./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label59.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_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/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_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/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_df5cea84-8afb-489a-bf88-91f45a19e375/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 fe2b0deb169362c7d64c9df76766c9af54619e5f9a01cab4bf1bef7672f8f279 --- 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 20:58:53,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:58:53,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:58:53,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:58:53,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:58:53,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:58:53,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:58:53,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:58:53,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:58:53,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:58:53,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:58:53,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:58:53,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:58:53,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:58:53,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:58:53,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:58:53,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:58:53,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:58:53,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:58:53,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:58:53,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:58:53,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:58:53,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:58:53,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:58:53,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:58:53,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:58:53,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:58:53,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:58:53,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:58:53,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:58:53,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:58:53,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:58:53,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:58:53,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:58:53,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:58:53,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:58:53,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:58:53,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:58:53,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:58:53,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:58:53,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:58:53,525 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:58:53,561 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:58:53,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:58:53,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:58:53,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:58:53,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:58:53,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:58:53,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:58:53,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:58:53,565 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:58:53,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:58:53,566 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:58:53,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:58:53,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:58:53,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:58:53,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:58:53,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:58:53,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:58:53,567 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:58:53,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:58:53,568 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:58:53,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:58:53,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:58:53,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:58:53,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:58:53,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:58:53,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:58:53,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:58:53,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:58:53,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:58:53,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:58:53,571 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:58:53,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:58:53,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:58:53,572 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_df5cea84-8afb-489a-bf88-91f45a19e375/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe2b0deb169362c7d64c9df76766c9af54619e5f9a01cab4bf1bef7672f8f279 [2022-11-02 20:58:53,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:58:53,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:58:53,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:58:53,877 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:58:53,878 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:58:53,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/eca-rers2012/Problem19_label59.c [2022-11-02 20:58:53,969 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/data/bc82d6375/dade4054b8854c1c88f0540c4bd984e2/FLAG610544104 [2022-11-02 20:58:54,884 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:58:54,886 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/sv-benchmarks/c/eca-rers2012/Problem19_label59.c [2022-11-02 20:58:54,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/data/bc82d6375/dade4054b8854c1c88f0540c4bd984e2/FLAG610544104 [2022-11-02 20:58:55,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/data/bc82d6375/dade4054b8854c1c88f0540c4bd984e2 [2022-11-02 20:58:55,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:58:55,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:58:55,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:58:55,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:58:55,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:58:55,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:58:55" (1/1) ... [2022-11-02 20:58:55,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ea5bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:55, skipping insertion in model container [2022-11-02 20:58:55,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:58:55" (1/1) ... [2022-11-02 20:58:55,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:58:55,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:58:55,952 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_df5cea84-8afb-489a-bf88-91f45a19e375/sv-benchmarks/c/eca-rers2012/Problem19_label59.c[3603,3616] [2022-11-02 20:58:57,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:58:57,748 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:58:57,769 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_df5cea84-8afb-489a-bf88-91f45a19e375/sv-benchmarks/c/eca-rers2012/Problem19_label59.c[3603,3616] [2022-11-02 20:58:58,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:58:58,951 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:58:58,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:58 WrapperNode [2022-11-02 20:58:58,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:58:58,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:58:58,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:58:58,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:58:58,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:58" (1/1) ... [2022-11-02 20:58:59,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:58" (1/1) ... [2022-11-02 20:58:59,868 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-11-02 