./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/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_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/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_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/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 ff8f3f7dc837fc67a7020fd9a9dd65135ef198f3603f2c180bcb5ad9943191ea --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:34:54,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:34:54,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:34:54,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:34:54,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:34:54,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:34:54,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:34:54,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:34:54,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:34:54,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:34:54,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:34:54,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:34:54,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:34:54,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:34:54,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:34:54,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:34:54,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:34:54,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:34:54,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:34:54,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:34:54,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:34:54,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:34:54,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:34:54,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:34:54,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:34:54,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:34:54,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:34:54,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:34:54,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:34:54,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:34:54,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:34:54,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:34:54,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:34:54,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:34:54,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:34:54,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:34:54,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:34:54,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:34:54,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:34:54,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:34:54,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:34:54,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:34:54,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:34:54,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:34:54,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:34:54,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:34:54,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:34:54,562 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:34:54,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:34:54,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:34:54,563 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:34:54,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:34:54,565 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:34:54,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:34:54,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:34:54,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:34:54,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:34:54,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:34:54,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:34:54,567 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:34:54,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:34:54,567 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:34:54,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:34:54,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:34:54,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:34:54,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:34:54,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:34:54,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:34:54,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:34:54,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:34:54,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:34:54,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:34:54,572 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:34:54,572 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:34:54,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:34:54,573 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_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff8f3f7dc837fc67a7020fd9a9dd65135ef198f3603f2c180bcb5ad9943191ea [2022-11-02 20:34:54,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:34:54,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:34:54,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:34:54,925 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:34:54,926 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:34:54,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-02 20:34:54,998 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/bin/uautomizer-Dbtcem3rbc/data/4a3f0e201/3e3e6dd4dc5f498b8c3b6f55ccc4fecb/FLAGa29c44ba6 [2022-11-02 20:34:55,678 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:34:55,679 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-02 20:34:55,692 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/bin/uautomizer-Dbtcem3rbc/data/4a3f0e201/3e3e6dd4dc5f498b8c3b6f55ccc4fecb/FLAGa29c44ba6 [2022-11-02 20:34:55,937 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/bin/uautomizer-Dbtcem3rbc/data/4a3f0e201/3e3e6dd4dc5f498b8c3b6f55ccc4fecb [2022-11-02 20:34:55,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:34:55,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:34:55,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:34:55,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:34:55,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:34:55,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:34:55" (1/1) ... [2022-11-02 20:34:55,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d9b20e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:55, skipping insertion in model container [2022-11-02 20:34:55,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:34:55" (1/1) ... [2022-11-02 20:34:55,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:34:56,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:34:56,358 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_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2022-11-02 20:34:56,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:34:56,455 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:34:56,534 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_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2022-11-02 20:34:56,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:34:56,614 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:34:56,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:56 WrapperNode [2022-11-02 20:34:56,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:34:56,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:34:56,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:34:56,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:34:56,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:56" (1/1) ... [2022-11-02 20:34:56,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:56" (1/1) ... [2022-11-02 20:34:56,708 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 792 [2022-11-02 20:34:56,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:34:56,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:34:56,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:34:56,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:34:56,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:56" (1/1) ... [2022-11-02 20:34:56,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:56" (1/1) ... [2022-11-02 20:34:56,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:56" (1/1) ... [2022-11-02 20:34:56,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:56" (1/1) ... [2022-11-02 20:34:56,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:56" (1/1) ... [2022-11-02 20:34:56,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:56" (1/1) ... [2022-11-02 20:34:56,751 