./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.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_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/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_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/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_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/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 b7a355896b8b65b5a2cb80c69f28000f566073d33b0003da7d28a637c6d5db6a --- 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 20:44:33,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:44:33,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:44:33,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:44:33,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:44:33,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:44:33,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:44:33,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:44:33,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:44:33,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:44:33,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:44:33,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:44:33,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:44:33,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:44:33,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:44:33,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:44:33,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:44:33,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:44:33,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:44:33,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:44:33,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:44:33,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:44:33,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:44:33,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:44:34,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:44:34,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:44:34,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:44:34,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:44:34,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:44:34,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:44:34,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:44:34,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:44:34,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:44:34,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:44:34,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:44:34,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:44:34,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:44:34,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:44:34,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:44:34,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:44:34,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:44:34,022 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:44:34,064 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:44:34,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:44:34,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:44:34,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:44:34,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:44:34,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:44:34,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:44:34,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:44:34,067 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:44:34,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:44:34,068 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:44:34,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:44:34,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:44:34,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:44:34,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:44:34,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:44:34,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:44:34,069 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:44:34,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:44:34,070 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:44:34,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:44:34,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:44:34,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:44:34,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:44:34,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:44:34,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:44:34,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:44:34,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:44:34,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:44:34,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:44:34,072 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:44:34,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:44:34,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:44:34,073 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_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7a355896b8b65b5a2cb80c69f28000f566073d33b0003da7d28a637c6d5db6a [2022-11-02 20:44:34,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:44:34,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:44:34,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:44:34,368 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:44:34,369 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:44:34,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2022-11-02 20:44:34,456 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/bin/uautomizer-Dbtcem3rbc/data/eaa263008/417e49715d97488192031ec1bed838dd/FLAG660bb5b51 [2022-11-02 20:44:34,954 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:44:34,955 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2022-11-02 20:44:34,966 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/bin/uautomizer-Dbtcem3rbc/data/eaa263008/417e49715d97488192031ec1bed838dd/FLAG660bb5b51 [2022-11-02 20:44:35,434 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/bin/uautomizer-Dbtcem3rbc/data/eaa263008/417e49715d97488192031ec1bed838dd [2022-11-02 20:44:35,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:44:35,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:44:35,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:44:35,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:44:35,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:44:35,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:44:35" (1/1) ... [2022-11-02 20:44:35,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dfb5cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:35, skipping insertion in model container [2022-11-02 20:44:35,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:44:35" (1/1) ... [2022-11-02 20:44:35,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:44:35,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:44:35,782 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_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c[12968,12981] [2022-11-02 20:44:35,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:44:35,795 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:44:35,846 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_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c[12968,12981] [2022-11-02 20:44:35,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:44:35,862 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:44:35,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:35 WrapperNode [2022-11-02 20:44:35,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:44:35,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:44:35,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:44:35,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:44:35,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:35" (1/1) ... [2022-11-02 20:44:35,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:35" (1/1) ... [2022-11-02 20:44:35,910 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 443 [2022-11-02 20:44:35,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:44:35,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:44:35,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:44:35,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:44:35,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:35" (1/1) ... [2022-11-02 20:44:35,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:35" (1/1) ... [2022-11-02 20:44:35,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:35" (1/1) ... [2022-11-02 20:44:35,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:35" (1/1) ... [2022-11-02 20:44:35,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:35" (1/1) ... [2022-11-02 20:44:35,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:35" (1/1) ... [2022-11-02 20:44:35,945 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:35" (1/1) ... [2022-11-02 20:44:35,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:35" (1/1) ... [2022-11-02 20:44:35,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:44:35,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:44:35,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:44:35,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:44:35,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:35" (1/1) ... [2022-11-02 20:44:35,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:44:35,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:35,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:44:36,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1fc720-f6e8-4111-b51f-f6c5fab3eba9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:44:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:44:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:44:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:44:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:44:36,142 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:44:36,144 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:44:36,810 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:44:36,818 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:44:36,818 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:44:36,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:36 BoogieIcfgContainer [2022-11-02 20:44:36,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:44:36,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:44:36,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:44:36,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:44:36,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:44:35" (1/3) ... [2022-11-02 20:44:36,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c29a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:44:36, skipping insertion in model container [2022-11-02 20:44:36,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:35" (2/3) ... [2022-11-02 20:44:36,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c29a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:44:36, skipping insertion in model container [2022-11-02 20:44:36,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:36" (3/3) ... [2022-11-02 20:44:36,836 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2022-11-02 20:44:36,857 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:44:36,857 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:44:36,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:44:36,913 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;@4c780df5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:44:36,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:44:36,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 136 states have internal predecessors, (236), 0 states have call successors, (0), 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 20:44:36,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 20:44:36,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:36,930 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] [2022-11-02 20:44:36,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:36,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:36,936 INFO L85 PathProgramCache]: Analyzing trace with hash 298975739, now seen corresponding path program 1 times [2022-11-02 20:44:36,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:36,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194402613] [2022-11-02 20:44:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:36,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:37,251 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 20:44:37,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:37,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194402613] [2022-11-02 20:44:37,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194402613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:37,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:37,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:37,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151999988] [2022-11-02 20:44:37,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:37,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:44:37,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:37,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:44:37,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:44:37,302 INFO L87 Difference]: Start difference. First operand has 137 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 136 states have internal predecessors, (236), 0 states have call successors, (0), 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 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 20:44:37,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:37,357 INFO L93 Difference]: Finished difference Result 214 states and 367 transitions. [2022-11-02 20:44:37,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:44:37,360 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-02 20:44:37,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:37,379 INFO L225 Difference]: With dead ends: 214 [2022-11-02 20:44:37,380 INFO L226 Difference]: Without dead ends: 133 [2022-11-02 20:44:37,385 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 20:44:37,392 INFO L413 NwaCegarLoop]: 229 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, 229 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 20:44:37,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:37,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-02 20:44:37,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-11-02 20:44:37,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.7348484848484849) internal successors, (229), 132 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 20:44:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 229 transitions. [2022-11-02 20:44:37,460 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 229 transitions. Word has length 37 [2022-11-02 20:44:37,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:37,461 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 229 transitions. [2022-11-02 20:44:37,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 20:44:37,462 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 229 transitions. [2022-11-02 20:44:37,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 20:44:37,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:37,466 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] [2022-11-02 20:44:37,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:44:37,467 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:37,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:37,467 INFO L85 PathProgramCache]: Analyzing trace with hash -518672711, now seen corresponding path program 1 times [2022-11-02 20:44:37,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:37,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694798720] [2022-11-02 20:44:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:37,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:37,804 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 20:44:37,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:37,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694798720] [2022-11-02 20:44:37,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694798720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:37,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:37,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:44:37,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840338932] [2022-11-02 20:44:37,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:37,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:44:37,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:37,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:44:37,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:44:37,820 INFO L87 Difference]: Start difference. First operand 133 states and 229 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 20:44:37,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:37,936 INFO L93 Difference]: Finished difference Result 213 states and 360 transitions. [2022-11-02 20:44:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:44:37,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-02 20:44:37,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:37,938 INFO L225 Difference]: With dead ends: 213 [2022-11-02 20:44:37,938 INFO L226 Difference]: Without dead ends: 133 [2022-11-02 20:44:37,938 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 20:44:37,940 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 3 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:37,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 878 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:37,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-02 20:44:37,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-11-02 20:44:37,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.5303030303030303) internal successors, (202), 132 states have internal predecessors, (202), 0 states have call successors, (0), 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 20:44:37,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 202 transitions. [2022-11-02 20:44:37,948 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 202 transitions. Word has length 37 [2022-11-02 20:44:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:37,948 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 202 transitions. [2022-11-02 20:44:37,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 20:44:37,949 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 202 transitions. [2022-11-02 20:44:37,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 20:44:37,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:37,951 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] [2022-11-02 20:44:37,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:44:37,951 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:37,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:37,952 INFO L85 PathProgramCache]: Analyzing trace with hash -707453694, now seen corresponding