./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc --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 5b06f43d0873a45269a4958da066d5bcb75939de6aa3fcbada350cd9dc55d93c --- 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-5e519f3 [2022-11-02 20:34:36,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:34:36,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:34:36,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:34:36,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:34:36,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:34:36,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:34:36,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:34:36,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:34:36,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:34:36,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:34:36,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:34:36,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:34:36,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:34:36,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:34:36,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:34:36,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:34:36,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:34:36,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:34:36,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:34:36,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:34:36,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:34:36,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:34:36,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:34:36,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:34:36,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:34:36,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:34:36,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:34:36,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:34:36,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:34:36,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:34:36,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:34:36,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:34:36,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:34:36,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:34:36,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:34:36,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:34:36,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:34:36,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:34:36,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:34:36,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:34:36,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:34:36,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:34:36,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:34:36,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:34:36,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:34:36,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:34:36,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:34:36,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:34:36,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:34:36,326 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:34:36,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:34:36,327 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:34:36,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:34:36,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:34:36,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:34:36,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:34:36,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:34:36,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:34:36,329 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:34:36,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:34:36,330 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:34:36,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:34:36,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:34:36,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:34:36,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:34:36,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:34:36,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:34:36,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:34:36,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:34:36,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:34:36,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:34:36,334 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:34:36,334 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:34:36,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:34:36,335 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_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b06f43d0873a45269a4958da066d5bcb75939de6aa3fcbada350cd9dc55d93c [2022-11-02 20:34:36,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:34:36,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:34:36,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:34:36,750 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:34:36,753 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:34:36,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c [2022-11-02 20:34:36,851 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc/data/5b38f6a80/b36529c04a23471a9328e7657d2be126/FLAG32e23f009 [2022-11-02 20:34:37,660 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:34:37,661 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c [2022-11-02 20:34:37,695 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc/data/5b38f6a80/b36529c04a23471a9328e7657d2be126/FLAG32e23f009 [2022-11-02 20:34:37,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc/data/5b38f6a80/b36529c04a23471a9328e7657d2be126 [2022-11-02 20:34:37,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:34:37,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:34:37,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:34:37,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:34:37,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:34:37,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:34:37" (1/1) ... [2022-11-02 20:34:37,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627afe4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:37, skipping insertion in model container [2022-11-02 20:34:37,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:34:37" (1/1) ... [2022-11-02 20:34:37,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:34:37,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:34:38,684 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_01f499da-bbe3-4244-a1d1-12952c9ad612/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c[65679,65692] [2022-11-02 20:34:38,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:34:38,703 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:34:38,860 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_01f499da-bbe3-4244-a1d1-12952c9ad612/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c[65679,65692] [2022-11-02 20:34:38,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:34:38,880 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:34:38,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:38 WrapperNode [2022-11-02 20:34:38,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:34:38,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:34:38,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:34:38,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:34:38,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:38" (1/1) ... [2022-11-02 20:34:38,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:38" (1/1) ... [2022-11-02 20:34:39,063 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2133 [2022-11-02 20:34:39,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:34:39,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:34:39,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:34:39,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:34:39,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:38" (1/1) ... [2022-11-02 20:34:39,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:38" (1/1) ... [2022-11-02 20:34:39,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:38" (1/1) ... [2022-11-02 20:34:39,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:38" (1/1) ... [2022-11-02 20:34:39,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:38" (1/1) ... [2022-11-02 20:34:39,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:38" (1/1) ... [2022-11-02 20:34:39,168 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:38" (1/1) ... [2022-11-02 20:34:39,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:38" (1/1) ... [2022-11-02 20:34:39,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:34:39,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:34:39,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:34:39,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:34:39,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:38" (1/1) ... [2022-11-02 20:34:39,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:34:39,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:39,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:34:39,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f499da-bbe3-4244-a1d1-12952c9ad612/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:34:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:34:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:34:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:34:39,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:34:39,684 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:34:39,687 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:34:41,908 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:34:41,939 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:34:41,940 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:34:41,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:34:41 BoogieIcfgContainer [2022-11-02 20:34:41,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:34:41,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:34:41,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:34:41,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:34:41,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:34:37" (1/3) ... [2022-11-02 20:34:41,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77724df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:34:41, skipping insertion in model container [2022-11-02 20:34:41,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:38" (2/3) ... [2022-11-02 20:34:41,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77724df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:34:41, skipping insertion in model container [2022-11-02 20:34:41,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:34:41" (3/3) ... [2022-11-02 20:34:41,966 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c [2022-11-02 20:34:41,986 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:34:41,986 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:34:42,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:34:42,095 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;@59fedbe6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:34:42,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:34:42,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 746 states, 744 states have (on average 1.8454301075268817) internal successors, (1373), 745 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:42,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-02 20:34:42,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:42,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:42,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:42,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:42,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1610308336, now seen corresponding path program 1 times [2022-11-02 20:34:42,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:42,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493107808] [2022-11-02 20:34:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:42,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:42,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:42,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493107808] [2022-11-02 20:34:42,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493107808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:42,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:42,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:34:42,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181977307] [2022-11-02 20:34:42,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:42,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:34:42,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:42,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:34:42,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:34:42,997 INFO L87 Difference]: Start difference. First operand has 746 states, 744 states have (on average 1.8454301075268817) internal successors, (1373), 745 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:43,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:43,083 INFO L93 Difference]: Finished difference Result 938 states and 1707 transitions. [2022-11-02 20:34:43,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:34:43,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-11-02 20:34:43,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:43,107 INFO L225 Difference]: With dead ends: 938 [2022-11-02 20:34:43,107 INFO L226 Difference]: Without dead ends: 742 [2022-11-02 20:34:43,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:34:43,116 INFO L413 NwaCegarLoop]: 1366 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:43,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:34:43,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-11-02 20:34:43,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2022-11-02 20:34:43,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 1.843454790823212) internal successors, (1366), 741 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1366 transitions. [2022-11-02 20:34:43,270 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1366 transitions. Word has length 153 [2022-11-02 20:34:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:43,273 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 1366 transitions. [2022-11-02 20:34:43,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:43,275 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1366 transitions. [2022-11-02 20:34:43,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-02 20:34:43,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:43,288 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] [2022-11-02 20:34:43,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:34:43,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:43,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:43,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1100835246, now seen corresponding path program 1 times [2022-11-02 20:34:43,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:43,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734946084] [2022-11-02 20:34:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:43,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:44,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:44,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734946084] [2022-11-02 20:34:44,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734946084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:44,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:44,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:44,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869002876] [2022-11-02 20:34:44,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:44,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:44,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:44,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:44,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:44,046 INFO L87 Difference]: Start difference. First operand 742 states and 1366 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:44,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:44,309 INFO L93 Difference]: Finished difference Result 937 states and 1700 transitions. [2022-11-02 20:34:44,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:34:44,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-11-02 20:34:44,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:44,316 INFO L225 Difference]: With dead ends: 937 [2022-11-02 20:34:44,316 INFO L226 Difference]: Without dead ends: 742 [2022-11-02 20:34:44,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:34:44,319 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 3 mSDsluCounter, 4024 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5388 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:44,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5388 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:44,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-11-02 20:34:44,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2022-11-02 20:34:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 1.7557354925775979) internal successors, (1301), 741 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:44,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1301 transitions. [2022-11-02 20:34:44,347 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1301 transitions. Word has length 153 [2022-11-02 20:34:44,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:44,348 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 1301 transitions. [2022-11-02 20:34:44,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1301 transitions. [2022-11-02 20:34:44,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-02 20:34:44,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:44,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:44,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:34:44,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:44,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:44,354 INFO L85 PathProgramCache]: Analyzing trace with hash -698376180, now seen corresponding path program 1 times [2022-11-02 20:34:44,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:44,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570424803] [2022-11-02 20:34:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:44,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:44,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:44,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570424803] [2022-11-02 20:34:44,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570424803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:44,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:44,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:34:44,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079295155] [2022-11-02 20:34:44,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:44,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:34:44,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:44,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:34:44,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:34:44,743 INFO L87 Difference]: Start difference. First operand 742 states and 1301 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:44,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:44,856 INFO L93 Difference]: Finished difference Result 1110 states and 1935 transitions. [2022-11-02 20:34:44,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:44,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2022-11-02 20:34:44,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:44,868 INFO L225 Difference]: With dead ends: 1110 [2022-11-02 20:34:44,868 INFO L226 Difference]: Without dead ends: 919 [2022-11-02 20:34:44,872 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 [2022-11-02 20:34:44,874 INFO L413 NwaCegarLoop]: 1294 mSDtfsCounter, 295 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:44,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 2524 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:44,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-11-02 20:34:44,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 916. [2022-11-02 20:34:44,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 1.7453551912568306) internal successors, (1597), 915 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:44,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1597 transitions. [2022-11-02 20:34:44,926 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1597 transitions. Word has length 217 [2022-11-02 20:34:44,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:44,928 INFO L495 AbstractCegarLoop]: Abstraction has 916 states and 1597 transitions. [2022-11-02 20:34:44,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:44,929 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1597 transitions. [2022-11-02 20:34:44,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-02 20:34:44,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:44,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:44,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:34:44,941 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:44,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:44,945 INFO L85 PathProgramCache]: Analyzing trace with hash -128120140, now seen corresponding path program 1 times [2022-11-02 20:34:44,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:44,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836035747] [2022-11-02 20:34:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:44,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:45,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:45,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836035747] [2022-11-02 20:34:45,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836035747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:45,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:45,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:34:45,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804417046] [2022-11-02 20:34:45,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:45,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:34:45,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:45,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:34:45,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:34:45,398 INFO L87 Difference]: Start difference. First operand 916 states and 1597 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:45,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:45,494 INFO L93 Difference]: Finished difference Result 1622 states and 2805 transitions. [2022-11-02 20:34:45,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:45,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2022-11-02 20:34:45,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:45,504 INFO L225 Difference]: With dead ends: 1622 [2022-11-02 20:34:45,504 INFO L226 Difference]: Without dead ends: 1257 [2022-11-02 20:34:45,509 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 [2022-11-02 20:34:45,520 INFO L413 NwaCegarLoop]: 1298 mSDtfsCounter, 295 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:45,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 2537 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:34:45,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-11-02 20:34:45,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1253. [2022-11-02 20:34:45,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1252 states have (on average 1.7348242811501597) internal successors, (2172), 1252 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:45,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 2172 transitions. [2022-11-02 20:34:45,591 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 2172 transitions. Word has length 221 [2022-11-02 20:34:45,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:45,592 INFO L495 AbstractCegarLoop]: Abstraction has 1253 states and 2172 transitions. [2022-11-02 20:34:45,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:45,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 2172 transitions. [2022-11-02 20:34:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-02 20:34:45,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:45,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:45,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:34:45,599 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:45,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:45,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1683241124, now seen corresponding path program 1 times [2022-11-02 20:34:45,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:45,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568670040] [2022-11-02 20:34:45,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:45,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:45,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:45,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568670040] [2022-11-02 20:34:45,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568670040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:45,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:45,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:34:45,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055256887] [2022-11-02 20:34:45,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:45,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:34:45,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:45,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:34:45,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:34:45,962 