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:56" (1/1) ... [2022-11-02 20:34:56,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:56" (1/1) ... [2022-11-02 20:34:56,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:34:56,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:34:56,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:34:56,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:34:56,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:56" (1/1) ... [2022-11-02 20:34:56,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:34:56,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:56,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:34:56,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_683e3e3b-80d8-47e4-880d-26acaa9dbdcf/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:34:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:34:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:34:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:34:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:34:57,087 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:34:57,090 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:34:57,974 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:34:57,983 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:34:57,983 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:34:57,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:34:57 BoogieIcfgContainer [2022-11-02 20:34:57,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:34:57,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:34:57,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:34:57,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:34:57,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:34:55" (1/3) ... [2022-11-02 20:34:57,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fd2ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:34:57, skipping insertion in model container [2022-11-02 20:34:57,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:56" (2/3) ... [2022-11-02 20:34:57,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fd2ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:34:57, skipping insertion in model container [2022-11-02 20:34:57,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:34:57" (3/3) ... [2022-11-02 20:34:57,998 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-02 20:34:58,023 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:34:58,023 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:34:58,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:34:58,086 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;@76a81073, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:34:58,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:34:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 213 states have (on average 1.7183098591549295) internal successors, (366), 214 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:58,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:34:58,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:58,104 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 20:34:58,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:58,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:58,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1949123702, now seen corresponding path program 1 times [2022-11-02 20:34:58,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:58,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058312540] [2022-11-02 20:34:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:58,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:58,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:58,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058312540] [2022-11-02 20:34:58,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058312540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:58,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:58,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:34:58,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35551561] [2022-11-02 20:34:58,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:58,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:34:58,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:58,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:34:58,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:34:58,979 INFO L87 Difference]: Start difference. First operand has 215 states, 213 states have (on average 1.7183098591549295) internal successors, (366), 214 states have internal predecessors, (366), 0 states have call successors, (0), 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 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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 20:34:59,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:59,325 INFO L93 Difference]: Finished difference Result 867 states and 1402 transitions. [2022-11-02 20:34:59,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:59,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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 20:34:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:59,356 INFO L225 Difference]: With dead ends: 867 [2022-11-02 20:34:59,356 INFO L226 Difference]: Without dead ends: 747 [2022-11-02 20:34:59,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:34:59,368 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 2370 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2370 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:59,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2370 Valid, 2217 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:59,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-02 20:34:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 328. [2022-11-02 20:34:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.507645259938838) internal successors, (493), 327 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:59,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 493 transitions. [2022-11-02 20:34:59,492 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 493 transitions. Word has length 80 [2022-11-02 20:34:59,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:59,493 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 493 transitions. [2022-11-02 20:34:59,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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 20:34:59,498 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 493 transitions. [2022-11-02 20:34:59,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-02 20:34:59,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:59,501 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 20:34:59,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:34:59,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:59,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:59,503 INFO L85 PathProgramCache]: Analyzing trace with hash 13403552, now seen corresponding path program 1 times [2022-11-02 20:34:59,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:59,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721165282] [2022-11-02 20:34:59,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:59,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:00,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:00,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721165282] [2022-11-02 20:35:00,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721165282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:00,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:00,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:35:00,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201774386] [2022-11-02 20:35:00,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:00,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:35:00,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:00,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:35:00,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:00,048 INFO L87 Difference]: Start difference. First operand 328 states and 493 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 20:35:00,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:00,608 INFO L93 Difference]: Finished difference Result 1424 states and 2210 transitions. [2022-11-02 20:35:00,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:35:00,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 20:35:00,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:00,614 INFO L225 Difference]: With dead ends: 1424 [2022-11-02 20:35:00,614 INFO L226 Difference]: Without dead ends: 1176 [2022-11-02 20:35:00,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:00,618 