-17 10:15:24,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:24,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646520306] [2022-10-17 10:15:24,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646520306] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:24,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:24,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:15:24,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241386345] [2022-10-17 10:15:24,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:24,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:15:24,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:24,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:15:24,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:24,825 INFO L87 Difference]: Start difference. First operand 4610 states and 4965 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:26,334 INFO L93 Difference]: Finished difference Result 12179 states and 13204 transitions. [2022-10-17 10:15:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:15:26,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 383 [2022-10-17 10:15:26,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:26,384 INFO L225 Difference]: With dead ends: 12179 [2022-10-17 10:15:26,385 INFO L226 Difference]: Without dead ends: 8229 [2022-10-17 10:15:26,391 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 [2022-10-17 10:15:26,392 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 288 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:26,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 421 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:15:26,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2022-10-17 10:15:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8229. [2022-10-17 10:15:26,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8229 states, 8228 states have (on average 1.0651434127369956) internal successors, (8764), 8228 states have internal predecessors, (8764), 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) [2022-10-17 10:15:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8229 states to 8229 states and 8764 transitions. [2022-10-17 10:15:26,616 INFO L78 Accepts]: Start accepts. Automaton has 8229 states and 8764 transitions. Word has length 383 [2022-10-17 10:15:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:26,619 INFO L495 AbstractCegarLoop]: Abstraction has 8229 states and 8764 transitions. [2022-10-17 10:15:26,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:26,620 INFO L276 IsEmpty]: Start isEmpty. Operand 8229 states and 8764 transitions. [2022-10-17 10:15:26,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2022-10-17 10:15:26,636 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:26,637 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:26,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:15:26,637 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:15:26,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:26,638 INFO L85 PathProgramCache]: Analyzing trace with hash -502550951, now seen corresponding path program 1 times [2022-10-17 10:15:26,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:26,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882376196] [2022-10-17 10:15:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:26,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-10-17 10:15:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:27,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882376196] [2022-10-17 10:15:27,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882376196] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:27,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:27,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:15:27,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189237143] [2022-10-17 10:15:27,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:27,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:15:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:27,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:15:27,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:27,466 INFO L87 Difference]: Start difference. First operand 8229 states and 8764 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2022-10-17 10:15:28,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:28,665 INFO L93 Difference]: Finished difference Result 15798 states and 16856 transitions. [2022-10-17 10:15:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:15:28,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 493 [2022-10-17 10:15:28,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:28,717 INFO L225 Difference]: With dead ends: 15798 [2022-10-17 10:15:28,717 INFO L226 Difference]: Without dead ends: 8229 [2022-10-17 10:15:28,727 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 [2022-10-17 10:15:28,728 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 255 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:28,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 419 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-17 10:15:28,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2022-10-17 10:15:28,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 7571. [2022-10-17 10:15:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7571 states, 7570 states have (on average 1.0586525759577279) internal successors, (8014), 7570 states have internal predecessors, (8014), 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) [2022-10-17 10:15:28,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7571 states to 7571 states and 8014 transitions. [2022-10-17 10:15:28,921 INFO L78 Accepts]: Start accepts. Automaton has 7571 states and 8014 transitions. Word has length 493 [2022-10-17 10:15:28,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:28,923 INFO L495 AbstractCegarLoop]: Abstraction has 7571 states and 8014 transitions. [2022-10-17 10:15:28,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2022-10-17 10:15:28,924 INFO L276 IsEmpty]: Start isEmpty. Operand 7571 states and 8014 transitions. [2022-10-17 10:15:28,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2022-10-17 10:15:28,950 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:28,951 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:28,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:15:28,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:15:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:28,952 INFO L85 PathProgramCache]: Analyzing trace with hash -196722755, now seen corresponding path program 1 times [2022-10-17 10:15:28,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:28,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77551676] [2022-10-17 10:15:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:28,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms