./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/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_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/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_34d2f7ba-1a6e-4347-826e-27d400894b7b/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 927c21c2096a228a934a41e2a18844ff0d670b1b365a7d276a4e36116ab9babc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:07:18,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:07:18,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:07:18,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:07:18,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:07:18,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:07:18,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:07:18,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:07:18,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:07:18,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:07:18,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:07:18,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:07:18,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:07:18,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:07:18,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:07:18,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:07:18,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:07:18,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:07:18,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:07:18,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:07:18,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:07:18,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:07:18,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:07:18,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:07:18,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:07:18,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:07:18,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:07:18,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:07:18,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:07:18,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:07:18,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:07:18,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:07:18,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:07:18,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:07:18,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:07:18,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:07:18,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:07:18,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:07:18,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:07:18,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:07:18,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:07:18,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:07:18,467 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:07:18,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:07:18,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:07:18,469 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:07:18,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:07:18,470 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:07:18,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:07:18,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:07:18,471 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:07:18,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:07:18,472 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:07:18,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:07:18,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:07:18,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:07:18,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:07:18,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:07:18,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:07:18,474 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:07:18,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:07:18,475 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:07:18,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:07:18,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:07:18,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:07:18,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:07:18,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:18,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:07:18,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:07:18,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:07:18,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:07:18,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:07:18,478 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:07:18,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:07:18,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:07:18,479 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_34d2f7ba-1a6e-4347-826e-27d400894b7b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 927c21c2096a228a934a41e2a18844ff0d670b1b365a7d276a4e36116ab9babc [2022-11-02 21:07:18,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:07:18,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:07:18,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:07:18,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:07:18,867 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:07:18,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c [2022-11-02 21:07:18,954 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc/data/095962fb5/b2524a32ff80427594a33945a32bd405/FLAGf11eb3c0d [2022-11-02 21:07:19,591 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:07:19,592 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c [2022-11-02 21:07:19,608 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc/data/095962fb5/b2524a32ff80427594a33945a32bd405/FLAGf11eb3c0d [2022-11-02 21:07:19,884 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc/data/095962fb5/b2524a32ff80427594a33945a32bd405 [2022-11-02 21:07:19,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:07:19,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:07:19,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:19,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:07:19,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:07:19,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:19" (1/1) ... [2022-11-02 21:07:19,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7168084f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:19, skipping insertion in model container [2022-11-02 21:07:19,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:19" (1/1) ... [2022-11-02 21:07:19,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:07:19,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:07:20,281 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_34d2f7ba-1a6e-4347-826e-27d400894b7b/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c[9376,9389] [2022-11-02 21:07:20,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:20,311 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:07:20,407 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_34d2f7ba-1a6e-4347-826e-27d400894b7b/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c[9376,9389] [2022-11-02 21:07:20,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:20,433 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:07:20,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:20 WrapperNode [2022-11-02 21:07:20,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:20,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:20,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:07:20,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:07:20,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:20" (1/1) ... [2022-11-02 21:07:20,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:20" (1/1) ... [2022-11-02 21:07:20,522 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 313 [2022-11-02 21:07:20,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:20,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:07:20,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:07:20,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:07:20,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:20" (1/1) ... [2022-11-02 21:07:20,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:20" (1/1) ... [2022-11-02 21:07:20,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:20" (1/1) ... [2022-11-02 21:07:20,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:20" (1/1) ... [2022-11-02 21:07:20,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:20" (1/1) ... [2022-11-02 21:07:20,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:20" (1/1) ... [2022-11-02 21:07:20,599 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:20" (1/1) ... [2022-11-02 21:07:20,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:20" (1/1) ... [2022-11-02 