./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/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_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/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_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/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 c82e02bad63eada28ee405f8cd74dfaf9484d0aadaa27f27fe076fa722fdcdb7 --- 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 21:10:10,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:10:10,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:10:10,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:10:10,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:10:10,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:10:10,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:10:10,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:10:10,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:10:10,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:10:10,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:10:10,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:10:10,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:10:10,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:10:10,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:10:10,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:10:10,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:10:10,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:10:10,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:10:10,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:10:10,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:10:10,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:10:10,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:10:10,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:10:10,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:10:10,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:10:10,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:10:10,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:10:10,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:10:10,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:10:10,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:10:10,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:10:10,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:10:10,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:10:10,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:10:10,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:10:10,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:10:10,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:10:10,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:10:10,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:10:10,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:10:10,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:10:10,540 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:10:10,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:10:10,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:10:10,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:10:10,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:10:10,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:10:10,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:10:10,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:10:10,555 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:10:10,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:10:10,555 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:10:10,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:10:10,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:10:10,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:10:10,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:10:10,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:10:10,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:10:10,557 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:10:10,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:10:10,557 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:10:10,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:10:10,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:10:10,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:10:10,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:10:10,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:10,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:10:10,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:10:10,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:10:10,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:10:10,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:10:10,559 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:10:10,559 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:10:10,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:10:10,559 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_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c82e02bad63eada28ee405f8cd74dfaf9484d0aadaa27f27fe076fa722fdcdb7 [2022-11-02 21:10:10,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:10:11,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:10:11,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:10:11,027 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:10:11,028 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:10:11,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c [2022-11-02 21:10:11,119 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/bin/uautomizer-Dbtcem3rbc/data/a9d42f84d/b8abae0c444a4da295da431a4175a4b9/FLAG27a577193 [2022-11-02 21:10:11,693 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:10:11,694 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c [2022-11-02 21:10:11,707 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/bin/uautomizer-Dbtcem3rbc/data/a9d42f84d/b8abae0c444a4da295da431a4175a4b9/FLAG27a577193 [2022-11-02 21:10:11,982 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/bin/uautomizer-Dbtcem3rbc/data/a9d42f84d/b8abae0c444a4da295da431a4175a4b9 [2022-11-02 21:10:11,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:10:11,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:10:11,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:11,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:10:11,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:10:11,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:11" (1/1) ... [2022-11-02 21:10:11,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7957cdcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:11, skipping insertion in model container [2022-11-02 21:10:11,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:11" (1/1) ... [2022-11-02 21:10:12,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:10:12,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:10:12,389 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_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c[16852,16865] [2022-11-02 21:10:12,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:12,418 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:10:12,527 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_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c[16852,16865] [2022-11-02 21:10:12,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:12,553 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:10:12,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:12 WrapperNode [2022-11-02 21:10:12,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:12,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:12,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:10:12,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:10:12,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:12" (1/1) ... [2022-11-02 21:10:12,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:12" (1/1) ... [2022-11-02 21:10:12,644 INFO L138 Inliner]: procedures = 26, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 453 [2022-11-02 21:10:12,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:12,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:10:12,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:10:12,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:10:12,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:12" (1/1) ... [2022-11-02 21:10:12,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:12" (1/1) ... [2022-11-02 21:10:12,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:12" (1/1) ... [2022-11-02 21:10:12,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:12" (1/1) ... [2022-11-02 21:10:12,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:12" (1/1) ... [2022-11-02 21:10:12,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:12" (1/1) ... [2022-11-02 21:10:12,711 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:12" (1/1) ... [2022-11-02 21:10:12,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:12" (1/1) ... [2022-11-02 21:10:12,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:10:12,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:10:12,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:10:12,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:10:12,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:12" (1/1) ... [2022-11-02 21:10:12,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:12,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:12,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:10:12,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e69a7b-a05b-4f43-8327-dbd70cfbbb4a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:10:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:10:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:10:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:10:12,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:10:12,992 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:10:12,994 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:10:13,650 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:10:13,662 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:10:13,662 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:10:13,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:13 BoogieIcfgContainer [2022-11-02 21:10:13,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:10:13,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:10:13,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:10:13,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:10:13,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:10:11" (1/3) ... [2022-11-02 21:10:13,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2747e597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:13, skipping insertion in model container [2022-11-02 21:10:13,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:12" (2/3) ... [2022-11-02 21:10:13,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2747e597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:13, skipping insertion in model container [2022-11-02 21:10:13,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:13" (3/3) ... [2022-11-02 21:10:13,680 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c [2022-11-02 21:10:13,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:10:13,704 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:10:13,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:10:13,784 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;@5df21be6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:10:13,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:10:13,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 142 states have (on average 1.7183098591549295) internal successors, (244), 143 states have internal predecessors, (244), 0 states have call successors, (0), 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 21:10:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 21:10:13,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:13,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:13,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:13,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:13,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1333844149, now seen corresponding path program 1 times [2022-11-02 21:10:13,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:13,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743584591] [2022-11-02 21:10:13,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:13,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:14,420 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 21:10:14,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:14,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743584591] [2022-11-02 21:10:14,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743584591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:14,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:14,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:10:14,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685029510] [2022-11-02 21:10:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:14,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:14,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:14,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:14,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:14,476 INFO L87 Difference]: Start difference. First operand has 144 states, 142 states have (on average 1.7183098591549295) internal successors, (244), 143 states have internal predecessors, (244), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:14,665 INFO L93 Difference]: Finished difference Result 241 states and 401 transitions. [2022-11-02 21:10:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:10:14,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-02 21:10:14,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:14,687 INFO L225 Difference]: With dead ends: 241 [2022-11-02 21:10:14,687 INFO L226 Difference]: Without dead ends: 140 [2022-11-02 21:10:14,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:14,702 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 3 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:14,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 896 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:14,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-02 21:10:14,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-11-02 21:10:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.410071942446043) internal successors, (196), 139 states have internal predecessors, (196), 0 states have call successors, (0), 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 21:10:14,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 196 transitions. [2022-11-02 21:10:14,780 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 196 transitions. Word has length 37 [2022-11-02 21:10:14,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:14,780 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 196 transitions. [2022-11-02 21:10:14,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 196 transitions. [2022-11-02 21:10:14,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 21:10:14,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:14,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:14,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:10:14,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:14,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:14,789 INFO L85 PathProgramCache]: Analyzing trace with hash -976812523, now seen corresponding path program 1 times [2022-11-02 21:10:14,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:14,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485587722] [2022-11-02 21:10:14,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:14,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:15,077 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 21:10:15,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:15,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485587722] [2022-11-02 21:10:15,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485587722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:15,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:15,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:15,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002352948] [2022-11-02 21:10:15,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:15,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:15,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:15,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:15,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:15,081 INFO L87 Difference]: Start difference. First operand 140 states and 196 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:15,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:15,126 INFO L93 Difference]: Finished difference Result 314 states and 474 transitions. [2022-11-02 21:10:15,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:15,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-02 21:10:15,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:15,129 INFO L225 Difference]: With dead ends: 314 [2022-11-02 21:10:15,129 INFO L226 Difference]: Without dead ends: 221 [2022-11-02 21:10:15,130 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 21:10:15,131 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 133 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:15,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 444 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:15,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-02 21:10:15,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2022-11-02 21:10:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.481651376146789) internal successors, (323), 218 states have internal predecessors, (323), 0 states have call successors, (0), 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 21:10:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 323 transitions. [2022-11-02 21:10:15,153 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 323 transitions. Word has length 77 [2022-11-02 21:10:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:15,153 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 323 transitions. [2022-11-02 21:10:15,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:15,154 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 323 transitions. [2022-11-02 21:10:15,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-02 21:10:15,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:15,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:15,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:10:15,157 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:15,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:15,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1251497554, now seen corresponding path program 1 times [2022-11-02 21:10:15,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:15,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247680583] [2022-11-02 21:10:15,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:15,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:15,311 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 21:10:15,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:15,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247680583] [2022-11-02 21:10:15,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247680583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:15,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:15,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:15,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673765315] [2022-11-02 21:10:15,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:15,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:15,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:15,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:15,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:15,318 INFO L87 Difference]: Start difference. First operand 219 states and 323 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:15,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:15,376 INFO L93 Difference]: Finished difference Result 539 states and 835 transitions. [2022-11-02 21:10:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:15,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-02 21:10:15,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:15,389 INFO L225 Difference]: With dead ends: 539 [2022-11-02 21:10:15,390 INFO L226 Difference]: Without dead ends: 367 [2022-11-02 21:10:15,396 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 21:10:15,398 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 128 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:15,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 435 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:15,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-11-02 21:10:15,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2022-11-02 21:10:15,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.5274725274725274) internal successors, (556), 364 states have internal predecessors, (556), 0 states have call successors, (0), 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 21:10:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 556 transitions. [2022-11-02 21:10:15,461 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 556 transitions. Word has length 78 [2022-11-02 21:10:15,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:15,462 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 556 transitions. [2022-11-02 21:10:15,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 556 transitions. [2022-11-02 21:10:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 21:10:15,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:15,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:15,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:10:15,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:15,467 INFO L85 PathProgramCache]: Analyzing trace with hash 2103523781, now seen corresponding path program 1 times [2022-11-02 21:10:15,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:15,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537294718] [2022-11-02 21:10:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:15,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:15,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:15,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537294718] [2022-11-02 21:10:15,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537294718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:15,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:15,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:15,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111351528] [2022-11-02 21:10:15,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:15,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:15,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:15,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:15,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:15,649 INFO L87 Difference]: Start difference. First operand 365 states and 556 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 21:10:15,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:15,713 INFO L93 Difference]: Finished difference Result 953 states and 1494 transitions. [2022-11-02 21:10:15,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:15,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-11-02 21:10:15,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:15,717 INFO L225 Difference]: With dead ends: 953 [2022-11-02 21:10:15,717 INFO L226 Difference]: Without dead ends: 635 [2022-11-02 21:10:15,718 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 21:10:15,720 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 123 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:15,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 426 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:15,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-11-02 21:10:15,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 633. [2022-11-02 21:10:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 632 states have (on average 1.5506329113924051) internal successors, (980), 632 states have internal predecessors, (980), 0 states have call successors, (0), 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 21:10:15,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 980 transitions. [2022-11-02 21:10:15,762 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 980 transitions. Word has length 79 [2022-11-02 21:10:15,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:15,764 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 980 transitions. [2022-11-02 21:10:15,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 21:10:15,765 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 980 transitions. [2022-11-02 21:10:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:10:15,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:15,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:15,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:10:15,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:15,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:15,772 INFO