INFO L87 Difference]: Start difference. First operand 1253 states and 2172 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:46,047 INFO L93 Difference]: Finished difference Result 2609 states and 4486 transitions. [2022-11-02 20:34:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:46,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2022-11-02 20:34:46,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:46,057 INFO L225 Difference]: With dead ends: 2609 [2022-11-02 20:34:46,058 INFO L226 Difference]: Without dead ends: 1907 [2022-11-02 20:34:46,060 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 [2022-11-02 20:34:46,066 INFO L413 NwaCegarLoop]: 1298 mSDtfsCounter, 287 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:46,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 2538 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:34:46,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2022-11-02 20:34:46,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1901. [2022-11-02 20:34:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1901 states, 1900 states have (on average 1.7221052631578948) internal successors, (3272), 1900 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:46,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 3272 transitions. [2022-11-02 20:34:46,138 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 3272 transitions. Word has length 225 [2022-11-02 20:34:46,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:46,139 INFO L495 AbstractCegarLoop]: Abstraction has 1901 states and 3272 transitions. [2022-11-02 20:34:46,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:46,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 3272 transitions. [2022-11-02 20:34:46,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-02 20:34:46,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:46,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:46,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:34:46,153 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:46,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:46,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1320539652, now seen corresponding path program 1 times [2022-11-02 20:34:46,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:46,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389202844] [2022-11-02 20:34:46,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:46,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:46,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:46,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389202844] [2022-11-02 20:34:46,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389202844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:46,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:46,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:34:46,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204372531] [2022-11-02 20:34:46,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:46,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:34:46,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:46,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:34:46,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:34:46,528 INFO L87 Difference]: Start difference. First operand 1901 states and 3272 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:46,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:46,634 INFO L93 Difference]: Finished difference Result 4505 states and 7698 transitions. [2022-11-02 20:34:46,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:46,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2022-11-02 20:34:46,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:46,649 INFO L225 Difference]: With dead ends: 4505 [2022-11-02 20:34:46,649 INFO L226 Difference]: Without dead ends: 3155 [2022-11-02 20:34:46,652 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 [2022-11-02 20:34:46,655 INFO L413 NwaCegarLoop]: 1298 mSDtfsCounter, 279 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:46,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 2539 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:34:46,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3155 states. [2022-11-02 20:34:46,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3155 to 3145. [2022-11-02 20:34:46,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3145 states, 3144 states have (on average 1.7086513994910941) internal successors, (5372), 3144 states have internal predecessors, (5372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:46,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 5372 transitions. [2022-11-02 20:34:46,786 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 5372 transitions. Word has length 229 [2022-11-02 20:34:46,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:46,787 INFO L495 AbstractCegarLoop]: Abstraction has 3145 states and 5372 transitions. [2022-11-02 20:34:46,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:46,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 5372 transitions. [2022-11-02 20:34:46,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-02 20:34:46,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:46,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:46,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:34:46,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:46,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:46,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2073741652, now seen corresponding path program 1 times [2022-11-02 20:34:46,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:46,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124013008] [2022-11-02 20:34:46,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:46,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:47,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:47,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124013008] [2022-11-02 20:34:47,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124013008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:47,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:47,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:34:47,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790735915] [2022-11-02 20:34:47,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:47,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:34:47,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:34:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:34:47,150 INFO L87 Difference]: Start difference. First operand 3145 states and 5372 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:47,324 INFO L93 Difference]: Finished difference Result 8141 states and 13822 transitions. [2022-11-02 20:34:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:47,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2022-11-02 20:34:47,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:47,347 INFO L225 Difference]: With dead ends: 8141 [2022-11-02 20:34:47,347 INFO L226 Difference]: Without dead ends: 5547 [2022-11-02 20:34:47,352 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 [2022-11-02 20:34:47,353 INFO L413 NwaCegarLoop]: 1298 mSDtfsCounter, 271 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:47,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 2540 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:34:47,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2022-11-02 20:34:47,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 5529. [2022-11-02 20:34:47,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5529 states, 5528 states have (on average 1.695369030390738) internal successors, (9372), 5528 states have internal predecessors, (9372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5529 states to 5529 states and 9372 transitions. [2022-11-02 20:34:47,633 INFO L78 Accepts]: Start accepts. Automaton has 5529 states and 9372 transitions. Word has length 233 [2022-11-02 20:34:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:47,634 INFO L495 AbstractCegarLoop]: Abstraction has 5529 states and 9372 transitions. [2022-11-02 20:34:47,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:47,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5529 states and 9372 transitions. [2022-11-02 20:34:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-02 20:34:47,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:47,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:47,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:34:47,645 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:47,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:47,645 INFO L85 PathProgramCache]: Analyzing trace with hash 337897812, now seen corresponding path program 1 times [2022-11-02 20:34:47,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:47,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160718930] [2022-11-02 20:34:47,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:47,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:48,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:48,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160718930] [2022-11-02 20:34:48,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160718930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:48,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:48,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:34:48,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511582692] [2022-11-02 20:34:48,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:48,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:34:48,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:48,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:34:48,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:34:48,126 INFO L87 Difference]: Start difference. First operand 5529 states and 9372 transitions. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:49,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:49,752 INFO L93 Difference]: Finished difference Result 33757 states and 57350 transitions. [2022-11-02 20:34:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:34:49,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2022-11-02 20:34:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:49,965 INFO L225 Difference]: With dead ends: 33757 [2022-11-02 20:34:49,965 INFO L226 Difference]: Without dead ends: 28779 [2022-11-02 20:34:49,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:34:49,979 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 3262 mSDsluCounter, 12480 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3262 SdHoareTripleChecker+Valid, 13797 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:49,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3262 Valid, 13797 Invalid, 395 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:34:50,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2022-11-02 20:34:50,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 10323. [2022-11-02 20:34:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10323 states, 10322 states have (on average 1.690854485564813) internal successors, (17453), 10322 states have internal predecessors, (17453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:50,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10323 states to 10323 states and 17453 transitions. [2022-11-02 20:34:50,904 INFO L78 Accepts]: Start accepts. Automaton has 10323 states and 17453 transitions. Word has length 237 [2022-11-02 20:34:50,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:50,905 INFO L495 AbstractCegarLoop]: Abstraction has 10323 states and 17453 transitions. [2022-11-02 20:34:50,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:50,907 INFO L276 IsEmpty]: Start isEmpty. Operand 10323 states and 17453 transitions. [2022-11-02 20:34:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-02 20:34:50,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:50,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:50,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:34:50,922 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:50,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:50,923 INFO L85 PathProgramCache]: Analyzing trace with hash -381481659, now seen corresponding path program 1 times [2022-11-02 20:34:50,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:50,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697371194] [2022-11-02 20:34:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:50,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:51,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:51,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697371194] [2022-11-02 20:34:51,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697371194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:51,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:51,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:34:51,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635502967] [2022-11-02 20:34:51,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:51,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:34:51,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:51,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:34:51,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:34:51,306 INFO L87 Difference]: Start difference. First operand 10323 states and 17453 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:52,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:52,143 INFO L93 Difference]: Finished difference Result 30257 states and 51271 transitions. [2022-11-02 20:34:52,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:34:52,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2022-11-02 20:34:52,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:52,201 INFO L225 Difference]: With dead ends: 30257 [2022-11-02 20:34:52,202 INFO L226 Difference]: Without dead ends: 20485 [2022-11-02 20:34:52,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:52,222 INFO L413 NwaCegarLoop]: 1304 mSDtfsCounter, 959 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 4151 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:52,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 4151 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:52,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20485 states. [2022-11-02 20:34:53,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20485 to 15371. [2022-11-02 20:34:53,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15371 states, 15370 states have (on average 1.6913467794404684) internal successors, (25996), 15370 states have internal predecessors, (25996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:53,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15371 states to 15371 states and 25996 transitions. [2022-11-02 20:34:53,220 INFO L78 Accepts]: Start accepts. Automaton has 15371 states and 25996 transitions. Word has length 238 [2022-11-02 20:34:53,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:53,221 INFO L495 AbstractCegarLoop]: Abstraction has 15371 states and 25996 transitions. [2022-11-02 20:34:53,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:53,221 INFO L276 IsEmpty]: Start isEmpty. Operand 15371 states and 25996 transitions. [2022-11-02 20:34:53,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-02 20:34:53,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:53,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:53,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:34:53,233 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:53,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:53,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1038404437, now seen corresponding path program 1 times [2022-11-02 20:34:53,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:53,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780712328] [2022-11-02 20:34:53,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:53,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:53,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:53,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780712328] [2022-11-02 20:34:53,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780712328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:53,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:53,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:34:53,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769898481] [2022-11-02 20:34:53,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:53,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:34:53,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:53,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:34:53,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:34:53,571 INFO L87 Difference]: Start difference. First operand 15371 states and 25996 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:54,988 INFO L93 Difference]: Finished difference Result 45331 states and 76731 transitions. [2022-11-02 20:34:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:34:54,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2022-11-02 20:34:54,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:55,099 INFO L225 Difference]: With dead ends: 45331 [2022-11-02 20:34:55,101 INFO L226 Difference]: Without dead ends: 30511 [2022-11-02 20:34:55,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:55,126 INFO L413 NwaCegarLoop]: 1290 mSDtfsCounter, 959 mSDsluCounter, 2849 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 4139 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:55,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 4139 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:55,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30511 states. [2022-11-02 20:34:56,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30511 to 22893. [2022-11-02 20:34:56,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22893 states, 22892 states have (on average 1.6890616809365717) internal successors, (38666), 22892 states have internal predecessors, (38666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22893 states to 22893 states and 38666 transitions. [2022-11-02 20:34:56,562 INFO L78 Accepts]: Start accepts. Automaton has 22893 states and 38666 transitions. Word has length 239 [2022-11-02 20:34:56,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:56,563 INFO L495 AbstractCegarLoop]: Abstraction has 22893 states and 38666 transitions. [2022-11-02 20:34:56,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 22893 states and 38666 transitions. [2022-11-02 20:34:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-02 20:34:56,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:56,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:56,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:34:56,579 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:56,580 INFO L85 PathProgramCache]: Analyzing trace with hash 240830268, now seen corresponding path program 1 times [2022-11-02 20:34:56,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:56,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771141614] [2022-11-02 20:34:56,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:56,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:56,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:56,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771141614] [2022-11-02 20:34:56,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771141614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:56,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:56,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:34:56,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260861617] [2022-11-02 20:34:56,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:56,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:34:56,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:34:56,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:34:56,929 INFO L87 Difference]: Start difference. First operand 22893 states and 38666 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:58,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:58,766 INFO L93 Difference]: Finished difference Result 67879 states and 114783 transitions. [2022-11-02 20:34:58,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:34:58,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2022-11-02 20:34:58,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:58,907 INFO L225 Difference]: With dead ends: 67879 [2022-11-02 20:34:58,907 INFO L226 Difference]: Without dead ends: 45537 [2022-11-02 20:34:58,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:58,943 INFO L413 NwaCegarLoop]: 1290 mSDtfsCounter, 957 mSDsluCounter, 2851 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:58,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 4141 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:34:58,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45537 states. [2022-11-02 20:35:00,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45537 to 34145. [2022-11-02 20:35:00,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34145 states, 34144 states have (on average 1.6870899718837864) internal successors, (57604), 34144 states have internal predecessors, (57604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:00,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34145 states to 34145 states and 57604 transitions. [2022-11-02 20:35:00,962 INFO L78 Accepts]: Start accepts. Automaton has 34145 states and 57604 transitions. Word has length 240 [2022-11-02 20:35:00,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:00,963 INFO L495 AbstractCegarLoop]: Abstraction has 34145 states and 57604 transitions. [2022-11-02 20:35:00,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand 34145 states and 57604 transitions. [2022-11-02 20:35:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-02 20:35:00,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:00,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:00,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:35:00,984 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:00,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:00,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1477358553, now seen corresponding path program 1 times [2022-11-02 20:35:00,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:00,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096618799] [2022-11-02 20:35:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:00,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:01,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:01,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096618799] [2022-11-02 20:35:01,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096618799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:01,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:01,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:35:01,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021409247] [2022-11-02 20:35:01,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:01,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:35:01,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:35:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:35:01,190 INFO L87 Difference]: Start difference. First operand 34145 states and 57604 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:02,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:02,997 INFO L93 Difference]: Finished difference Result 76412 states and 129194 transitions. [2022-11-02 20:35:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:35:02,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2022-11-02 20:35:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:03,137 INFO L225 Difference]: With dead ends: 76412 [2022-11-02 20:35:03,138 INFO L226 Difference]: Without dead ends: 53073 [2022-11-02 20:35:03,178 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 [2022-11-02 20:35:03,179 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 302 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:03,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 2813 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:35:03,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53073 states. [2022-11-02 20:35:05,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53073 to 53071. [2022-11-02 20:35:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53071 states, 53070 states have (on average 1.684680610514415) internal successors, (89406), 53070 states have internal predecessors, (89406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53071 states to 53071 states and 89406 transitions. [2022-11-02 20:35:05,510 INFO L78 Accepts]: Start accepts. Automaton has 53071 states and 89406 transitions. Word has length 241 [2022-11-02 20:35:05,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:05,511 INFO L495 AbstractCegarLoop]: Abstraction has 53071 states and 89406 transitions. [2022-11-02 20:35:05,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:05,517 INFO L276 IsEmpty]: Start isEmpty. Operand 53071 states and 89406 transitions. [2022-11-02 20:35:05,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-02 20:35:05,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:05,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:05,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:35:05,529 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:05,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash 384077095, now seen corresponding path program 1 times [2022-11-02 20:35:05,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:05,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930710797] [2022-11-02 