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 1178 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:00,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 1466 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:35:00,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2022-11-02 20:35:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1168. [2022-11-02 20:35:00,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 1.5475578406169666) internal successors, (1806), 1167 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1806 transitions. [2022-11-02 20:35:00,833 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1806 transitions. Word has length 81 [2022-11-02 20:35:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:00,837 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 1806 transitions. [2022-11-02 20:35:00,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 20:35:00,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1806 transitions. [2022-11-02 20:35:00,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 20:35:00,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:00,850 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 20:35:00,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:35:00,852 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:00,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:00,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2050473049, now seen corresponding path program 1 times [2022-11-02 20:35:00,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:00,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650029777] [2022-11-02 20:35:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:00,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:01,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:01,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650029777] [2022-11-02 20:35:01,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650029777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:01,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:01,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:35:01,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055575407] [2022-11-02 20:35:01,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:01,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:01,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:01,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:01,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:35:01,075 INFO L87 Difference]: Start difference. First operand 1168 states and 1806 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:01,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:01,825 INFO L93 Difference]: Finished difference Result 3105 states and 4859 transitions. [2022-11-02 20:35:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:35:01,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:01,834 INFO L225 Difference]: With dead ends: 3105 [2022-11-02 20:35:01,834 INFO L226 Difference]: Without dead ends: 2018 [2022-11-02 20:35:01,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:01,838 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1164 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:01,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 298 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:35:01,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-11-02 20:35:02,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 2016. [2022-11-02 20:35:02,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 2015 states have (on average 1.5563275434243176) internal successors, (3136), 2015 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:02,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 3136 transitions. [2022-11-02 20:35:02,238 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 3136 transitions. Word has length 82 [2022-11-02 20:35:02,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:02,239 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 3136 transitions. [2022-11-02 20:35:02,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:02,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 3136 transitions. [2022-11-02 20:35:02,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 20:35:02,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:02,241 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 20:35:02,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:35:02,242 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:02,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:02,242 INFO L85 PathProgramCache]: Analyzing trace with hash 269412074, now seen corresponding path program 1 times [2022-11-02 20:35:02,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:02,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754371558] [2022-11-02 20:35:02,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:02,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:02,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:02,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:02,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754371558] [2022-11-02 20:35:02,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754371558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:02,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:02,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:35:02,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799001215] [2022-11-02 20:35:02,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:02,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:02,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:02,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:35:02,398 INFO L87 Difference]: Start difference. First operand 2016 states and 3136 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:03,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:03,414 INFO L93 Difference]: Finished difference Result 5537 states and 8684 transitions. [2022-11-02 20:35:03,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:35:03,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:03,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:03,431 INFO L225 Difference]: With dead ends: 5537 [2022-11-02 20:35:03,431 INFO L226 Difference]: Without dead ends: 3632 [2022-11-02 20:35:03,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:03,435 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1130 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:03,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 298 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:35:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2022-11-02 20:35:04,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3630. [2022-11-02 20:35:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3630 states, 3629 states have (on average 1.5593827500688895) internal successors, (5659), 3629 states have internal predecessors, (5659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 5659 transitions. [2022-11-02 20:35:04,066 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 5659 transitions. Word has length 82 [2022-11-02 20:35:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:04,067 INFO L495 AbstractCegarLoop]: Abstraction has 3630 states and 5659 transitions. [2022-11-02 20:35:04,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:04,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 5659 transitions. [2022-11-02 20:35:04,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 20:35:04,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:04,070 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 20:35:04,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:35:04,070 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:04,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:04,071 INFO L85 PathProgramCache]: Analyzing trace with hash 778028859, now seen corresponding path program 1 times [2022-11-02 20:35:04,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:04,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731479151] [2022-11-02 20:35:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:04,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:04,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:04,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731479151] [2022-11-02 20:35:04,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731479151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:04,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:04,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:35:04,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554239510] [2022-11-02 20:35:04,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:04,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:04,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:04,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:35:04,200 