20:58:59,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:58:59,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:58:59,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:58:59,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:58:59,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:58" (1/1) ... [2022-11-02 20:58:59,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:58" (1/1) ... [2022-11-02 20:59:00,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:58" (1/1) ... [2022-11-02 20:59:00,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:58" (1/1) ... [2022-11-02 20:59:00,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:58" (1/1) ... [2022-11-02 20:59:00,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:58" (1/1) ... [2022-11-02 20:59:00,913 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:58" (1/1) ... [2022-11-02 20:59:00,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:58" (1/1) ... [2022-11-02 20:59:01,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:59:01,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:59:01,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:59:01,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:59:01,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:58" (1/1) ... [2022-11-02 20:59:01,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:01,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:01,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:59:01,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:59:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:59:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:59:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:59:01,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:59:01,383 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:59:01,386 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:59:11,676 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:59:11,693 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:59:11,694 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:59:11,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:11 BoogieIcfgContainer [2022-11-02 20:59:11,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:59:11,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:59:11,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:59:11,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:59:11,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:58:55" (1/3) ... [2022-11-02 20:59:11,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a15266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:11, skipping insertion in model container [2022-11-02 20:59:11,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:58" (2/3) ... [2022-11-02 20:59:11,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a15266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:11, skipping insertion in model container [2022-11-02 20:59:11,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:11" (3/3) ... [2022-11-02 20:59:11,707 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label59.c [2022-11-02 20:59:11,726 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:59:11,726 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:59:11,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:11,834 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;@34794fb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:11,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:59:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 20:59:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:59:11,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:11,860 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] [2022-11-02 20:59:11,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:11,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:11,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1225036359, now seen corresponding path program 1 times [2022-11-02 20:59:11,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:11,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12501170] [2022-11-02 20:59:11,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:11,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:12,243 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 20:59:12,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:12,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12501170] [2022-11-02 20:59:12,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12501170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:12,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:12,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:59:12,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959925938] [2022-11-02 20:59:12,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:12,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:12,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:12,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:12,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:12,301 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 20:59:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:22,654 INFO L93 Difference]: Finished difference Result 4975 states and 9416 transitions. [2022-11-02 20:59:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:22,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-11-02 20:59:22,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:22,685 INFO L225 Difference]: With dead ends: 4975 [2022-11-02 20:59:22,686 INFO L226 Difference]: Without dead ends: 3163 [2022-11-02 20:59:22,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:22,698 INFO L413 NwaCegarLoop]: 1353 mSDtfsCounter, 1521 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4670 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 5793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 4670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:22,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1524 Invalid, 5793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1123 Valid, 4670 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-02 20:59:22,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2022-11-02 20:59:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3123. [2022-11-02 20:59:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.6268417680973735) internal successors, (5079), 3122 states have internal predecessors, (5079), 0 states have call successors, (0), 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 20:59:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 5079 transitions. [2022-11-02 20:59:22,870 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 5079 transitions. Word has length 25 [2022-11-02 20:59:22,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:22,871 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 5079 transitions. [2022-11-02 20:59:22,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 20:59:22,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 5079 transitions. [2022-11-02 20:59:22,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-02 20:59:22,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:22,874 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:22,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:59:22,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:22,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:22,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1658791217, now seen corresponding path program 1 times [2022-11-02 20:59:22,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:22,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446847548] [2022-11-02 20:59:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:22,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:23,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:23,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446847548] [2022-11-02 20:59:23,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446847548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:23,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:23,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:59:23,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887759511] [2022-11-02 