21:07:20,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:07:20,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:07:20,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:07:20,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:07:20,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:20" (1/1) ... [2022-11-02 21:07:20,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:20,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:20,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:20,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:07:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:07:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:07:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:07:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:07:20,801 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:07:20,803 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:07:21,382 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:07:21,390 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:07:21,390 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:07:21,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:21 BoogieIcfgContainer [2022-11-02 21:07:21,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:07:21,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:07:21,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:07:21,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:07:21,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:07:19" (1/3) ... [2022-11-02 21:07:21,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7d0978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:21, skipping insertion in model container [2022-11-02 21:07:21,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:20" (2/3) ... [2022-11-02 21:07:21,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7d0978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:21, skipping insertion in model container [2022-11-02 21:07:21,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:21" (3/3) ... [2022-11-02 21:07:21,421 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c [2022-11-02 21:07:21,443 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:07:21,443 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:07:21,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:07:21,524 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;@67e149b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:07:21,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:07:21,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 97 states have (on average 1.690721649484536) internal successors, (164), 98 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:21,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-02 21:07:21,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:21,555 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] [2022-11-02 21:07:21,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:21,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:21,562 INFO L85 PathProgramCache]: Analyzing trace with hash -107778019, now seen corresponding path program 1 times [2022-11-02 21:07:21,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:21,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181535432] [2022-11-02 21:07:21,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:21,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:21,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:21,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181535432] [2022-11-02 21:07:21,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181535432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:21,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:21,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:07:21,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779656376] [2022-11-02 21:07:21,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:21,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:07:21,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:21,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:07:21,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:07:21,891 INFO L87 Difference]: Start difference. First operand has 99 states, 97 states have (on average 1.690721649484536) internal successors, (164), 98 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:21,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:21,923 INFO L93 Difference]: Finished difference Result 165 states and 271 transitions. [2022-11-02 21:07:21,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:07:21,926 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-02 21:07:21,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:21,938 INFO L225 Difference]: With dead ends: 165 [2022-11-02 21:07:21,938 INFO L226 Difference]: Without dead ends: 95 [2022-11-02 21:07:21,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:07:21,946 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:21,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:21,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-02 21:07:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-02 21:07:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.6702127659574468) internal successors, (157), 94 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 157 transitions. [2022-11-02 21:07:22,003 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 157 transitions. Word has length 29 [2022-11-02 21:07:22,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:22,004 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 157 transitions. [2022-11-02 21:07:22,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,007 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 157 transitions. [2022-11-02 21:07:22,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-02 21:07:22,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:22,012 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] [2022-11-02 21:07:22,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:07:22,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:22,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:22,015 INFO L85 PathProgramCache]: Analyzing trace with hash -241791525, now seen corresponding path program 1 times [2022-11-02 21:07:22,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:22,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606354288] [2022-11-02 21:07:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:22,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:22,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:22,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:22,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606354288] [2022-11-02 21:07:22,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606354288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:22,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:22,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:22,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187767722] [2022-11-02 21:07:22,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:22,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:22,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:22,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:22,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:22,452 INFO L87 Difference]: Start difference. First operand 95 states and 157 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:22,550 INFO L93 Difference]: Finished difference Result 164 states and 264 transitions. [2022-11-02 21:07:22,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:07:22,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-02 21:07:22,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:22,553 INFO L225 Difference]: With dead ends: 164 [2022-11-02 21:07:22,553 INFO L226 Difference]: Without dead ends: 95 [2022-11-02 21:07:22,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:22,555 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 3 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:22,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 593 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-02 21:07:22,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-02 21:07:22,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 94 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 133 transitions. [2022-11-02 21:07:22,566 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 133 transitions. Word has length 29 [2022-11-02 21:07:22,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:22,566 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 133 transitions. [2022-11-02 21:07:22,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,567 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 133 transitions. [2022-11-02 21:07:22,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 21:07:22,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:22,569 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] [2022-11-02 21:07:22,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:07:22,570 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:22,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:22,571 INFO L85 PathProgramCache]: Analyzing trace with