L85 PathProgramCache]: Analyzing trace with hash -508152546, now seen corresponding path program 1 times [2022-11-02 21:10:15,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:15,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741888736] [2022-11-02 21:10:15,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:15,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:15,863 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 21:10:15,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:15,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741888736] [2022-11-02 21:10:15,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741888736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:15,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:15,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:15,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689185715] [2022-11-02 21:10:15,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:15,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:15,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:15,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:15,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:15,866 INFO L87 Difference]: Start difference. First operand 633 states and 980 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 21:10:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:15,919 INFO L93 Difference]: Finished difference Result 1709 states and 2686 transitions. [2022-11-02 21:10:15,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:15,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:10:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:15,927 INFO L225 Difference]: With dead ends: 1709 [2022-11-02 21:10:15,928 INFO L226 Difference]: Without dead ends: 1123 [2022-11-02 21:10:15,929 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 21:10:15,936 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 118 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:15,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 417 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:15,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-11-02 21:10:15,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1121. [2022-11-02 21:10:15,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1120 states have (on average 1.5571428571428572) internal successors, (1744), 1120 states have internal predecessors, (1744), 0 states have call successors, (0), 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 21:10:15,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1744 transitions. [2022-11-02 21:10:15,995 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1744 transitions. Word has length 80 [2022-11-02 21:10:15,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:15,997 INFO L495 AbstractCegarLoop]: Abstraction has 1121 states and 1744 transitions. [2022-11-02 21:10:15,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 21:10:16,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1744 transitions. [2022-11-02 21:10:16,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-02 21:10:16,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:16,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:16,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:10:16,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:16,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1230501237, now seen corresponding path program 1 times [2022-11-02 21:10:16,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:16,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507272689] [2022-11-02 21:10:16,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:16,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:16,123 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 21:10:16,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:16,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507272689] [2022-11-02 21:10:16,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507272689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:16,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:16,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:16,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031281725] [2022-11-02 21:10:16,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:16,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:16,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:16,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:16,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:16,127 INFO L87 Difference]: Start difference. First operand 1121 states and 1744 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 21:10:16,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:16,245 INFO L93 Difference]: Finished difference Result 3077 states and 4818 transitions. [2022-11-02 21:10:16,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:16,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-02 21:10:16,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:16,254 INFO L225 Difference]: With dead ends: 3077 [2022-11-02 21:10:16,254 INFO L226 Difference]: Without dead ends: 2003 [2022-11-02 21:10:16,256 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 21:10:16,265 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 113 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:16,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 408 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2022-11-02 21:10:16,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 2001. [2022-11-02 21:10:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 2000 states have (on average 1.552) internal successors, (3104), 2000 states have internal predecessors, (3104), 0 states have call successors, (0), 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 21:10:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 3104 transitions. [2022-11-02 21:10:16,386 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 3104 transitions. Word has length 81 [2022-11-02 21:10:16,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:16,388 INFO L495 AbstractCegarLoop]: Abstraction has 2001 states and 3104 transitions. [2022-11-02 21:10:16,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 21:10:16,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 3104 transitions. [2022-11-02 21:10:16,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 21:10:16,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:16,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:16,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:10:16,403 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:16,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:16,404 INFO L85 PathProgramCache]: Analyzing trace with hash -937142130, now seen corresponding path program 1 times [2022-11-02 21:10:16,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:16,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733005850] [2022-11-02 21:10:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:16,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:16,666 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 21:10:16,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:16,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733005850] [2022-11-02 21:10:16,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733005850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:16,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:16,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:10:16,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115725074] [2022-11-02 21:10:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:16,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:10:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:10:16,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:16,670 INFO L87 Difference]: Start difference. First operand 2001 states and 3104 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 21:10:17,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:17,889 INFO L93 Difference]: Finished difference Result 15679 states and 24503 transitions. [2022-11-02 21:10:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:10:17,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-11-02 21:10:17,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:17,947 INFO L225 Difference]: With dead ends: 15679 [2022-11-02 21:10:17,947 INFO L226 Difference]: Without dead ends: 13725 [2022-11-02 