20:59:23,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:23,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:23,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:23,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:23,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:23,111 INFO L87 Difference]: Start difference. First operand 3123 states and 5079 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 20:59:32,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:32,620 INFO L93 Difference]: Finished difference Result 9055 states and 14814 transitions. [2022-11-02 20:59:32,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:32,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-11-02 20:59:32,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:32,647 INFO L225 Difference]: With dead ends: 9055 [2022-11-02 20:59:32,647 INFO L226 Difference]: Without dead ends: 5934 [2022-11-02 20:59:32,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:32,655 INFO L413 NwaCegarLoop]: 1324 mSDtfsCounter, 1536 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4266 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 5738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:32,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1543 Invalid, 5738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4266 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-02 20:59:32,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2022-11-02 20:59:32,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5910. [2022-11-02 20:59:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5910 states, 5909 states have (on average 1.4235911321712642) internal successors, (8412), 5909 states have internal predecessors, (8412), 0 states have call successors, (0), 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 20:59:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5910 states to 5910 states and 8412 transitions. [2022-11-02 20:59:32,882 INFO L78 Accepts]: Start accepts. Automaton has 5910 states and 8412 transitions. Word has length 96 [2022-11-02 20:59:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:32,885 INFO L495 AbstractCegarLoop]: Abstraction has 5910 states and 8412 transitions. [2022-11-02 20:59:32,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 20:59:32,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5910 states and 8412 transitions. [2022-11-02 20:59:32,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-02 20:59:32,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:32,894 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:32,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:59:32,898 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:32,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:32,908 INFO L85 PathProgramCache]: Analyzing trace with hash -698240399, now seen corresponding path program 1 times [2022-11-02 20:59:32,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:32,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112809145] [2022-11-02 20:59:32,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:32,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:33,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:33,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112809145] [2022-11-02 20:59:33,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112809145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:33,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:33,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:59:33,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995906980] [2022-11-02 20:59:33,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:33,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:33,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:33,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:33,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:59:33,407 INFO L87 Difference]: Start difference. First operand 5910 states and 8412 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 20:59:46,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:46,155 INFO L93 Difference]: Finished difference Result 18680 states and 26154 transitions. [2022-11-02 20:59:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:59:46,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-11-02 20:59:46,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:46,204 INFO L225 Difference]: With dead ends: 18680 [2022-11-02 20:59:46,204 INFO L226 Difference]: Without dead ends: 12772 [2022-11-02 20:59:46,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:46,215 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 4365 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 7341 mSolverCounterSat, 2202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 9543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2202 IncrementalHoareTripleChecker+Valid, 7341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:46,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4365 Valid, 1281 Invalid, 9543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2202 Valid, 7341 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2022-11-02 20:59:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12772 states. [2022-11-02 20:59:46,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12772 to 12761. [2022-11-02 20:59:46,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12761 states, 12760 states have (on average 1.3468652037617554) internal successors, (17186), 12760 states have internal predecessors, (17186), 0 states have call successors, (0), 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 20:59:46,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12761 states to 12761 states and 17186 transitions. [2022-11-02 20:59:46,475 INFO L78 Accepts]: Start accepts. Automaton has 12761 states and 17186 transitions. Word has length 108 [2022-11-02 20:59:46,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:46,475 INFO L495 AbstractCegarLoop]: Abstraction has 12761 states and 17186 transitions. [2022-11-02 20:59:46,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 20:59:46,476 INFO L276 IsEmpty]: Start isEmpty. Operand 12761 states and 17186 transitions. [2022-11-02 20:59:46,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-02 20:59:46,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:46,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:46,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:59:46,482 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:46,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash -519306661, now seen corresponding path program 1 times [2022-11-02 20:59:46,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:46,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949304358] [2022-11-02 20:59:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:46,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:46,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:46,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949304358] [2022-11-02 20:59:46,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949304358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:46,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:46,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:59:46,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866588909] [2022-11-02 20:59:46,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:46,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:46,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:46,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:46,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:46,876 INFO L87 Difference]: Start difference. First operand 12761 states and 17186 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 20:59:54,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:54,628 INFO L93 Difference]: Finished difference Result 29634 states and 40392 transitions. [2022-11-02 20:59:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:54,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2022-11-02 20:59:54,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:54,702 INFO L225 Difference]: With dead ends: 29634 [2022-11-02 20:59:54,703 INFO L226 Difference]: Without dead ends: 18241 [2022-11-02 20:59:54,718 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 20:59:54,729 INFO L413 