path program 1 times [2022-11-02 20:44:37,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:37,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300483353] [2022-11-02 20:44:37,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:37,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:38,084 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 20:44:38,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:38,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300483353] [2022-11-02 20:44:38,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300483353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:38,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:38,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:44:38,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343212943] [2022-11-02 20:44:38,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:38,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:38,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:38,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:38,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:38,091 INFO L87 Difference]: Start difference. First operand 133 states and 202 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 20:44:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:38,158 INFO L93 Difference]: Finished difference Result 276 states and 439 transitions. [2022-11-02 20:44:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:38,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-11-02 20:44:38,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:38,163 INFO L225 Difference]: With dead ends: 276 [2022-11-02 20:44:38,163 INFO L226 Difference]: Without dead ends: 200 [2022-11-02 20:44:38,164 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 20:44:38,172 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 101 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:38,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 355 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:38,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-02 20:44:38,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 197. [2022-11-02 20:44:38,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.5510204081632653) internal successors, (304), 196 states have internal predecessors, (304), 0 states have call successors, (0), 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 20:44:38,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 304 transitions. [2022-11-02 20:44:38,200 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 304 transitions. Word has length 63 [2022-11-02 20:44:38,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:38,201 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 304 transitions. [2022-11-02 20:44:38,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 20:44:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 304 transitions. [2022-11-02 20:44:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:44:38,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:38,209 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] [2022-11-02 20:44:38,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:44:38,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:38,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:38,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1995563601, now seen corresponding path program 1 times [2022-11-02 20:44:38,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:38,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553964322] [2022-11-02 20:44:38,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:38,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:38,384 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 20:44:38,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:38,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553964322] [2022-11-02 20:44:38,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553964322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:38,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:38,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:44:38,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379628441] [2022-11-02 20:44:38,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:38,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:38,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:38,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:38,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:38,387 INFO L87 Difference]: Start difference. First operand 197 states and 304 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 20:44:38,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:38,456 INFO L93 Difference]: Finished difference Result 463 states and 736 transitions. [2022-11-02 20:44:38,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:38,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-11-02 20:44:38,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:38,461 INFO L225 Difference]: With dead ends: 463 [2022-11-02 20:44:38,461 INFO L226 Difference]: Without dead ends: 323 [2022-11-02 20:44:38,466 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 20:44:38,476 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 103 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 368 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 20:44:38,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 368 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:38,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-02 20:44:38,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2022-11-02 20:44:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.5723270440251573) internal successors, (500), 318 states have internal predecessors, (500), 0 states have call successors, (0), 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 20:44:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 500 transitions. [2022-11-02 20:44:38,514 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 500 transitions. Word has length 65 [2022-11-02 20:44:38,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:38,514 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 500 transitions. [2022-11-02 20:44:38,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 20:44:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 500 transitions. [2022-11-02 20:44:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 20:44:38,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:38,516 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] [2022-11-02 20:44:38,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:44:38,517 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:38,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:38,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2137075392, now seen corresponding path program 1 times [2022-11-02 20:44:38,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:38,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511581136] [2022-11-02 20:44:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:38,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:38,697 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 20:44:38,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:38,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511581136] [2022-11-02 20:44:38,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511581136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:38,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:38,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:44:38,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665838366] [2022-11-02 20:44:38,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:38,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:38,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:38,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:38,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:38,703 INFO L87 Difference]: Start difference. First operand 319 states and 500 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 20:44:38,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:38,768 INFO L93 Difference]: Finished difference Result 815 states and 1298 transitions. [2022-11-02 20:44:38,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:38,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-02 20:44:38,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:38,773 INFO L225 Difference]: With dead ends: 815 [2022-11-02 20:44:38,773 INFO L226 Difference]: Without dead ends: 553 [2022-11-02 20:44:38,775 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 20:44:38,775 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 97 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 369 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 20:44:38,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 369 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:38,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-02 20:44:38,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 547. [2022-11-02 20:44:38,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 1.575091575091575) internal successors, (860), 546 states have internal predecessors, (860), 0 states have call successors, (0), 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 20:44:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 860 transitions. [2022-11-02 20:44:38,813 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 860 transitions. Word has length 67 [2022-11-02 20:44:38,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:38,815 