INFO L87 Difference]: Start difference. First operand 3630 states and 5659 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:05,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:05,721 INFO L93 Difference]: Finished difference Result 10317 states and 16188 transitions. [2022-11-02 20:35:05,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:35:05,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:05,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:05,748 INFO L225 Difference]: With dead ends: 10317 [2022-11-02 20:35:05,748 INFO L226 Difference]: Without dead ends: 6832 [2022-11-02 20:35:05,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:05,759 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1114 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:05,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 309 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:35:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2022-11-02 20:35:06,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6830. [2022-11-02 20:35:06,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6830 states, 6829 states have (on average 1.5618685019768634) internal successors, (10666), 6829 states have internal predecessors, (10666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6830 states to 6830 states and 10666 transitions. [2022-11-02 20:35:06,605 INFO L78 Accepts]: Start accepts. Automaton has 6830 states and 10666 transitions. Word has length 82 [2022-11-02 20:35:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:06,606 INFO L495 AbstractCegarLoop]: Abstraction has 6830 states and 10666 transitions. [2022-11-02 20:35:06,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6830 states and 10666 transitions. [2022-11-02 20:35:06,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 20:35:06,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:06,609 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 20:35:06,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:35:06,610 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:06,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:06,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1091254392, now seen corresponding path program 1 times [2022-11-02 20:35:06,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:06,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118259610] [2022-11-02 20:35:06,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:06,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:06,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:06,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118259610] [2022-11-02 20:35:06,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118259610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:06,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:06,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:35:06,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766116897] [2022-11-02 20:35:06,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:06,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:06,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:06,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:06,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:35:06,797 INFO L87 Difference]: Start difference. First operand 6830 states and 10666 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:09,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:09,219 INFO L93 Difference]: Finished difference Result 20144 states and 31540 transitions. [2022-11-02 20:35:09,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:35:09,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:09,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:09,295 INFO L225 Difference]: With dead ends: 20144 [2022-11-02 20:35:09,296 INFO L226 Difference]: Without dead ends: 13372 [2022-11-02 20:35:09,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:09,308 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1178 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:09,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 296 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:35:09,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13372 states. [2022-11-02 20:35:11,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13372 to 13370. [2022-11-02 20:35:11,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13370 states, 13369 states have (on average 1.5566609320068816) internal successors, (20811), 13369 states have internal predecessors, (20811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:11,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13370 states to 13370 states and 20811 transitions. [2022-11-02 20:35:11,621 INFO L78 Accepts]: Start accepts. Automaton has 13370 states and 20811 transitions. Word has length 82 [2022-11-02 20:35:11,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:11,622 INFO L495 AbstractCegarLoop]: Abstraction has 13370 states and 20811 transitions. [2022-11-02 20:35:11,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:11,622 INFO L276 IsEmpty]: Start isEmpty. Operand 13370 states and 20811 transitions. [2022-11-02 20:35:11,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 20:35:11,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:11,626 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 20:35:11,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:35:11,627 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:11,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:11,627 INFO L85 PathProgramCache]: Analyzing trace with hash 980453495, now seen corresponding path program 1 times [2022-11-02 20:35:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:11,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469150490] [2022-11-02 20:35:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:11,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:11,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:11,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469150490] [2022-11-02 20:35:11,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469150490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:11,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:11,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:35:11,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161402718] [2022-11-02 20:35:11,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:11,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:11,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:11,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:11,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:35:11,740 INFO L87 Difference]: Start difference. First operand 13370 states and 20811 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:15,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:15,178 INFO L93 Difference]: Finished difference Result 39777 states and 61996 transitions. [2022-11-02 20:35:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:35:15,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:15,271 INFO L225 Difference]: With dead ends: 39777 [2022-11-02 20:35:15,271 INFO L226 Difference]: Without dead ends: 26449 [2022-11-02 20:35:15,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:15,294 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1202 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:15,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 292 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:35:15,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26449 states. [2022-11-02 20:35:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26449 to 26447. [2022-11-02 20:35:18,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26447 states, 26446 states have (on average 1.5480601981396052) internal successors, (40940), 26446 states have internal predecessors, (40940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26447 states to 26447 states and 40940 transitions. [2022-11-02 20:35:18,706 INFO L78 Accepts]: Start accepts. Automaton has 26447 states and 40940 transitions. Word has length 82 [2022-11-02 20:35:18,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:18,706 INFO L495 AbstractCegarLoop]: Abstraction has 26447 states and 40940 transitions. [2022-11-02 20:35:18,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 20:35:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand 26447 states and 40940 transitions. [2022-11-02 20:35:18,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-02 20:35:18,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:18,714 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 