NwaCegarLoop]: 3079 mSDtfsCounter, 1466 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 3739 mSolverCounterSat, 1676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 5415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1676 IncrementalHoareTripleChecker+Valid, 3739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:54,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 3270 Invalid, 5415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1676 Valid, 3739 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-02 20:59:54,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18241 states. [2022-11-02 20:59:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18241 to 18237. [2022-11-02 20:59:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18237 states, 18236 states have (on average 1.2679315639394604) internal successors, (23122), 18236 states have internal predecessors, (23122), 0 states have call successors, (0), 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 20:59:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18237 states to 18237 states and 23122 transitions. [2022-11-02 20:59:55,104 INFO L78 Accepts]: Start accepts. Automaton has 18237 states and 23122 transitions. Word has length 232 [2022-11-02 20:59:55,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:55,105 INFO L495 AbstractCegarLoop]: Abstraction has 18237 states and 23122 transitions. [2022-11-02 20:59:55,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 20:59:55,106 INFO L276 IsEmpty]: Start isEmpty. Operand 18237 states and 23122 transitions. [2022-11-02 20:59:55,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-11-02 20:59:55,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:55,114 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:55,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:59:55,115 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:55,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:55,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1757817294, now seen corresponding path program 1 times [2022-11-02 20:59:55,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:55,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650780787] [2022-11-02 20:59:55,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:55,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:59:56,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:56,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650780787] [2022-11-02 20:59:56,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650780787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:56,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:56,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:59:56,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682227085] [2022-11-02 20:59:56,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:56,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:56,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:56,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:56,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:59:56,872 INFO L87 Difference]: Start difference. First operand 18237 states and 23122 transitions. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 21:00:09,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:09,349 INFO L93 Difference]: Finished difference Result 44706 states and 55895 transitions. [2022-11-02 21:00:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:00:09,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 354 [2022-11-02 21:00:09,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:09,409 INFO L225 Difference]: With dead ends: 44706 [2022-11-02 21:00:09,409 INFO L226 Difference]: Without dead ends: 27836 [2022-11-02 21:00:09,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:09,430 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 3755 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 9336 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 9762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 9336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:09,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 2094 Invalid, 9762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 9336 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-11-02 21:00:09,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27836 states. [2022-11-02 21:00:09,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27836 to 27813. [2022-11-02 21:00:09,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27813 states, 27812 states have (on average 1.201891269955415) internal successors, (33427), 27812 states have internal predecessors, (33427), 0 states have call successors, (0), 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 21:00:09,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27813 states to 27813 states and 33427 transitions. [2022-11-02 21:00:09,844 INFO L78 Accepts]: Start accepts. Automaton has 27813 states and 33427 transitions. Word has length 354 [2022-11-02 21:00:09,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:09,845 INFO L495 AbstractCegarLoop]: Abstraction has 27813 states and 33427 transitions. [2022-11-02 21:00:09,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 21:00:09,850 INFO L276 IsEmpty]: Start isEmpty. Operand 27813 states and 33427 transitions. [2022-11-02 21:00:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-11-02 21:00:09,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:09,857 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:09,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:00:09,858 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:09,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:09,859 INFO L85 PathProgramCache]: Analyzing trace with hash -278228072, now seen corresponding path program 1 times [2022-11-02 21:00:09,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:09,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123568380] [2022-11-02 21:00:09,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:09,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:10,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:10,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123568380] [2022-11-02 21:00:10,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123568380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:10,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:10,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:10,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621277702] [2022-11-02 21:00:10,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:10,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:10,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:10,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:10,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:10,680 INFO L87 Difference]: Start difference. First operand 27813 states and 33427 transitions. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 21:00:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:20,310 INFO L93 Difference]: Finished difference Result 52925 states and 64135 transitions. [2022-11-02 21:00:20,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:00:20,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 382 [2022-11-02 21:00:20,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:20,359 INFO L225 Difference]: With dead ends: 52925 [2022-11-02 21:00:20,359 INFO L226 Difference]: Without dead ends: 27813 [2022-11-02 21:00:20,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:20,379 INFO L413 NwaCegarLoop]: 1769 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7313 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 7321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:20,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2111 Invalid, 7321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7313 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-02 21:00:20,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27813 states. [2022-11-02 21:00:20,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27813 to 27813. [2022-11-02 21:00:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27813 states, 27812 states have (on average 1.2014238458219473) internal successors, (33414), 