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 860 transitions. [2022-11-02 20:44:38,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 20:44:38,818 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 860 transitions. [2022-11-02 20:44:38,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-02 20:44:38,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:38,822 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] [2022-11-02 20:44:38,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:44:38,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:38,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:38,822 INFO L85 PathProgramCache]: Analyzing trace with hash -544230961, now seen corresponding path program 1 times [2022-11-02 20:44:38,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:38,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482969918] [2022-11-02 20:44:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:38,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:39,016 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 20:44:39,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:39,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482969918] [2022-11-02 20:44:39,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482969918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:39,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:39,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:44:39,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467001337] [2022-11-02 20:44:39,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:39,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:44:39,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:39,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:44:39,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:44:39,018 INFO L87 Difference]: Start difference. First operand 547 states and 860 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 20:44:39,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:39,214 INFO L93 Difference]: Finished difference Result 2339 states and 3782 transitions. [2022-11-02 20:44:39,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:44:39,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-11-02 20:44:39,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:39,225 INFO L225 Difference]: With dead ends: 2339 [2022-11-02 20:44:39,225 INFO L226 Difference]: Without dead ends: 1849 [2022-11-02 20:44:39,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:44:39,230 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 861 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:39,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1129 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:39,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2022-11-02 20:44:39,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 975. [2022-11-02 20:44:39,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.5882956878850103) internal successors, (1547), 974 states have internal predecessors, (1547), 0 states have call successors, (0), 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 20:44:39,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1547 transitions. [2022-11-02 20:44:39,294 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1547 transitions. Word has length 69 [2022-11-02 20:44:39,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:39,295 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1547 transitions. [2022-11-02 20:44:39,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 20:44:39,296 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1547 transitions. [2022-11-02 20:44:39,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 20:44:39,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:39,297 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] [2022-11-02 20:44:39,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:44:39,297 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:39,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:39,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1614123231, now seen corresponding path program 1 times [2022-11-02 20:44:39,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:39,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772684019] [2022-11-02 20:44:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:39,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:39,394 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 20:44:39,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:39,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772684019] [2022-11-02 20:44:39,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772684019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:39,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:39,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:44:39,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202406829] [2022-11-02 20:44:39,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:39,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:39,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:39,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:39,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:44:39,396 INFO L87 Difference]: Start difference. First operand 975 states and 1547 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 20:44:39,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:39,548 INFO L93 Difference]: Finished difference Result 2837 states and 4577 transitions. [2022-11-02 20:44:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:44:39,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-02 20:44:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:39,557 INFO L225 Difference]: With dead ends: 2837 [2022-11-02 20:44:39,557 INFO L226 Difference]: Without dead ends: 1919 [2022-11-02 20:44:39,559 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 20:44:39,561 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 365 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:39,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 585 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:39,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2022-11-02 20:44:39,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1438. [2022-11-02 20:44:39,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 1.5984690327070286) internal successors, (2297), 1437 states have internal predecessors, (2297), 0 states have call successors, (0), 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 20:44:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2297 transitions. [2022-11-02 20:44:39,641 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2297 transitions. Word has length 70 [2022-11-02 20:44:39,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:39,641 INFO L495 AbstractCegarLoop]: Abstraction has 1438 states and 2297 transitions. [2022-11-02 20:44:39,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 20:44:39,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2297 transitions. [2022-11-02 20:44:39,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:44:39,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:39,643 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] [2022-11-02 20:44:39,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:44:39,644 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:39,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:39,644 INFO L85 PathProgramCache]: Analyzing trace with hash -252040890, now seen corresponding path program 1 times [2022-11-02 20:44:39,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:39,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795684897] [2022-11-02 20:44:39,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:39,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:39,750 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 20:44:39,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:39,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795684897] [2022-11-02 20:44:39,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795684897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:39,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:39,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:44:39,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132219245] [2022-11-02 20:44:39,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:39,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:39,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:39,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:39,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:44:39,752 INFO L87 Difference]: Start difference. First operand 1438 states and 2297 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 20:44:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:39,938 INFO L93 Difference]: Finished difference Result 4165 states and 6715 transitions. [2022-11-02 20:44:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:44:39,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-11-02 20:44:39,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:39,948 INFO L225 Difference]: With dead ends: 4165 [2022-11-02 20:44:39,949 INFO L226 Difference]: Without dead ends: 2784 [2022-11-02 20:44:39,951 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 20:44:39,952 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 363 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 661 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 20:44:39,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 