./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R --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 453217a894ab839ac749d51e6f81154421ad61236b47a16877fbef21d8ae30a8 --- 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-38b53e6 [2022-11-25 17:13:18,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:13:18,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:13:18,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:13:18,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:13:18,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:13:18,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:13:18,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:13:18,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:13:18,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:13:18,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:13:18,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:13:18,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:13:18,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:13:18,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:13:18,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:13:18,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:13:18,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:13:18,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:13:18,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:13:18,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:13:18,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:13:18,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:13:18,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:13:18,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:13:18,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:13:18,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:13:18,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:13:18,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:13:18,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:13:18,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:13:18,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:13:18,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:13:18,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:13:18,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:13:18,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:13:18,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:13:18,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:13:18,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:13:18,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:13:18,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:13:18,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:13:18,473 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:13:18,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:13:18,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:13:18,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:13:18,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:13:18,476 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:13:18,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:13:18,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:13:18,477 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:13:18,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:13:18,479 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:13:18,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:13:18,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:13:18,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:13:18,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:13:18,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:13:18,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:13:18,480 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:13:18,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:13:18,481 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:13:18,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:13:18,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:13:18,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:13:18,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:13:18,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:13:18,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:13:18,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:13:18,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:13:18,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:13:18,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:13:18,484 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:13:18,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:13:18,484 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:13:18,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:13:18,485 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 453217a894ab839ac749d51e6f81154421ad61236b47a16877fbef21d8ae30a8 [2022-11-25 17:13:18,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:13:18,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:13:18,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:13:18,849 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:13:18,849 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:13:18,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-11-25 17:13:22,225 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:13:22,637 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:13:22,638 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc5d02b-b740-4075-804f-a335af9819b3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-11-25 17:13:22,655 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R/data/3e0bef501/3e1c19acfa494cdb8171cc5eaceafe7d/FLAG6183696ac [2022-11-25 17:13:22,678 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R/data/3e0bef501/3e1c19acfa494cdb8171cc5eaceafe7d [2022-11-25 17:13:22,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:13:22,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:13:22,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:13:22,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:13:22,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:13:22,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:13:22" (1/1) ... [2022-11-25 17:13:22,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca35e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:22, skipping insertion in model container [2022-11-25 17:13:22,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:13:22" (1/1) ... [2022-11-25 17:13:22,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:13:22,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:13:23,131 WARN L237 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_dcc5d02b-b740-4075-804f-a335af9819b3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7253,7266] [2022-11-25 17:13:23,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:13:23,248 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:13:23,329 WARN L237 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_dcc5d02b-b740-4075-804f-a335af9819b3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7253,7266] [2022-11-25 17:13:23,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:13:23,398 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:13:23,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:23 WrapperNode [2022-11-25 17:13:23,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:13:23,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:13:23,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:13:23,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:13:23,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:23" (1/1) ... [2022-11-25 17:13:23,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:23" (1/1) ... [2022-11-25 17:13:23,466 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 649 [2022-11-25 17:13:23,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:13:23,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:13:23,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:13:23,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:13:23,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:23" (1/1) ... [2022-11-25 17:13:23,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:23" (1/1) ... [2022-11-25 17:13:23,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:23" (1/1) ... [2022-11-25 17:13:23,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:23" (1/1) ... [2022-11-25 17:13:23,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:23" (1/1) ... [2022-11-25 17:13:23,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:23" (1/1) ... [2022-11-25 17:13:23,520 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:23" (1/1) ... [2022-11-25 17:13:23,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:23" (1/1) ... [2022-11-25 17:13:23,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:13:23,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:13:23,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:13:23,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:13:23,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:23" (1/1) ... [2022-11-25 17:13:23,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:13:23,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:13:23,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:13:23,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc5d02b-b740-4075-804f-a335af9819b3/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:13:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:13:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:13:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:13:23,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:13:23,813 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:13:23,816 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:13:24,771 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:13:24,782 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:13:24,782 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:13:24,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:13:24 BoogieIcfgContainer [2022-11-25 