21:10:17,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:10:17,954 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1747 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:17,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 2936 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:10:17,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13725 states. [2022-11-02 21:10:18,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13725 to 3953. [2022-11-02 21:10:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3952 states have (on average 1.54251012145749) internal successors, (6096), 3952 states have internal predecessors, (6096), 0 states have call successors, (0), 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 21:10:18,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 6096 transitions. [2022-11-02 21:10:18,525 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 6096 transitions. Word has length 82 [2022-11-02 21:10:18,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:18,525 INFO L495 AbstractCegarLoop]: Abstraction has 3953 states and 6096 transitions. [2022-11-02 21:10:18,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 21:10:18,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 6096 transitions. [2022-11-02 21:10:18,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-02 21:10:18,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:18,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:18,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:10:18,529 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:18,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:18,529 INFO L85 PathProgramCache]: Analyzing trace with hash 630041935, now seen corresponding path program 1 times [2022-11-02 21:10:18,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:18,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119481459] [2022-11-02 21:10:18,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:18,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:18,923 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 21:10:18,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:18,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119481459] [2022-11-02 21:10:18,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119481459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:18,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:18,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:10:18,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273243912] [2022-11-02 21:10:18,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:18,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:10:18,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:18,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:10:18,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:18,926 INFO L87 Difference]: Start difference. First operand 3953 states and 6096 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 21:10:21,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:21,579 INFO L93 Difference]: Finished difference Result 24989 states and 38230 transitions. [2022-11-02 21:10:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:10:21,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-11-02 21:10:21,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:21,662 INFO L225 Difference]: With dead ends: 24989 [2022-11-02 21:10:21,663 INFO L226 Difference]: Without dead ends: 21083 [2022-11-02 21:10:21,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:21,672 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 881 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:21,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1156 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:10:21,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21083 states. [2022-11-02 21:10:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21083 to 21073. [2022-11-02 21:10:24,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21073 states, 21072 states have (on average 1.5239179954441913) internal successors, (32112), 21072 states have internal predecessors, (32112), 0 states have call successors, (0), 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 21:10:24,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21073 states to 21073 states and 32112 transitions. [2022-11-02 21:10:24,180 INFO L78 Accepts]: Start accepts. Automaton has 21073 states and 32112 transitions. Word has length 83 [2022-11-02 21:10:24,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:24,181 INFO L495 AbstractCegarLoop]: Abstraction has 21073 states and 32112 transitions. [2022-11-02 21:10:24,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 21:10:24,181 INFO L276 IsEmpty]: Start isEmpty. Operand 21073 states and 32112 transitions. [2022-11-02 21:10:24,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-02 21:10:24,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:24,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:24,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:10:24,185 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:24,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:24,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1487130877, now seen corresponding path program 1 times [2022-11-02 21:10:24,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:24,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260742090] [2022-11-02 21:10:24,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:24,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:24,513 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 21:10:24,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:24,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260742090] [2022-11-02 21:10:24,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260742090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:24,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:24,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:10:24,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147062865] [2022-11-02 21:10:24,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:24,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:24,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:24,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:24,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:24,517 INFO L87 Difference]: Start difference. First operand 21073 states and 32112 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 21:10:28,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:28,143 INFO L93 Difference]: Finished difference Result 43635 states and 65713 transitions. [2022-11-02 21:10:28,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:28,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-11-02 21:10:28,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:28,236 INFO L225 Difference]: With dead ends: 43635 [2022-11-02 21:10:28,237 INFO L226 Difference]: Without dead ends: 43633 [2022-11-02 21:10:28,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:28,246 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 426 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:28,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 870 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43633 states. [2022-11-02 21:10:30,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43633 to 22225. [2022-11-02 21:10:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22225 states, 22224 states have (on average 1.4967602591792657) internal successors, (33264), 22224 states have internal predecessors, (33264), 0 states have call successors, (0), 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 21:10:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22225 states to 22225 states and 33264 transitions. [2022-11-02 21:10:30,366 INFO L78 Accepts]: Start accepts. Automaton has 22225 states and 33264 transitions. Word has length 84 [2022-11-02 21:10:30,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:30,366 INFO L495 AbstractCegarLoop]: Abstraction has 22225 states and 33264 transitions. [2022-11-02 21:10:30,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 21:10:30,367 INFO L276 IsEmpty]: Start isEmpty. Operand 22225 states and 33264 transitions. [2022-11-02 21:10:30,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-02 21:10:30,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:30,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:30,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:10:30,369 