661 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:39,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2022-11-02 20:44:40,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2099. [2022-11-02 20:44:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 2098 states have (on average 1.5986653956148713) internal successors, (3354), 2098 states have internal predecessors, (3354), 0 states have call successors, (0), 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 20:44:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 3354 transitions. [2022-11-02 20:44:40,103 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 3354 transitions. Word has length 71 [2022-11-02 20:44:40,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:40,104 INFO L495 AbstractCegarLoop]: Abstraction has 2099 states and 3354 transitions. [2022-11-02 20:44:40,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 20:44:40,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 3354 transitions. [2022-11-02 20:44:40,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-02 20:44:40,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:40,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:40,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:44:40,110 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:40,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:40,110 INFO L85 PathProgramCache]: Analyzing trace with hash -630566449, now seen corresponding path program 1 times [2022-11-02 20:44:40,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:40,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131115760] [2022-11-02 20:44:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:40,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:40,174 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 20:44:40,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:40,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131115760] [2022-11-02 20:44:40,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131115760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:40,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:40,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:44:40,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844603666] [2022-11-02 20:44:40,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:40,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:40,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:40,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:40,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:40,178 INFO L87 Difference]: Start difference. First operand 2099 states and 3354 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 20:44:40,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:40,363 INFO L93 Difference]: Finished difference Result 4342 states and 6948 transitions. [2022-11-02 20:44:40,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:40,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-11-02 20:44:40,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:40,375 INFO L225 Difference]: With dead ends: 4342 [2022-11-02 20:44:40,375 INFO L226 Difference]: Without dead ends: 3126 [2022-11-02 20:44:40,379 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 20:44:40,382 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 96 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 415 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 20:44:40,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 415 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:40,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2022-11-02 20:44:40,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3124. [2022-11-02 20:44:40,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 3123 states have (on average 1.585014409221902) internal successors, (4950), 3123 states have internal predecessors, (4950), 0 states have call successors, (0), 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 20:44:40,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 4950 transitions. [2022-11-02 20:44:40,581 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 4950 transitions. Word has length 72 [2022-11-02 20:44:40,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:40,581 INFO L495 AbstractCegarLoop]: Abstraction has 3124 states and 4950 transitions. [2022-11-02 20:44:40,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 20:44:40,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 4950 transitions. [2022-11-02 20:44:40,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-02 20:44:40,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:40,583 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] [2022-11-02 20:44:40,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:44:40,584 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:40,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash -808156936, now seen corresponding path program 1 times [2022-11-02 20:44:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:40,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306471986] [2022-11-02 20:44:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:40,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:40,700 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 20:44:40,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:40,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306471986] [2022-11-02 20:44:40,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306471986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:40,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:40,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:44:40,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693599087] [2022-11-02 20:44:40,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:40,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:40,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:40,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:40,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:44:40,704 INFO L87 Difference]: Start difference. First operand 3124 states and 4950 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 20:44:41,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:41,077 INFO L93 Difference]: Finished difference Result 9396 states and 15009 transitions. [2022-11-02 20:44:41,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:44:41,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-11-02 20:44:41,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:41,098 INFO L225 Difference]: With dead ends: 9396 [2022-11-02 20:44:41,098 INFO L226 Difference]: Without dead ends: 6460 [2022-11-02 20:44:41,102 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 20:44:41,103 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 361 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 661 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 20:44:41,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 661 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:41,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6460 states. [2022-11-02 20:44:41,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6460 to 4776. [2022-11-02 20:44:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4776 states, 4775 states have (on average 1.584083769633508) internal successors, (7564), 4775 states have internal predecessors, (7564), 0 states have call successors, (0), 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 20:44:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4776 states to 4776 states and 7564 transitions. [2022-11-02 20:44:41,451 INFO L78 Accepts]: Start accepts. Automaton has 4776 states and 7564 transitions. Word has length 72 [2022-11-02 20:44:41,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:41,451 INFO L495 AbstractCegarLoop]: Abstraction has 4776 states and 7564 transitions. [2022-11-02 20:44:41,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 20:44:41,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4776 states and 7564 transitions. [2022-11-02 20:44:41,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-02 20:44:41,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:41,453 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] [2022-11-02 20:44:41,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:44:41,454 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:41,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:41,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1968035874, now seen corresponding path program 1 times [2022-11-02 20:44:41,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:41,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44094363] [2022-11-02 20:44:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:41,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:41,523 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 20:44:41,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:41,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44094363] [2022-11-02 20:44:41,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44094363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:41,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:41,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:44:41,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13787169] [2022-11-02 20:44:41,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:41,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:41,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:41,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:41,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:41,526 