17:13:24,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:13:24,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:13:24,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:13:24,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:13:24,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:13:22" (1/3) ... [2022-11-25 17:13:24,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d74a79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:13:24, skipping insertion in model container [2022-11-25 17:13:24,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:23" (2/3) ... [2022-11-25 17:13:24,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d74a79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:13:24, skipping insertion in model container [2022-11-25 17:13:24,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:13:24" (3/3) ... [2022-11-25 17:13:24,796 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-11-25 17:13:24,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:13:24,821 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:13:24,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:13:24,897 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;@2aea6493, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:13:24,900 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:13:24,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 169 states have (on average 1.7218934911242603) internal successors, (291), 170 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:24,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-25 17:13:24,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:24,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:24,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:24,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:24,932 INFO L85 PathProgramCache]: Analyzing trace with hash 965210613, now seen corresponding path program 1 times [2022-11-25 17:13:24,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:24,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967899515] [2022-11-25 17:13:24,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:24,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:25,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:25,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967899515] [2022-11-25 17:13:25,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967899515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:25,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:25,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:13:25,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787386517] [2022-11-25 17:13:25,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:25,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:13:25,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:25,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:13:25,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:13:25,881 INFO L87 Difference]: Start difference. First operand has 171 states, 169 states have (on average 1.7218934911242603) internal successors, (291), 170 states have internal predecessors, (291), 0 states have call successors, (0), 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 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:26,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:26,264 INFO L93 Difference]: Finished difference Result 606 states and 981 transitions. [2022-11-25 17:13:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:13:26,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-11-25 17:13:26,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:26,297 INFO L225 Difference]: With dead ends: 606 [2022-11-25 17:13:26,298 INFO L226 Difference]: Without dead ends: 512 [2022-11-25 17:13:26,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:13:26,308 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 1755 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:26,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1755 Valid, 960 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:13:26,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-11-25 17:13:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 261. [2022-11-25 17:13:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.5) internal successors, (390), 260 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 390 transitions. [2022-11-25 17:13:26,405 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 390 transitions. Word has length 64 [2022-11-25 17:13:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:26,406 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 390 transitions. [2022-11-25 17:13:26,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:26,407 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 390 transitions. [2022-11-25 17:13:26,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 17:13:26,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:26,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:26,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:13:26,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:26,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:26,412 INFO L85 PathProgramCache]: Analyzing trace with hash -404660772, now seen corresponding path program 1 times [2022-11-25 17:13:26,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:26,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109819779] [2022-11-25 17:13:26,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:26,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:26,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:26,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109819779] [2022-11-25 17:13:26,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109819779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:26,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:26,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:13:26,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557342510] [2022-11-25 17:13:26,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:26,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:13:26,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:26,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:13:26,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:13:26,753 INFO L87 Difference]: Start difference. First operand 261 states and 390 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:27,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:27,196 INFO L93 Difference]: Finished difference Result 969 states and 1486 transitions. [2022-11-25 17:13:27,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:13:27,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-25 17:13:27,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:27,201 INFO L225 Difference]: With dead ends: 969 [2022-11-25 17:13:27,202 INFO L226 Difference]: Without dead ends: 767 [2022-11-25 17:13:27,212 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 [2022-11-25 17:13:27,215 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 880 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:27,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 848 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:13:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-11-25 17:13:27,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 761. [2022-11-25 17:13:27,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 760 states have (on average 1.5223684210526316) internal successors, (1157), 760 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1157 transitions. [2022-11-25 17:13:27,403 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1157 transitions. Word has length 65 [2022-11-25 17:13:27,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:27,404 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 1157 transitions. [2022-11-25 17:13:27,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:27,404 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1157 transitions. [2022-11-25 17:13:27,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 17:13:27,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:27,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:27,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:13:27,414 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:27,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:27,415 INFO L85 PathProgramCache]: Analyzing trace with hash 372471029, now seen corresponding path program 1 times [2022-11-25 17:13:27,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:27,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886253709] [2022-11-25 17:13:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:27,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:27,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:27,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886253709] [2022-11-25 17:13:27,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886253709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:27,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:27,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:13:27,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009774603] [2022-11-25 17:13:27,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:27,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:13:27,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:27,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:13:27,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:13:27,722 INFO L87 Difference]: Start difference. First operand 761 states and 1157 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:28,319 INFO L93 Difference]: Finished difference Result 2033 states and 3131 transitions. [2022-11-25 17:13:28,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:13:28,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-11-25 17:13:28,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:28,327 INFO L225 Difference]: With dead ends: 2033 [2022-11-25 17:13:28,327 INFO L226 Difference]: Without dead ends: 1319 [2022-11-25 17:13:28,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:13:28,331 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 941 