hash 747245012, now seen corresponding path program 1 times [2022-11-02 21:07:22,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:22,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197477087] [2022-11-02 21:07:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:22,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:22,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:22,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197477087] [2022-11-02 21:07:22,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197477087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:22,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:22,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:22,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373505143] [2022-11-02 21:07:22,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:22,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:22,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:22,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:22,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:22,724 INFO L87 Difference]: Start difference. First operand 95 states and 133 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:22,775 INFO L93 Difference]: Finished difference Result 213 states and 319 transitions. [2022-11-02 21:07:22,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:22,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-11-02 21:07:22,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:22,783 INFO L225 Difference]: With dead ends: 213 [2022-11-02 21:07:22,784 INFO L226 Difference]: Without dead ends: 148 [2022-11-02 21:07:22,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:22,788 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 87 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:22,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 289 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:22,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-02 21:07:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2022-11-02 21:07:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.4758620689655173) internal successors, (214), 145 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 214 transitions. [2022-11-02 21:07:22,833 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 214 transitions. Word has length 52 [2022-11-02 21:07:22,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:22,834 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 214 transitions. [2022-11-02 21:07:22,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,835 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 214 transitions. [2022-11-02 21:07:22,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-02 21:07:22,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:22,837 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] [2022-11-02 21:07:22,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:07:22,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:22,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:22,838 INFO L85 PathProgramCache]: Analyzing trace with hash 396878357, now seen corresponding path program 1 times [2022-11-02 21:07:22,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:22,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418921916] [2022-11-02 21:07:22,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:22,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:22,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:22,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418921916] [2022-11-02 21:07:22,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418921916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:22,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:22,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:22,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136497453] [2022-11-02 21:07:22,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:22,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:22,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:22,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:22,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:22,958 INFO L87 Difference]: Start difference. First operand 146 states and 214 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:23,012 INFO L93 Difference]: Finished difference Result 354 states and 542 transitions. [2022-11-02 21:07:23,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:23,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-11-02 21:07:23,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:23,017 INFO L225 Difference]: With dead ends: 354 [2022-11-02 21:07:23,017 INFO L226 Difference]: Without dead ends: 238 [2022-11-02 21:07:23,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:23,029 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 82 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:23,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 280 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:23,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-02 21:07:23,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2022-11-02 21:07:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.5106382978723405) internal successors, (355), 235 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 355 transitions. [2022-11-02 21:07:23,078 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 355 transitions. Word has length 53 [2022-11-02 21:07:23,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:23,078 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 355 transitions. [2022-11-02 21:07:23,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,079 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 355 transitions. [2022-11-02 21:07:23,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 21:07:23,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:23,080 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] [2022-11-02 21:07:23,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:07:23,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:23,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash -778312060, now seen corresponding path program 1 times [2022-11-02 21:07:23,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:23,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184577906] [2022-11-02 21:07:23,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:23,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:23,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:23,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184577906] [2022-11-02 21:07:23,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184577906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:23,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:23,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:23,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345726061] [2022-11-02 21:07:23,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:23,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:23,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:23,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:23,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:23,226 INFO L87 Difference]: Start difference. First operand 236 states and 355 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:23,293 INFO L93 Difference]: Finished difference Result 600 states and 925 transitions. [2022-11-02 21:07:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:23,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-11-02 21:07:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:23,298 INFO L225 Difference]: With dead ends: 600 [2022-11-02 21:07:23,299 INFO L226 Difference]: Without dead ends: 394 [2022-11-02 21:07:23,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:23,302 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 77 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:23,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 271 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:23,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-02 21:07:23,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2022-11-02 21:07:23,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.5217391304347827) internal successors, (595), 391 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 595 transitions. [2022-11-02 21:07:23,339 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 595 transitions. Word has length 54 [2022-11-02 21:07:23,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:23,339 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 595 transitions. [2022-11-02 21:07:23,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,340 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 595 transitions. [2022-11-02 21:07:23,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 21:07:23,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:23,341 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] [2022-11-02 21:07:23,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:07:23,342 