INFO L87 Difference]: Start difference. First operand 4776 states and 7564 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 20:44:41,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:41,936 INFO L93 Difference]: Finished difference Result 10472 states and 16650 transitions. [2022-11-02 20:44:41,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:41,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-11-02 20:44:41,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:41,983 INFO L225 Difference]: With dead ends: 10472 [2022-11-02 20:44:41,983 INFO L226 Difference]: Without dead ends: 7115 [2022-11-02 20:44:42,011 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 20:44:42,012 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 102 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 443 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 20:44:42,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 443 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:42,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7115 states. [2022-11-02 20:44:42,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7115 to 7113. [2022-11-02 20:44:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7113 states, 7112 states have (on average 1.5752249718785152) internal successors, (11203), 7112 states have internal predecessors, (11203), 0 states have call successors, (0), 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 20:44:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7113 states to 7113 states and 11203 transitions. [2022-11-02 20:44:42,452 INFO L78 Accepts]: Start accepts. Automaton has 7113 states and 11203 transitions. Word has length 72 [2022-11-02 20:44:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:42,453 INFO L495 AbstractCegarLoop]: Abstraction has 7113 states and 11203 transitions. [2022-11-02 20:44:42,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 20:44:42,453 INFO L276 IsEmpty]: Start isEmpty. Operand 7113 states and 11203 transitions. [2022-11-02 20:44:42,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-02 20:44:42,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:42,454 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] [2022-11-02 20:44:42,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:44:42,455 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:42,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:42,456 INFO L85 PathProgramCache]: Analyzing trace with hash 134390635, now seen corresponding path program 1 times [2022-11-02 20:44:42,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:42,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577432191] [2022-11-02 20:44:42,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:42,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:42,504 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 20:44:42,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:42,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577432191] [2022-11-02 20:44:42,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577432191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:42,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:42,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:44:42,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879580143] [2022-11-02 20:44:42,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:42,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:42,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:42,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:42,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:42,507 INFO L87 Difference]: Start difference. First operand 7113 states and 11203 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 20:44:43,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:43,125 INFO L93 Difference]: Finished difference Result 15869 states and 25266 transitions. [2022-11-02 20:44:43,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:43,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-11-02 20:44:43,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:43,163 INFO L225 Difference]: With dead ends: 15869 [2022-11-02 20:44:43,163 INFO L226 Difference]: Without dead ends: 10691 [2022-11-02 20:44:43,171 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 20:44:43,172 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 108 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 464 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 20:44:43,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 464 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:43,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10691 states. [2022-11-02 20:44:43,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10691 to 10689. [2022-11-02 20:44:43,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10689 states, 10688 states have (on average 1.5716691616766467) internal successors, (16798), 10688 states have internal predecessors, (16798), 0 states have call successors, (0), 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 20:44:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10689 states to 10689 states and 16798 transitions. [2022-11-02 20:44:43,929 INFO L78 Accepts]: Start accepts. Automaton has 10689 states and 16798 transitions. Word has length 72 [2022-11-02 20:44:43,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:43,929 INFO L495 AbstractCegarLoop]: Abstraction has 10689 states and 16798 transitions. [2022-11-02 20:44:43,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 20:44:43,930 INFO L276 IsEmpty]: Start isEmpty. Operand 10689 states and 16798 transitions. [2022-11-02 20:44:43,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 20:44:43,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:43,931 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] [2022-11-02 20:44:43,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:44:43,931 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:43,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:43,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1377255792, now seen corresponding path program 1 times [2022-11-02 20:44:43,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:43,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464088040] [2022-11-02 20:44:43,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:43,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:44,114 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 20:44:44,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:44,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464088040] [2022-11-02 20:44:44,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464088040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:44,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:44,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:44:44,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50886726] [2022-11-02 20:44:44,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:44,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:44:44,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:44,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:44:44,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:44:44,117 INFO L87 Difference]: Start difference. First operand 10689 states and 16798 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 20:44:44,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:44,894 INFO L93 Difference]: Finished difference Result 21301 states and 33492 transitions. [2022-11-02 20:44:44,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:44:44,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-11-02 20:44:44,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:44,919 INFO L225 Difference]: With dead ends: 21301 [2022-11-02 20:44:44,919 INFO L226 Difference]: Without dead ends: 10691 [2022-11-02 20:44:44,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:44:44,928 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 362 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:44,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 543 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:44,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10691 states. [2022-11-02 20:44:45,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10691 to 10689. [2022-11-02 20:44:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10689 states, 10688 states have (on average 1.5599738023952097) internal successors, (16673), 10688 states have internal predecessors, (16673), 0 states have call successors, (0), 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 20:44:45,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10689 states to 10689 states and 16673 transitions. [2022-11-02 20:44:45,701 INFO L78 Accepts]: Start accepts. Automaton has 10689 states and 16673 transitions. Word has length 74 [2022-11-02 20:44:45,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:45,701 INFO L495 AbstractCegarLoop]: Abstraction has 10689 states and 16673 transitions. [2022-11-02 20:44:45,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 20:44:45,702 INFO L276 IsEmpty]: Start isEmpty. Operand 10689 states and 16673 transitions. [2022-11-02 20:44:45,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 20:44:45,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:45,704 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] [2022-11-02 20:44:45,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:44:45,704 