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:28,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 233 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:13:28,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2022-11-25 17:13:28,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1317. [2022-11-25 17:13:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1316 states have (on average 1.5303951367781155) internal successors, (2014), 1316 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:28,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 2014 transitions. [2022-11-25 17:13:28,671 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 2014 transitions. Word has length 66 [2022-11-25 17:13:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:28,673 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 2014 transitions. [2022-11-25 17:13:28,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 2014 transitions. [2022-11-25 17:13:28,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 17:13:28,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:28,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:28,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:13:28,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:28,682 INFO L85 PathProgramCache]: Analyzing trace with hash 342598487, now seen corresponding path program 1 times [2022-11-25 17:13:28,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:28,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227066999] [2022-11-25 17:13:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:28,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:28,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:28,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227066999] [2022-11-25 17:13:28,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227066999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:28,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:28,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:13:28,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748215635] [2022-11-25 17:13:28,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:28,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:13:28,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:13:28,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:13:28,900 INFO L87 Difference]: Start difference. First operand 1317 states and 2014 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:29,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:29,623 INFO L93 Difference]: Finished difference Result 3529 states and 5448 transitions. [2022-11-25 17:13:29,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:13:29,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-11-25 17:13:29,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:29,636 INFO L225 Difference]: With dead ends: 3529 [2022-11-25 17:13:29,638 INFO L226 Difference]: Without dead ends: 2309 [2022-11-25 17:13:29,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:13:29,653 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 867 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:29,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 239 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:13:29,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2022-11-25 17:13:30,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2307. [2022-11-25 17:13:30,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2306 states have (on average 1.533391153512576) internal successors, (3536), 2306 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:30,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 3536 transitions. [2022-11-25 17:13:30,063 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 3536 transitions. Word has length 66 [2022-11-25 17:13:30,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:30,064 INFO L495 AbstractCegarLoop]: Abstraction has 2307 states and 3536 transitions. [2022-11-25 17:13:30,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:30,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 3536 transitions. [2022-11-25 17:13:30,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 17:13:30,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:30,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:30,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:13:30,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:30,068 INFO L85 PathProgramCache]: Analyzing trace with hash -440340154, now seen corresponding path program 1 times [2022-11-25 17:13:30,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:30,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074209297] [2022-11-25 17:13:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:30,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:30,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:30,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:30,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074209297] [2022-11-25 17:13:30,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074209297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:30,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:30,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:13:30,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791743072] [2022-11-25 17:13:30,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:30,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:13:30,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:30,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:13:30,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:13:30,254 INFO L87 Difference]: Start difference. First operand 2307 states and 3536 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:31,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:31,260 INFO L93 Difference]: Finished difference Result 6570 states and 10123 transitions. [2022-11-25 17:13:31,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:13:31,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-11-25 17:13:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:31,282 INFO L225 Difference]: With dead ends: 6570 [2022-11-25 17:13:31,282 INFO L226 Difference]: Without dead ends: 4333 [2022-11-25 17:13:31,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:13:31,290 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 897 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:31,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 235 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:13:31,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4333 states. [2022-11-25 17:13:32,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4333 to 4331. [2022-11-25 17:13:32,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 4330 states have (on average 1.530715935334873) internal successors, (6628), 4330 states have internal predecessors, (6628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 6628 transitions. [2022-11-25 17:13:32,097 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 6628 transitions. Word has length 66 [2022-11-25 17:13:32,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:32,098 INFO L495 AbstractCegarLoop]: Abstraction has 4331 states and 6628 transitions. [2022-11-25 17:13:32,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 6628 transitions. [2022-11-25 17:13:32,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 17:13:32,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:32,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:32,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:13:32,101 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:32,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:32,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1058443688, now seen corresponding path program 1 times [2022-11-25 17:13:32,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:32,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199213406] [2022-11-25 17:13:32,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:32,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:32,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:32,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199213406] [2022-11-25 17:13:32,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199213406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:32,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:32,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:13:32,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652059087] [2022-11-25 17:13:32,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:32,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:13:32,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:32,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:13:32,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:13:32,433 INFO L87 Difference]: Start difference. First operand 4331 states and 6628 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:34,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:34,031 INFO L93 Difference]: Finished difference Result 8381 states and 12813 transitions. [2022-11-25 17:13:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:13:34,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-25 17:13:34,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:34,070 INFO L225 Difference]: With dead ends: 8381 [2022-11-25 17:13:34,071 INFO L226 Difference]: Without dead ends: 8379 [2022-11-25 17:13:34,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:13:34,075 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 228 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:34,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 935 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:13:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8379 states. [2022-11-25 17:13:34,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8379 to 4459. [2022-11-25 17:13:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4459 states, 4458 states have (on average 1.515477792732167) internal successors, (6756), 4458 states have internal predecessors, (6756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:34,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4459 