27812 states have internal predecessors, (33414), 0 states have call successors, (0), 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 21:00:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27813 states to 27813 states and 33414 transitions. [2022-11-02 21:00:20,737 INFO L78 Accepts]: Start accepts. Automaton has 27813 states and 33414 transitions. Word has length 382 [2022-11-02 21:00:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:20,738 INFO L495 AbstractCegarLoop]: Abstraction has 27813 states and 33414 transitions. [2022-11-02 21:00:20,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 21:00:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 27813 states and 33414 transitions. [2022-11-02 21:00:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2022-11-02 21:00:20,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:20,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:20,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:00:20,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash 325902696, now seen corresponding path program 1 times [2022-11-02 21:00:20,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:20,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130804773] [2022-11-02 21:00:20,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:20,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:21,429 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:21,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:21,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130804773] [2022-11-02 21:00:21,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130804773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:21,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:21,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:21,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354089954] [2022-11-02 21:00:21,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:21,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:21,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:21,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:21,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:21,432 INFO L87 Difference]: Start difference. First operand 27813 states and 33414 transitions. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 21:00:30,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:30,078 INFO L93 Difference]: Finished difference Result 61182 states and 76059 transitions. [2022-11-02 21:00:30,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:30,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 512 [2022-11-02 21:00:30,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:30,145 INFO L225 Difference]: With dead ends: 61182 [2022-11-02 21:00:30,145 INFO L226 Difference]: Without dead ends: 36101 [2022-11-02 21:00:30,163 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 21:00:30,164 INFO L413 NwaCegarLoop]: 1925 mSDtfsCounter, 1695 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5049 mSolverCounterSat, 954 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 6003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 954 IncrementalHoareTripleChecker+Valid, 5049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:30,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 2074 Invalid, 6003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [954 Valid, 5049 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-02 21:00:30,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36101 states. [2022-11-02 21:00:30,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36101 to 36082. [2022-11-02 21:00:30,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36082 states, 36081 states have (on average 1.2354424766497603) internal successors, (44576), 36081 states have internal predecessors, (44576), 0 states have call successors, (0), 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 21:00:30,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36082 states to 36082 states and 44576 transitions. [2022-11-02 21:00:30,597 INFO L78 Accepts]: Start accepts. Automaton has 36082 states and 44576 transitions. Word has length 512 [2022-11-02 21:00:30,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:30,598 INFO L495 AbstractCegarLoop]: Abstraction has 36082 states and 44576 transitions. [2022-11-02 21:00:30,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 21:00:30,598 INFO L276 IsEmpty]: Start isEmpty. Operand 36082 states and 44576 transitions. [2022-11-02 21:00:30,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2022-11-02 21:00:30,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:30,614 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:30,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:00:30,614 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:30,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:30,615 INFO L85 PathProgramCache]: Analyzing trace with hash 942540356, now seen corresponding path program 1 times [2022-11-02 21:00:30,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:30,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089182594] [2022-11-02 21:00:30,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:30,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-02 21:00:31,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:31,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089182594] [2022-11-02 21:00:31,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089182594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:31,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:31,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:31,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109737735] [2022-11-02 21:00:31,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:31,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:31,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:31,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:31,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:31,355 INFO L87 Difference]: Start difference. First operand 36082 states and 44576 transitions. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 0 states have call successors, (0), 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 21:00:39,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:39,727 INFO L93 Difference]: Finished difference Result 77634 states and 97709 transitions. [2022-11-02 21:00:39,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:39,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 0 states have call successors, (0), 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 590 [2022-11-02 21:00:39,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:39,786 INFO L225 Difference]: With dead ends: 77634 [2022-11-02 21:00:39,787 INFO L226 Difference]: Without dead ends: 44284 [2022-11-02 21:00:39,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:39,805 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 1380 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 2094 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 6020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2094 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:39,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 795 Invalid, 6020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2094 Valid, 3926 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-02 21:00:39,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44284 states. [2022-11-02 21:00:40,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44284 to 44272. [2022-11-02 21:00:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44272 states, 44271 states have (on average 1.2296988999570826) internal successors, (54440), 44271 states have internal predecessors, (54440), 0 states have call successors, (0), 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 21:00:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44272 states to 44272 states and 54440 transitions. [2022-11-02 21:00:40,291 INFO L78 Accepts]: Start accepts. Automaton has 44272 states and 54440 transitions. Word has length 590 [2022-11-02 21:00:40,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:40,291 INFO L495 AbstractCegarLoop]: Abstraction has 44272 states and 54440 