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:45,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:45,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1698241801, now seen corresponding path program 1 times [2022-11-02 20:44:45,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:45,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753886347] [2022-11-02 20:44:45,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:45,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:45,957 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 20:44:45,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:45,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753886347] [2022-11-02 20:44:45,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753886347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:45,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:45,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:44:45,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278999813] [2022-11-02 20:44:45,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:45,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:44:45,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:45,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:44:45,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:44:45,961 INFO L87 Difference]: Start difference. First operand 10689 states and 16673 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 20:44:47,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:47,226 INFO L93 Difference]: Finished difference Result 30615 states and 47912 transitions. [2022-11-02 20:44:47,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:44:47,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-11-02 20:44:47,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:47,275 INFO L225 Difference]: With dead ends: 30615 [2022-11-02 20:44:47,275 INFO L226 Difference]: Without dead ends: 20005 [2022-11-02 20:44:47,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:44:47,286 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 356 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:47,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 547 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:47,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20005 states. [2022-11-02 20:44:48,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20005 to 20003. [2022-11-02 20:44:48,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20003 states, 20002 states have (on average 1.5475452454754524) internal successors, (30954), 20002 states have internal predecessors, (30954), 0 states have call successors, (0), 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 20:44:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20003 states to 20003 states and 30954 transitions. [2022-11-02 20:44:48,430 INFO L78 Accepts]: Start accepts. Automaton has 20003 states and 30954 transitions. Word has length 77 [2022-11-02 20:44:48,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:48,431 INFO L495 AbstractCegarLoop]: Abstraction has 20003 states and 30954 transitions. [2022-11-02 20:44:48,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 20:44:48,431 INFO L276 IsEmpty]: Start isEmpty. Operand 20003 states and 30954 transitions. [2022-11-02 20:44:48,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-02 20:44:48,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:48,434 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] [2022-11-02 20:44:48,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:44:48,434 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:48,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:48,435 INFO L85 PathProgramCache]: Analyzing trace with hash 677312633, now seen corresponding path program 1 times [2022-11-02 20:44:48,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:48,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338118454] [2022-11-02 20:44:48,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:48,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:48,730 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 20:44:48,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:48,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338118454] [2022-11-02 20:44:48,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338118454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:48,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:48,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:44:48,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252680821] [2022-11-02 20:44:48,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:48,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:44:48,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:48,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:44:48,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:44:48,733 INFO L87 Difference]: Start difference. First operand 20003 states and 30954 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 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 20:44:51,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:51,415 INFO L93 Difference]: Finished difference Result 39191 states and 60008 transitions. [2022-11-02 20:44:51,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:44:51,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-11-02 20:44:51,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:51,506 INFO L225 Difference]: With dead ends: 39191 [2022-11-02 20:44:51,506 INFO L226 Difference]: Without dead ends: 39189 [2022-11-02 20:44:51,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:44:51,514 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 917 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:51,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 1064 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39189 states. [2022-11-02 20:44:52,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39189 to 21089. [2022-11-02 20:44:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21089 states, 21088 states have (on average 1.518920713201821) internal successors, (32031), 21088 states have internal predecessors, (32031), 0 states have call successors, (0), 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 20:44:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21089 states to 21089 states and 32031 transitions. [2022-11-02 20:44:53,052 INFO L78 Accepts]: Start accepts. Automaton has 21089 states and 32031 transitions. Word has length 78 [2022-11-02 20:44:53,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:53,053 INFO L495 AbstractCegarLoop]: Abstraction has 21089 states and 32031 transitions. [2022-11-02 20:44:53,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 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 20:44:53,053 INFO L276 IsEmpty]: Start isEmpty. Operand 21089 states and 32031 transitions. [2022-11-02 20:44:53,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-02 20:44:53,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:53,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:53,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:44:53,056 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:53,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:53,056 INFO L85 PathProgramCache]: Analyzing trace with hash -931565963, now seen corresponding path program 1 times [2022-11-02 20:44:53,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:53,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469569093] [2022-11-02 20:44:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:53,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:44:53,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:53,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469569093] [2022-11-02 20:44:53,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469569093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:53,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:53,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:44:53,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405695921] [2022-11-02 20:44:53,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:53,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:44:53,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:53,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:44:53,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:44:53,202 INFO L87 Difference]: Start difference. First operand 21089 states and 32031 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 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 20:44:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:55,815 INFO L93 Difference]: Finished difference Result 51599 states and 78693 transitions. [2022-11-02 20:44:55,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:44:55,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 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 105 [2022-11-02 20:44:55,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:55,896 INFO L225 Difference]: With dead ends: 51599 [2022-11-02 20:44:55,896 INFO L226 Difference]: Without dead ends: 41597 [2022-11-02 20:44:55,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:55,914 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 463 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:55,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 831 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:55,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41597 states. [2022-11-02 20:44:58,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41597 