20:35:18,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:35:18,715 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:18,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:18,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1660254060, now seen corresponding path program 1 times [2022-11-02 20:35:18,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:18,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888261885] [2022-11-02 20:35:18,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:18,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:19,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:19,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888261885] [2022-11-02 20:35:19,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888261885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:19,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:19,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:35:19,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633928286] [2022-11-02 20:35:19,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:19,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:19,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:19,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:19,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:35:19,020 INFO L87 Difference]: Start difference. First operand 26447 states and 40940 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 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 20:35:25,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:25,921 INFO L93 Difference]: Finished difference Result 52689 states and 81293 transitions. [2022-11-02 20:35:25,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:35:25,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 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 20:35:25,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:26,062 INFO L225 Difference]: With dead ends: 52689 [2022-11-02 20:35:26,062 INFO L226 Difference]: Without dead ends: 52687 [2022-11-02 20:35:26,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:35:26,077 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 304 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:26,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1237 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:35:26,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52687 states. [2022-11-02 20:35:29,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52687 to 27087. [2022-11-02 20:35:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27087 states, 27086 states have (on average 1.5351103891309164) internal successors, (41580), 27086 states have internal predecessors, (41580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27087 states to 27087 states and 41580 transitions. [2022-11-02 20:35:30,020 INFO L78 Accepts]: Start accepts. Automaton has 27087 states and 41580 transitions. Word has length 83 [2022-11-02 20:35:30,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:30,020 INFO L495 AbstractCegarLoop]: Abstraction has 27087 states and 41580 transitions. [2022-11-02 20:35:30,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 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 20:35:30,021 INFO L276 IsEmpty]: Start isEmpty. Operand 27087 states and 41580 transitions. [2022-11-02 20:35:30,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-02 20:35:30,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:30,029 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 20:35:30,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:35:30,030 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:30,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:30,031 INFO L85 PathProgramCache]: Analyzing trace with hash 207675476, now seen corresponding path program 1 times [2022-11-02 20:35:30,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:30,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780379436] [2022-11-02 20:35:30,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:30,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:30,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:30,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:30,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780379436] [2022-11-02 20:35:30,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780379436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:30,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:30,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:35:30,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730683884] [2022-11-02 20:35:30,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:30,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:35:30,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:30,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:35:30,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:35:30,481 INFO L87 Difference]: Start difference. First operand 27087 states and 41580 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 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 20:35:44,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:44,497 INFO L93 Difference]: Finished difference Result 110286 states and 167959 transitions. [2022-11-02 20:35:44,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:35:44,498 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 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 20:35:44,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:44,735 INFO L225 Difference]: With dead ends: 110286 [2022-11-02 20:35:44,735 INFO L226 Difference]: Without dead ends: 95974 [2022-11-02 20:35:44,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:35:44,777 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 2992 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2992 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:44,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2992 Valid, 1390 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:35:44,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95974 states. [2022-11-02 20:35:49,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95974 to 27380. [2022-11-02 20:35:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27380 states, 27379 states have (on average 1.53340151210782) internal successors, (41983), 27379 states have internal predecessors, (41983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27380 states to 27380 states and 41983 transitions. [2022-11-02 20:35:49,963 INFO L78 Accepts]: Start accepts. Automaton has 27380 states and 41983 transitions. Word has length 84 [2022-11-02 20:35:49,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:49,964 INFO L495 AbstractCegarLoop]: Abstraction has 27380 states and 41983 transitions. [2022-11-02 20:35:49,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 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 20:35:49,964 INFO L276 IsEmpty]: Start isEmpty. Operand 27380 states and 41983 transitions. [2022-11-02 20:35:49,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-02 20:35:49,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:49,973 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 20:35:49,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:35:49,973 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:49,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:49,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1543265332, now seen corresponding path program 1 times [2022-11-02 20:35:49,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:49,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106000863] [2022-11-02 20:35:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:49,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:50,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:50,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106000863] [2022-11-02 20:35:50,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106000863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:50,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:50,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:35:50,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898122487] [2022-11-02 20:35:50,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:50,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:35:50,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:50,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:35:50,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:35:50,498 INFO L87 Difference]: Start difference. First operand 27380 states and 41983 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 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)