20:35:05,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:05,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:05,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:05,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930710797] [2022-11-02 20:35:05,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930710797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:05,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:05,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:35:05,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611815696] [2022-11-02 20:35:05,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:05,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:35:05,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:05,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:35:05,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:35:05,802 INFO L87 Difference]: Start difference. First operand 53071 states and 89406 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:08,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:08,414 INFO L93 Difference]: Finished difference Result 118198 states and 199124 transitions. [2022-11-02 20:35:08,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:35:08,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2022-11-02 20:35:08,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:08,586 INFO L225 Difference]: With dead ends: 118198 [2022-11-02 20:35:08,586 INFO L226 Difference]: Without dead ends: 81957 [2022-11-02 20:35:08,642 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 [2022-11-02 20:35:08,645 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 294 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:08,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 2790 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:35:08,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81957 states. [2022-11-02 20:35:11,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81957 to 81955. [2022-11-02 20:35:11,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81955 states, 81954 states have (on average 1.6790760670620104) internal successors, (137607), 81954 states have internal predecessors, (137607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81955 states to 81955 states and 137607 transitions. [2022-11-02 20:35:11,865 INFO L78 Accepts]: Start accepts. Automaton has 81955 states and 137607 transitions. Word has length 241 [2022-11-02 20:35:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:11,866 INFO L495 AbstractCegarLoop]: Abstraction has 81955 states and 137607 transitions. [2022-11-02 20:35:11,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:11,866 INFO L276 IsEmpty]: Start isEmpty. Operand 81955 states and 137607 transitions. [2022-11-02 20:35:11,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-02 20:35:11,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:11,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:11,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:35:11,873 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:11,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:11,873 INFO L85 PathProgramCache]: Analyzing trace with hash 698928679, now seen corresponding path program 1 times [2022-11-02 20:35:11,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:11,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330573735] [2022-11-02 20:35:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:11,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:12,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:12,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330573735] [2022-11-02 20:35:12,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330573735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:12,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:12,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:35:12,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532190669] [2022-11-02 20:35:12,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:12,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:35:12,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:12,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:35:12,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:35:12,123 INFO L87 Difference]: Start difference. First operand 81955 states and 137607 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:16,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:16,556 INFO L93 Difference]: Finished difference Result 182131 states and 305803 transitions. [2022-11-02 20:35:16,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:35:16,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2022-11-02 20:35:16,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:16,794 INFO L225 Difference]: With dead ends: 182131 [2022-11-02 20:35:16,795 INFO L226 Difference]: Without dead ends: 125892 [2022-11-02 20:35:16,835 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 [2022-11-02 20:35:16,836 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 286 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:16,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 2759 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:35:16,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125892 states. [2022-11-02 20:35:22,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125892 to 125890. [2022-11-02 20:35:22,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125890 states, 125889 states have (on average 1.6726719570415207) internal successors, (210571), 125889 states have internal predecessors, (210571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:22,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125890 states to 125890 states and 210571 transitions. [2022-11-02 20:35:22,503 INFO L78 Accepts]: Start accepts. Automaton has 125890 states and 210571 transitions. Word has length 241 [2022-11-02 20:35:22,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:22,504 INFO L495 AbstractCegarLoop]: Abstraction has 125890 states and 210571 transitions. [2022-11-02 20:35:22,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:22,504 INFO L276 IsEmpty]: Start isEmpty. Operand 125890 states and 210571 transitions. [2022-11-02 20:35:22,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-02 20:35:22,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:22,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:22,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:35:22,508 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:22,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:22,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1094586151, now seen corresponding path program 1 times [2022-11-02 20:35:22,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:22,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716428909] [2022-11-02 20:35:22,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:22,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:23,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:23,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716428909] [2022-11-02 20:35:23,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716428909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:23,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:23,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:35:23,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017278758] [2022-11-02 20:35:23,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:23,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:35:23,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:23,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:35:23,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:35:23,063 INFO L87 Difference]: Start difference. First operand 125890 states and 210571 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:29,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:29,129 INFO L93 Difference]: Finished difference Result 244815 states and 409707 transitions. [2022-11-02 20:35:29,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:35:29,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2022-11-02 20:35:29,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:29,476 INFO L225 Difference]: With dead ends: 244815 [2022-11-02 20:35:29,476 INFO L226 Difference]: Without dead ends: 177362 [2022-11-02 20:35:29,555 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 [2022-11-02 20:35:29,558 INFO L413 NwaCegarLoop]: 1475 mSDtfsCounter, 278 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:29,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 2729 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:35:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177362 states.