to 32429. [2022-11-02 20:44:58,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32429 states, 32428 states have (on average 1.5179782903663501) internal successors, (49225), 32428 states have internal predecessors, (49225), 0 states have call successors, (0), 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 20:44:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32429 states to 32429 states and 49225 transitions. [2022-11-02 20:44:58,360 INFO L78 Accepts]: Start accepts. Automaton has 32429 states and 49225 transitions. Word has length 105 [2022-11-02 20:44:58,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:58,363 INFO L495 AbstractCegarLoop]: Abstraction has 32429 states and 49225 transitions. [2022-11-02 20:44:58,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 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 20:44:58,363 INFO L276 IsEmpty]: Start isEmpty. Operand 32429 states and 49225 transitions. [2022-11-02 20:44:58,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-02 20:44:58,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:58,367 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:58,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:44:58,367 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:58,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2025931908, now seen corresponding path program 1 times [2022-11-02 20:44:58,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:58,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525637745] [2022-11-02 20:44:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:58,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:44:58,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:58,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525637745] [2022-11-02 20:44:58,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525637745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:58,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:58,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:44:58,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963485540] [2022-11-02 20:44:58,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:58,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:44:58,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:58,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:44:58,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:44:58,556 INFO L87 Difference]: Start difference. First operand 32429 states and 49225 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 20:45:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:01,443 INFO L93 Difference]: Finished difference Result 55607 states and 84829 transitions. [2022-11-02 20:45:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:45:01,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 105 [2022-11-02 20:45:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:01,519 INFO L225 Difference]: With dead ends: 55607 [2022-11-02 20:45:01,520 INFO L226 Difference]: Without dead ends: 45605 [2022-11-02 20:45:01,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:45:01,540 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 457 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:01,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 891 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:45:01,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45605 states. [2022-11-02 20:45:04,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45605 to 43951. [2022-11-02 20:45:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43951 states, 43950 states have (on average 1.5191581342434586) internal successors, (66767), 43950 states have internal predecessors, (66767), 0 states have call successors, (0), 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 20:45:04,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43951 states to 43951 states and 66767 transitions. [2022-11-02 20:45:04,839 INFO L78 Accepts]: Start accepts. Automaton has 43951 states and 66767 transitions. Word has length 105 [2022-11-02 20:45:04,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:04,840 INFO L495 AbstractCegarLoop]: Abstraction has 43951 states and 66767 transitions. [2022-11-02 20:45:04,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 20:45:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 43951 states and 66767 transitions. [2022-11-02 20:45:04,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-02 20:45:04,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:04,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:04,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:45:04,846 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:04,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:04,847 INFO L85 PathProgramCache]: Analyzing trace with hash -166608879, now seen corresponding path program 1 times [2022-11-02 20:45:04,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:04,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645413148] [2022-11-02 20:45:04,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:04,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:45:04,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:04,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645413148] [2022-11-02 20:45:04,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645413148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:04,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:04,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:45:04,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674069596] [2022-11-02 20:45:04,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:04,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:04,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:04,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:04,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:04,933 INFO L87 Difference]: Start difference. First operand 43951 states and 66767 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 20:45:10,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:10,031 INFO L93 Difference]: Finished difference Result 91773 states and 140139 transitions. [2022-11-02 20:45:10,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:10,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 105 [2022-11-02 20:45:10,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:10,155 INFO L225 Difference]: With dead ends: 91773 [2022-11-02 20:45:10,155 INFO L226 Difference]: Without dead ends: 81511 [2022-11-02 20:45:10,173 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 20:45:10,174 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 85 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:10,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 373 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:45:10,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81511 states. [2022-11-02 20:45:15,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81511 to 81394. [2022-11-02 20:45:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81394 states, 81393 states have (on average 1.5231285245659947) internal successors, (123972), 81393 states have internal predecessors, (123972), 0 states have call successors, (0), 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 20:45:15,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81394 states to 81394 states and 123972 transitions. [2022-11-02 20:45:15,530 INFO L78 Accepts]: Start accepts. Automaton has 81394 states and 123972 transitions. Word has length 105 [2022-11-02 20:45:15,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:15,530 INFO L495 AbstractCegarLoop]: Abstraction has 81394 states and 123972 transitions. [2022-11-02 20:45:15,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 20:45:15,530 INFO L276 IsEmpty]: Start isEmpty. Operand 81394 states and 123972 transitions. [2022-11-02 20:45:15,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 20:45:15,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:15,533 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:15,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:45:15,539 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:15,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:15,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1581376920, now seen corresponding path program 1 times [2022-11-02 20:45:15,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:15,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792813693] [2022-11-02 20:45:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:15,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:15,609 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:15,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:15,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792813693] [2022-11-02 20:45:15,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792813693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:15,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:15,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:45:15,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742599442] [2022-11-02 20:45:15,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:15,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:15,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:15,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:15,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:15,612 INFO L87 Difference]: Start difference. First operand 81394 states and 123972 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)