transitions. [2022-11-02 21:00:40,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 0 states have call successors, (0), 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 21:00:40,292 INFO L276 IsEmpty]: Start isEmpty. Operand 44272 states and 54440 transitions. [2022-11-02 21:00:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2022-11-02 21:00:40,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:40,298 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:40,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:00:40,299 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:40,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:40,300 INFO L85 PathProgramCache]: Analyzing trace with hash 192399333, now seen corresponding path program 1 times [2022-11-02 21:00:40,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:40,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749206704] [2022-11-02 21:00:40,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:40,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-02 21:00:41,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:41,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749206704] [2022-11-02 21:00:41,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749206704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:41,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:41,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:41,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203319881] [2022-11-02 21:00:41,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:41,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:41,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:41,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:41,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:41,060 INFO L87 Difference]: Start difference. First operand 44272 states and 54440 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 2 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:00:50,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:50,715 INFO L93 Difference]: Finished difference Result 127006 states and 157393 transitions. [2022-11-02 21:00:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:50,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 2 states have internal predecessors, (516), 0 states have call successors, (0), 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 631 [2022-11-02 21:00:50,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:50,819 INFO L225 Difference]: With dead ends: 127006 [2022-11-02 21:00:50,819 INFO L226 Difference]: Without dead ends: 85466 [2022-11-02 21:00:50,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:50,848 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 2109 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 5107 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2109 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 5541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:50,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2109 Valid, 974 Invalid, 5541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5107 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-02 21:00:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85466 states. [2022-11-02 21:00:51,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85466 to 85462. [2022-11-02 21:00:51,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85462 states, 85461 states have (on average 1.2110904389136565) internal successors, (103501), 85461 states have internal predecessors, (103501), 0 states have call successors, (0), 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 21:00:52,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85462 states to 85462 states and 103501 transitions. [2022-11-02 21:00:52,137 INFO L78 Accepts]: Start accepts. Automaton has 85462 states and 103501 transitions. Word has length 631 [2022-11-02 21:00:52,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:52,138 INFO L495 AbstractCegarLoop]: Abstraction has 85462 states and 103501 transitions. [2022-11-02 21:00:52,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 2 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:00:52,139 INFO L276 IsEmpty]: Start isEmpty. Operand 85462 states and 103501 transitions. [2022-11-02 21:00:52,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2022-11-02 21:00:52,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:52,145 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:52,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:00:52,146 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:52,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:52,146 INFO L85 PathProgramCache]: Analyzing trace with hash 207909631, now seen corresponding path program 1 times [2022-11-02 21:00:52,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:52,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609322560] [2022-11-02 21:00:52,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:52,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 45 proven. 40 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-02 21:00:54,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:54,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609322560] [2022-11-02 21:00:54,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609322560] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:54,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040564319] [2022-11-02 21:00:54,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:54,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:54,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:54,098 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:54,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:00:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:54,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:00:54,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:54,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:54,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040564319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:54,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:00:54,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-02 21:00:54,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440842283] [2022-11-02 21:00:54,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:54,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:54,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:54,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:54,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:54,692 INFO L87 Difference]: Start difference. First operand 85462 states and 103501 transitions. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 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 21:01:03,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:03,673 INFO L93 Difference]: Finished difference Result 233691 states and 286262 transitions. [2022-11-02 21:01:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:01:03,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 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 634 [2022-11-02 21:01:03,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:03,812 INFO L225 Difference]: With dead ends: 233691 [2022-11-02 21:01:03,812 INFO L226 Difference]: Without dead ends: 148229 [2022-11-02 21:01:04,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:04,081 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1526 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 3901 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 5629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:04,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1688 Invalid, 5629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3901 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-02 21:01:04,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148229 states. [2022-11-02 21:01:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148229 to 140035. [2022-11-02 21:01:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140035 states, 140034 states have (on average 1.1517702843595128) internal successors, (161287), 140034 states have internal predecessors, (161287), 0 states have call successors, (0), 