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1214154885, now seen corresponding path program 1 times [2022-11-02 21:07:23,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:23,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442003618] [2022-11-02 21:07:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:23,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:23,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:23,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442003618] [2022-11-02 21:07:23,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442003618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:23,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:23,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:07:23,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43901052] [2022-11-02 21:07:23,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:23,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:07:23,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:23,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:07:23,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:07:23,489 INFO L87 Difference]: Start difference. First operand 392 states and 595 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:23,721 INFO L93 Difference]: Finished difference Result 2202 states and 3420 transitions. [2022-11-02 21:07:23,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:07:23,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-11-02 21:07:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:23,730 INFO L225 Difference]: With dead ends: 2202 [2022-11-02 21:07:23,730 INFO L226 Difference]: Without dead ends: 1840 [2022-11-02 21:07:23,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:23,732 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 746 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:23,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1037 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:23,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2022-11-02 21:07:23,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 752. [2022-11-02 21:07:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 1.521970705725699) internal successors, (1143), 751 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1143 transitions. [2022-11-02 21:07:23,842 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1143 transitions. Word has length 55 [2022-11-02 21:07:23,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:23,842 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 1143 transitions. [2022-11-02 21:07:23,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,843 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1143 transitions. [2022-11-02 21:07:23,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 21:07:23,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:23,852 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] [2022-11-02 21:07:23,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:07:23,852 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:23,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:23,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1399227554, now seen corresponding path program 1 times [2022-11-02 21:07:23,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:23,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556867643] [2022-11-02 21:07:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:23,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:24,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:24,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556867643] [2022-11-02 21:07:24,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556867643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:24,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:24,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:07:24,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472705201] [2022-11-02 21:07:24,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:24,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:07:24,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:24,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:07:24,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:07:24,164 INFO L87 Difference]: Start difference. First operand 752 states and 1143 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:24,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:24,597 INFO L93 Difference]: Finished difference Result 3376 states and 5139 transitions. [2022-11-02 21:07:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:07:24,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-11-02 21:07:24,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:24,613 INFO L225 Difference]: With dead ends: 3376 [2022-11-02 21:07:24,614 INFO L226 Difference]: Without dead ends: 2654 [2022-11-02 21:07:24,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:07:24,620 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 345 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:24,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 528 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:24,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2022-11-02 21:07:24,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2648. [2022-11-02 21:07:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2648 states, 2647 states have (on average 1.5137891953154514) internal successors, (4007), 2647 states have internal predecessors, (4007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 4007 transitions. [2022-11-02 21:07:24,944 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 4007 transitions. Word has length 56 [2022-11-02 21:07:24,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:24,945 INFO L495 AbstractCegarLoop]: Abstraction has 2648 states and 4007 transitions. [2022-11-02 21:07:24,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:24,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 4007 transitions. [2022-11-02 21:07:24,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-02 21:07:24,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:24,950 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] [2022-11-02 21:07:24,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:07:24,951 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:24,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:24,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1806755418, now seen corresponding path program 1 times [2022-11-02 21:07:24,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:24,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634550481] [2022-11-02 21:07:24,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:24,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:25,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:25,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634550481] [2022-11-02 21:07:25,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634550481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:25,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:25,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:25,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258535738] [2022-11-02 21:07:25,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:25,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:25,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:25,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:25,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:25,256 INFO L87 Difference]: Start difference. First operand 2648 states and 4007 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:25,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:25,978 INFO L93 Difference]: Finished difference Result 5522 states and 8240 transitions. [2022-11-02 21:07:25,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:25,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-11-02 21:07:25,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:26,001 INFO L225 Difference]: With dead ends: 5522 [2022-11-02 21:07:26,001 INFO L226 Difference]: Without dead ends: 5520 [2022-11-02 21:07:26,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:26,004 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 288 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:26,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 592 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5520 states. [2022-11-02 21:07:26,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5520 to 2840. [2022-11-02 21:07:26,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2840 states, 2839 states have (on average 1.4790419161676647) internal successors, (4199), 2839 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 4199 transitions. [2022-11-02 21:07:26,369 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 4199 transitions. Word has length 57 [2022-11-02 21:07:26,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:26,369 INFO L495 AbstractCegarLoop]: Abstraction has 2840 states and 4199 transitions. [2022-11-02 