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:30,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:30,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1091004264, now seen corresponding path program 1 times [2022-11-02 21:10:30,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:30,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229781376] [2022-11-02 21:10:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:30,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:30,459 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 21:10:30,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:30,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229781376] [2022-11-02 21:10:30,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229781376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:30,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:30,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:30,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878367105] [2022-11-02 21:10:30,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:30,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:30,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:30,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:30,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:30,462 INFO L87 Difference]: Start difference. First operand 22225 states and 33264 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 21:10:34,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:34,224 INFO L93 Difference]: Finished difference Result 62165 states and 92658 transitions. [2022-11-02 21:10:34,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:34,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-11-02 21:10:34,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:34,307 INFO L225 Difference]: With dead ends: 62165 [2022-11-02 21:10:34,308 INFO L226 Difference]: Without dead ends: 39987 [2022-11-02 21:10:34,327 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 21:10:34,328 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 103 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:34,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 340 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:34,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39987 states. [2022-11-02 21:10:37,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39987 to 39633. [2022-11-02 21:10:37,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39633 states, 39632 states have (on average 1.4731530076705692) internal successors, (58384), 39632 states have internal predecessors, (58384), 0 states have call successors, (0), 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 21:10:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39633 states to 39633 states and 58384 transitions. [2022-11-02 21:10:38,060 INFO L78 Accepts]: Start accepts. Automaton has 39633 states and 58384 transitions. Word has length 85 [2022-11-02 21:10:38,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:38,061 INFO L495 AbstractCegarLoop]: Abstraction has 39633 states and 58384 transitions. [2022-11-02 21:10:38,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 21:10:38,062 INFO L276 IsEmpty]: Start isEmpty. Operand 39633 states and 58384 transitions. [2022-11-02 21:10:38,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 21:10:38,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:38,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:38,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:10:38,064 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:38,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:38,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1624392677, now seen corresponding path program 1 times [2022-11-02 21:10:38,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:38,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78463624] [2022-11-02 21:10:38,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:38,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:38,143 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 21:10:38,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:38,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78463624] [2022-11-02 21:10:38,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78463624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:38,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:38,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:38,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630148850] [2022-11-02 21:10:38,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:38,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:38,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:38,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:38,146 INFO L87 Difference]: Start difference. First operand 39633 states and 58384 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 21:10:42,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:42,744 INFO L93 Difference]: Finished difference Result 79768 states and 117910 transitions. [2022-11-02 21:10:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:42,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-11-02 21:10:42,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:42,862 INFO L225 Difference]: With dead ends: 79768 [2022-11-02 21:10:42,862 INFO L226 Difference]: Without dead ends: 57589 [2022-11-02 21:10:42,888 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 21:10:42,889 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 134 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:42,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 465 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:42,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57589 states. [2022-11-02 21:10:48,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57589 to 57587. [2022-11-02 21:10:48,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57587 states, 57586 states have (on average 1.4640016670718576) internal successors, (84306), 57586 states have internal predecessors, (84306), 0 states have call successors, (0), 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 21:10:48,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57587 states to 57587 states and 84306 transitions. [2022-11-02 21:10:48,195 INFO L78 Accepts]: Start accepts. Automaton has 57587 states and 84306 transitions. Word has length 86 [2022-11-02 21:10:48,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:48,196 INFO L495 AbstractCegarLoop]: Abstraction has 57587 states and 84306 transitions. [2022-11-02 21:10:48,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 21:10:48,196 INFO L276 IsEmpty]: Start isEmpty. Operand 57587 states and 84306 transitions. [2022-11-02 21:10:48,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-02 21:10:48,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:48,234 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:10:48,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:10:48,235 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:48,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:48,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2050835095, now seen corresponding path program 1 times [2022-11-02 21:10:48,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:48,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631974451] [2022-11-02 21:10:48,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:48,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:10:48,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:48,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631974451] [2022-11-02 21:10:48,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631974451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:48,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:48,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:10:48,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064009553] [2022-11-02 21:10:48,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:48,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:10:48,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:48,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:10:48,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:48,485 INFO L87 Difference]: Start difference. First operand 57587 states and 84306 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)