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 21:01:06,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140035 states to 140035 states and 161287 transitions. [2022-11-02 21:01:06,137 INFO L78 Accepts]: Start accepts. Automaton has 140035 states and 161287 transitions. Word has length 634 [2022-11-02 21:01:06,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:06,138 INFO L495 AbstractCegarLoop]: Abstraction has 140035 states and 161287 transitions. [2022-11-02 21:01:06,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 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 21:01:06,138 INFO L276 IsEmpty]: Start isEmpty. Operand 140035 states and 161287 transitions. [2022-11-02 21:01:06,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2022-11-02 21:01:06,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:06,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:06,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 21:01:06,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 21:01:06,345 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:06,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:06,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2001287119, now seen corresponding path program 1 times [2022-11-02 21:01:06,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:06,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439648798] [2022-11-02 21:01:06,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:06,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-11-02 21:01:07,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:07,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439648798] [2022-11-02 21:01:07,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439648798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:07,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:07,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:01:07,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744152459] [2022-11-02 21:01:07,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:07,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:01:07,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:07,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:01:07,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:01:07,256 INFO L87 Difference]: Start difference. First operand 140035 states and 161287 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:01:16,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:16,301 INFO L93 Difference]: Finished difference Result 277350 states and 319859 transitions. [2022-11-02 21:01:16,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:01:16,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 724 [2022-11-02 21:01:16,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:16,436 INFO L225 Difference]: With dead ends: 277350 [2022-11-02 21:01:16,436 INFO L226 Difference]: Without dead ends: 140047 [2022-11-02 21:01:16,478 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 21:01:16,478 INFO L413 NwaCegarLoop]: 2856 mSDtfsCounter, 1421 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 4413 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 5298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 4413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:16,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 3041 Invalid, 5298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 4413 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-02 21:01:16,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140047 states. [2022-11-02 21:01:18,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140047 to 140033. [2022-11-02 21:01:18,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140033 states, 140032 states have (on average 1.1178801988117002) internal successors, (156539), 140032 states have internal predecessors, (156539), 0 states have call successors, (0), 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 21:01:18,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140033 states to 140033 states and 156539 transitions. [2022-11-02 21:01:18,434 INFO L78 Accepts]: Start accepts. Automaton has 140033 states and 156539 transitions. Word has length 724 [2022-11-02 21:01:18,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:18,435 INFO L495 AbstractCegarLoop]: Abstraction has 140033 states and 156539 transitions. [2022-11-02 21:01:18,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:01:18,436 INFO L276 IsEmpty]: Start isEmpty. Operand 140033 states and 156539 transitions. [2022-11-02 21:01:18,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2022-11-02 21:01:18,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:18,444 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:18,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:01:18,445 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:18,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:18,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1259584170, now seen corresponding path program 1 times [2022-11-02 21:01:18,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:18,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499264868] [2022-11-02 21:01:18,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:18,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 45 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:21,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:21,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499264868] [2022-11-02 21:01:21,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499264868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:01:21,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512346041] [2022-11-02 21:01:21,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:21,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:21,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:21,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:21,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:01:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:21,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:01:22,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-02 21:01:22,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:22,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512346041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:22,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:01:22,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-02 21:01:22,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48416754] [2022-11-02 21:01:22,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:22,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:01:22,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:22,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:01:22,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:22,088 INFO L87 Difference]: Start difference. First operand 140033 states and 156539 transitions. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 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 21:01:30,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:30,425 INFO L93 Difference]: Finished difference Result 316922 states and 355599 transitions. [2022-11-02 21:01:30,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:01:30,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 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 731 [2022-11-02 21:01:30,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:30,595 INFO L225 Difference]: With dead ends: 316922 [2022-11-02 21:01:30,595 INFO L226 Difference]: Without dead ends: 174156 [2022-11-02 21:01:30,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:30,635 INFO L413 NwaCegarLoop]: 2486 mSDtfsCounter, 1688 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 3772 mSolverCounterSat, 1691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 5463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1691 IncrementalHoareTripleChecker+Valid, 3772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:30,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 2577 Invalid, 5463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1691 Valid, 3772 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-02 21:01:30,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174156 