21:07:26,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:26,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 4199 transitions. [2022-11-02 21:07:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 21:07:26,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:26,371 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] [2022-11-02 21:07:26,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:07:26,372 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:26,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:26,373 INFO L85 PathProgramCache]: Analyzing trace with hash 227421697, now seen corresponding path program 1 times [2022-11-02 21:07:26,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:26,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582953145] [2022-11-02 21:07:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:26,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:26,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:26,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582953145] [2022-11-02 21:07:26,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582953145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:26,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:26,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:26,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506944383] [2022-11-02 21:07:26,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:26,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:26,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:26,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:26,443 INFO L87 Difference]: Start difference. First operand 2840 states and 4199 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:27,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:27,047 INFO L93 Difference]: Finished difference Result 7692 states and 11321 transitions. [2022-11-02 21:07:27,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:27,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-02 21:07:27,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:27,068 INFO L225 Difference]: With dead ends: 7692 [2022-11-02 21:07:27,068 INFO L226 Difference]: Without dead ends: 4882 [2022-11-02 21:07:27,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:27,078 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 67 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:27,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 231 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4882 states. [2022-11-02 21:07:27,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4882 to 4824. [2022-11-02 21:07:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4824 states, 4823 states have (on average 1.4478540327596932) internal successors, (6983), 4823 states have internal predecessors, (6983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:27,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 6983 transitions. [2022-11-02 21:07:27,734 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 6983 transitions. Word has length 58 [2022-11-02 21:07:27,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:27,735 INFO L495 AbstractCegarLoop]: Abstraction has 4824 states and 6983 transitions. [2022-11-02 21:07:27,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:27,735 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 6983 transitions. [2022-11-02 21:07:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-02 21:07:27,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:27,737 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] [2022-11-02 21:07:27,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:07:27,737 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:27,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:27,739 INFO L85 PathProgramCache]: Analyzing trace with hash -2122531684, now seen corresponding path program 1 times [2022-11-02 21:07:27,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:27,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670864229] [2022-11-02 21:07:27,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:27,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:27,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:27,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670864229] [2022-11-02 21:07:27,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670864229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:27,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:27,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:27,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708613252] [2022-11-02 21:07:27,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:27,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:27,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:27,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:27,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:27,817 INFO L87 Difference]: Start difference. First operand 4824 states and 6983 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:28,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:28,615 INFO L93 Difference]: Finished difference Result 9743 states and 14173 transitions. [2022-11-02 21:07:28,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:28,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-11-02 21:07:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:28,645 INFO L225 Difference]: With dead ends: 9743 [2022-11-02 21:07:28,645 INFO L226 Difference]: Without dead ends: 6932 [2022-11-02 21:07:28,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:28,651 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 88 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:28,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 310 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:28,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6932 states. [2022-11-02 21:07:29,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6932 to 6930. [2022-11-02 21:07:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6930 states, 6929 states have (on average 1.4341174772694472) internal successors, (9937), 6929 states have internal predecessors, (9937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:29,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6930 states to 6930 states and 9937 transitions. [2022-11-02 21:07:29,665 INFO L78 Accepts]: Start accepts. Automaton has 6930 states and 9937 transitions. Word has length 59 [2022-11-02 21:07:29,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:29,666 INFO L495 AbstractCegarLoop]: Abstraction has 6930 states and 9937 transitions. [2022-11-02 21:07:29,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:29,666 INFO L276 IsEmpty]: Start isEmpty. Operand 6930 states and 9937 transitions. [2022-11-02 21:07:29,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 21:07:29,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:29,672 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:29,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:07:29,672 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:29,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:29,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1504297558, now seen corresponding path program 1 times [2022-11-02 21:07:29,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:29,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571128289] [2022-11-02 21:07:29,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:29,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:29,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:29,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571128289] [2022-11-02 21:07:29,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571128289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:29,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:29,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:29,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439002459] [2022-11-02 21:07:29,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:29,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:29,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:29,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:29,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:29,745 INFO L87 Difference]: Start difference. First operand 6930 states and 9937 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:30,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:30,704 INFO L93 Difference]: Finished difference Result 16593 states and 23741 transitions. [2022-11-02 21:07:30,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:30,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-02 21:07:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:30,753 INFO L225 Difference]: With dead ends: 16593 [2022-11-02 21:07:30,753 INFO L226 Difference]: Without dead ends: 11119 [2022-11-02 21:07:30,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:30,759 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 66 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:30,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 263 