states. [2022-11-02 21:01:32,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174156 to 167317. [2022-11-02 21:01:32,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167317 states, 167316 states have (on average 1.1028771904659447) internal successors, (184529), 167316 states have internal predecessors, (184529), 0 states have call successors, (0), 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 21:01:33,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167317 states to 167317 states and 184529 transitions. [2022-11-02 21:01:33,208 INFO L78 Accepts]: Start accepts. Automaton has 167317 states and 184529 transitions. Word has length 731 [2022-11-02 21:01:33,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:33,209 INFO L495 AbstractCegarLoop]: Abstraction has 167317 states and 184529 transitions. [2022-11-02 21:01:33,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 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 21:01:33,209 INFO L276 IsEmpty]: Start isEmpty. Operand 167317 states and 184529 transitions. [2022-11-02 21:01:33,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2022-11-02 21:01:33,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:33,223 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:33,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:33,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5cea84-8afb-489a-bf88-91f45a19e375/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:33,439 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:33,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:33,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2103569992, now seen corresponding path program 1 times [2022-11-02 21:01:33,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:33,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594362252] [2022-11-02 21:01:33,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:33,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-02 21:01:35,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:35,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594362252] [2022-11-02 21:01:35,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594362252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:35,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:35,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:35,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242338993] [2022-11-02 21:01:35,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:35,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:01:35,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:35,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:01:35,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:35,248 INFO L87 Difference]: Start difference. First operand 167317 states and 184529 transitions. Second operand has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 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 21:01:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:49,111 INFO L93 Difference]: Finished difference Result 403168 states and 449137 transitions. [2022-11-02 21:01:49,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:01:49,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 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 897 [2022-11-02 21:01:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:49,393 INFO L225 Difference]: With dead ends: 403168 [2022-11-02 21:01:49,393 INFO L226 Difference]: Without dead ends: 237216 [2022-11-02 21:01:49,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:49,456 INFO L413 NwaCegarLoop]: 2988 mSDtfsCounter, 2876 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 8008 mSolverCounterSat, 1298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2876 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 9306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1298 IncrementalHoareTripleChecker+Valid, 8008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:49,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2876 Valid, 3317 Invalid, 9306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1298 Valid, 8008 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-11-02 21:01:49,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237216 states. [2022-11-02 21:01:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237216 to 236946. [2022-11-02 21:01:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236946 states, 236945 states have (on average 1.0891810335731922) internal successors, (258076), 236945 states have internal predecessors, (258076), 0 states have call successors, (0), 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 21:01:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236946 states to 236946 states and 258076 transitions. [2022-11-02 21:01:52,325 INFO L78 Accepts]: Start accepts. Automaton has 236946 states and 258076 transitions. Word has length 897 [2022-11-02 21:01:52,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:52,326 INFO L495 AbstractCegarLoop]: Abstraction has 236946 states and 258076 transitions. [2022-11-02 21:01:52,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 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 21:01:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 236946 states and 258076 transitions. [2022-11-02 21:01:52,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2022-11-02 21:01:52,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:52,339 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:52,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:01:52,340 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:52,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:52,341 INFO L85 PathProgramCache]: Analyzing trace with hash 869003777, now seen corresponding path program 1 times [2022-11-02 21:01:52,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:52,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052115914] [2022-11-02 21:01:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:52,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-11-02 21:01:53,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:53,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052115914] [2022-11-02 21:01:53,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052115914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:53,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:53,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:53,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258752852] [2022-11-02 21:01:53,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:53,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:53,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:53,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:53,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:53,673 INFO L87 Difference]: Start difference. First operand 236946 states and 258076 transitions. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 21:02:11,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:11,745 INFO L93 Difference]: Finished difference Result 714336 states and 783605 transitions. [2022-11-02 21:02:11,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:11,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 931 [2022-11-02 21:02:11,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:12,355 INFO L225 Difference]: With dead ends: 714336 [2022-11-02 21:02:12,355 INFO L226 Difference]: Without dead ends: 480122 [2022-11-02 21:02:12,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:12,466 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 3332 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 8622 mSolverCounterSat, 2850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3332 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 11472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2850 IncrementalHoareTripleChecker+Valid, 8622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:12,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3332 Valid, 1176 Invalid, 11472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2850 Valid, 8622 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2022-11-02 21:02:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480122 states.