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:30,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11119 states. [2022-11-02 21:07:32,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11119 to 10545. [2022-11-02 21:07:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10545 states, 10544 states have (on average 1.4164453717754173) internal successors, (14935), 10544 states have internal predecessors, (14935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:32,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10545 states to 10545 states and 14935 transitions. [2022-11-02 21:07:32,221 INFO L78 Accepts]: Start accepts. Automaton has 10545 states and 14935 transitions. Word has length 82 [2022-11-02 21:07:32,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:32,223 INFO L495 AbstractCegarLoop]: Abstraction has 10545 states and 14935 transitions. [2022-11-02 21:07:32,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:32,225 INFO L276 IsEmpty]: Start isEmpty. Operand 10545 states and 14935 transitions. [2022-11-02 21:07:32,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 21:07:32,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:32,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:32,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:07:32,241 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:32,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:32,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1310211642, now seen corresponding path program 1 times [2022-11-02 21:07:32,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:32,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836541674] [2022-11-02 21:07:32,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:32,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:32,435 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:07:32,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:32,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836541674] [2022-11-02 21:07:32,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836541674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:32,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:32,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:07:32,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977878819] [2022-11-02 21:07:32,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:32,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:07:32,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:32,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:07:32,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:07:32,439 INFO L87 Difference]: Start difference. First operand 10545 states and 14935 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:33,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:33,921 INFO L93 Difference]: Finished difference Result 22607 states and 32332 transitions. [2022-11-02 21:07:33,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:07:33,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-02 21:07:33,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:33,967 INFO L225 Difference]: With dead ends: 22607 [2022-11-02 21:07:33,967 INFO L226 Difference]: Without dead ends: 18981 [2022-11-02 21:07:33,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:33,976 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 635 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:33,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 742 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18981 states. [2022-11-02 21:07:35,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18981 to 14073. [2022-11-02 21:07:35,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14073 states, 14072 states have (on average 1.415505969300739) internal successors, (19919), 14072 states have internal predecessors, (19919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14073 states to 14073 states and 19919 transitions. [2022-11-02 21:07:35,463 INFO L78 Accepts]: Start accepts. Automaton has 14073 states and 19919 transitions. Word has length 82 [2022-11-02 21:07:35,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:35,464 INFO L495 AbstractCegarLoop]: Abstraction has 14073 states and 19919 transitions. [2022-11-02 21:07:35,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 14073 states and 19919 transitions. [2022-11-02 21:07:35,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 21:07:35,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:35,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:35,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:07:35,474 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:35,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:35,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1737557706, now seen corresponding path program 1 times [2022-11-02 21:07:35,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:35,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212004168] [2022-11-02 21:07:35,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:35,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:35,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:35,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212004168] [2022-11-02 21:07:35,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212004168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:35,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:35,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:35,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128963147] [2022-11-02 21:07:35,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:35,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:35,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:35,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:35,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:35,552 INFO L87 Difference]: Start difference. First operand 14073 states and 19919 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:37,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:37,068 INFO L93 Difference]: Finished difference Result 22641 states and 31918 transitions. [2022-11-02 21:07:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:37,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-02 21:07:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:37,104 INFO L225 Difference]: With dead ends: 22641 [2022-11-02 21:07:37,104 INFO L226 Difference]: Without dead ends: 14865 [2022-11-02 21:07:37,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:37,115 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 69 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:37,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 292 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:37,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14865 states. [2022-11-02 21:07:38,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14865 to 14161. [2022-11-02 21:07:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14161 states, 14160 states have (on average 1.3921610169491525) internal successors, (19713), 14160 states have internal predecessors, (19713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14161 states to 14161 states and 19713 transitions. [2022-11-02 21:07:38,357 INFO L78 Accepts]: Start accepts. Automaton has 14161 states and 19713 transitions. Word has length 82 [2022-11-02 21:07:38,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:38,357 INFO L495 AbstractCegarLoop]: Abstraction has 14161 states and 19713 transitions. [2022-11-02 21:07:38,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:38,358 INFO L276 IsEmpty]: Start isEmpty. Operand 14161 states and 19713 transitions. [2022-11-02 21:07:38,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 21:07:38,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:38,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:38,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:07:38,366 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:38,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:38,367 INFO L85 PathProgramCache]: Analyzing trace with hash 54798832, now seen corresponding path program 1 times [2022-11-02 21:07:38,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:38,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716196298] [2022-11-02 21:07:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:38,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 21:07:38,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:38,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716196298] [2022-11-02 21:07:38,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716196298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:38,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:38,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:07:38,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397917591] [2022-11-02 21:07:38,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:38,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:07:38,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:38,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:07:38,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:07:38,508 INFO L87 Difference]: Start difference. First operand 14161 states and 19713 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:39,960 INFO L93 Difference]: Finished difference Result 22780 states and 32064 transitions. [2022-11-02 21:07:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:07:39,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-02 21:07:39,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:40,015 INFO L225 Difference]: With dead ends: 22780 [2022-11-02 21:07:40,015 INFO L226 Difference]: Without dead ends: 20918 [2022-11-02 21:07:40,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:40,024 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 627 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:40,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 763 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:40,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20918 states. [2022-11-02 21:07:41,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20918 to 15973. [2022-11-02 21:07:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15973 states, 15972 states have (on average 1.3940020035061358) internal successors, (22265), 15972 states have internal predecessors, (22265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15973 states to 15973 states and 22265 transitions. [2022-11-02 21:07:41,812 INFO L78 Accepts]: Start accepts. Automaton has 15973 states and 22265 transitions. Word has length 82 [2022-11-02 21:07:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:41,813 INFO L495 AbstractCegarLoop]: Abstraction has 15973 states and 22265 transitions. [2022-11-02 21:07:41,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:41,813 INFO L276 IsEmpty]: Start isEmpty. Operand 15973 states and 22265 transitions. [2022-11-02 21:07:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 21:07:41,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:41,824 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:41,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:07:41,825 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:41,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:41,826 INFO L85 PathProgramCache]: Analyzing trace with hash -273458928, now seen corresponding path program 1 times [2022-11-02 21:07:41,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:41,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098242969] [2022-11-02 21:07:41,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:41,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:07:42,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:42,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098242969] [2022-11-02 21:07:42,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098242969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:42,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:42,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:07:42,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008712573] [2022-11-02 21:07:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:42,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:07:42,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:07:42,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:07:42,005 INFO L87 Difference]: Start difference. First operand 15973 states and 22265 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:44,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:44,229 INFO L93 Difference]: Finished difference Result 28973 states and 40771 transitions. [2022-11-02 21:07:44,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:07:44,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-02 21:07:44,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:44,268 INFO L225 Difference]: With dead ends: 28973 [2022-11-02 21:07:44,268 INFO L226 Difference]: Without dead ends: 24433 [2022-11-02 21:07:44,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:44,281 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 589 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:44,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 845 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:44,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24433 states. [2022-11-02 21:07:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24433 to 20069. [2022-11-02 21:07:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20069 states, 20068 states have (on average 1.393711381303568) internal successors, (27969), 20068 states have internal predecessors, (27969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:46,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20069 states to 20069 states and 27969 transitions. [2022-11-02 21:07:46,587 INFO L78 Accepts]: Start accepts. Automaton has 20069 states and 27969 transitions. Word has length 82 [2022-11-02 21:07:46,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:46,587 INFO L495 AbstractCegarLoop]: Abstraction has 20069 states and 27969 transitions. [2022-11-02 21:07:46,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:46,587 INFO L276 IsEmpty]: Start isEmpty. Operand 20069 states and 27969 transitions. [2022-11-02 21:07:46,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-02 21:07:46,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:46,597 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:46,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:07:46,598 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:46,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:46,598 INFO L85 PathProgramCache]: Analyzing trace with hash -90302852, now seen corresponding path program 1 times [2022-11-02 21:07:46,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:46,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204265948] [2022-11-02 21:07:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:46,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:47,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:47,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204265948] [2022-11-02 21:07:47,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204265948] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:07:47,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306370830] [2022-11-02 21:07:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:47,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:07:47,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:47,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:07:47,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34d2f7ba-1a6e-4347-826e-27d400894b7b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:07:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:47,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:07:47,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:07:47,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:07:48,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306370830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:48,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:07:48,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 14 [2022-11-02 21:07:48,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103020118] [2022-11-02 21:07:48,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:48,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:07:48,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:48,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:07:48,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:07:48,033 INFO L87 Difference]: Start difference. First operand 20069 states and 27969 transitions. Second operand has 14 states, 14 states have (on average 16.785714285714285) internal successors, (235), 14 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:15,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:15,318 INFO L93 Difference]: Finished difference Result 248164 states and 344247 transitions. [2022-11-02 21:08:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-11-02 21:08:15,318 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.785714285714285) internal successors, (235), 14 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-02 21:08:15,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:15,829 INFO L225 Difference]: With dead ends: 248164 [2022-11-02 21:08:15,829 INFO L226 Difference]: Without dead ends: 228820 [2022-11-02 21:08:15,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3782 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1857, Invalid=7455, Unknown=0, NotChecked=0, Total=9312 [2022-11-02 21:08:15,894 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 6684 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6684 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 2219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:15,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6684 Valid, 2641 Invalid, 2219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:08:16,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228820 states.