states to 4459 states and 6756 transitions. [2022-11-25 17:13:34,933 INFO L78 Accepts]: Start accepts. Automaton has 4459 states and 6756 transitions. Word has length 67 [2022-11-25 17:13:34,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:34,935 INFO L495 AbstractCegarLoop]: Abstraction has 4459 states and 6756 transitions. [2022-11-25 17:13:34,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:34,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4459 states and 6756 transitions. [2022-11-25 17:13:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 17:13:34,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:34,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:34,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:13:34,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:34,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:34,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1287643169, now seen corresponding path program 1 times [2022-11-25 17:13:34,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:34,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329214391] [2022-11-25 17:13:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:34,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:35,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:35,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329214391] [2022-11-25 17:13:35,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329214391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:35,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:35,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:13:35,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726042396] [2022-11-25 17:13:35,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:35,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:13:35,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:35,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:13:35,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:13:35,364 INFO L87 Difference]: Start difference. First operand 4459 states and 6756 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:39,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:39,998 INFO L93 Difference]: Finished difference Result 19542 states and 29407 transitions. [2022-11-25 17:13:39,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 17:13:39,999 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-25 17:13:39,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:40,074 INFO L225 Difference]: With dead ends: 19542 [2022-11-25 17:13:40,074 INFO L226 Difference]: Without dead ends: 16828 [2022-11-25 17:13:40,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-11-25 17:13:40,085 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 2460 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:40,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 1085 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 17:13:40,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16828 states. [2022-11-25 17:13:41,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16828 to 4554. [2022-11-25 17:13:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4554 states, 4553 states have (on average 1.5117504941796618) internal successors, (6883), 4553 states have internal predecessors, (6883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4554 states to 4554 states and 6883 transitions. [2022-11-25 17:13:41,554 INFO L78 Accepts]: Start accepts. Automaton has 4554 states and 6883 transitions. Word has length 68 [2022-11-25 17:13:41,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:41,555 INFO L495 AbstractCegarLoop]: Abstraction has 4554 states and 6883 transitions. [2022-11-25 17:13:41,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:41,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4554 states and 6883 transitions. [2022-11-25 17:13:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 17:13:41,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:41,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:41,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:13:41,566 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:41,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:41,566 INFO L85 PathProgramCache]: Analyzing trace with hash -106958945, now seen corresponding path program 1 times [2022-11-25 17:13:41,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:41,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847292530] [2022-11-25 17:13:41,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:41,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:41,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:41,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847292530] [2022-11-25 17:13:41,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847292530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:41,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:41,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:13:41,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731554838] [2022-11-25 17:13:41,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:41,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:13:41,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:41,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:13:41,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:13:41,819 INFO L87 Difference]: Start difference. First operand 4554 states and 6883 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:43,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:43,255 INFO L93 Difference]: Finished difference Result 12206 states and 18485 transitions. [2022-11-25 17:13:43,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:13:43,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-25 17:13:43,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:43,279 INFO L225 Difference]: With dead ends: 12206 [2022-11-25 17:13:43,279 INFO L226 Difference]: Without dead ends: 8156 [2022-11-25 17:13:43,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:13:43,288 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 187 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:43,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 582 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:13:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8156 states. [2022-11-25 17:13:44,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8156 to 8154. [2022-11-25 17:13:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8154 states, 8153 states have (on average 1.5006745983073715) internal successors, (12235), 8153 states have internal predecessors, (12235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:44,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8154 states to 8154 states and 12235 transitions. [2022-11-25 17:13:44,899 INFO L78 Accepts]: Start accepts. Automaton has 8154 states and 12235 transitions. Word has length 68 [2022-11-25 17:13:44,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:44,900 INFO L495 AbstractCegarLoop]: Abstraction has 8154 states and 12235 transitions. [2022-11-25 17:13:44,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:44,901 INFO L276 IsEmpty]: Start isEmpty. Operand 8154 states and 12235 transitions. [2022-11-25 17:13:44,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 17:13:44,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:44,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:44,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:13:44,905 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:44,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash 494119873, now seen corresponding path program 1 times [2022-11-25 17:13:44,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:44,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832164185] [2022-11-25 17:13:44,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:44,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:44,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:44,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832164185] [2022-11-25 17:13:44,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832164185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:44,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:44,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:13:44,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485055125] [2022-11-25 17:13:44,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:44,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:13:44,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:13:44,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:13:44,993 INFO L87 Difference]: Start difference. First operand 8154 states and 12235 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:46,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:46,945 INFO L93 Difference]: Finished difference Result 14045 states and 21073 transitions. [2022-11-25 17:13:46,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:13:46,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-25 17:13:46,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:46,968 INFO L225 Difference]: With dead ends: 14045 [2022-11-25 17:13:46,969 INFO L226 Difference]: Without dead ends: 9847 [2022-11-25 17:13:46,975 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 [2022-11-25 17:13:46,976 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 147 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:46,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 456 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:13:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9847 states. [2022-11-25 17:13:48,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9847 to 9725. [2022-11-25 17:13:48,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9725 states, 9724 states have (on average 1.4762443438914028) internal successors, (14355), 9724 states have internal predecessors, (14355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:48,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9725 states to 9725 states and 14355 transitions. [2022-11-25 17:13:48,645 INFO L78 Accepts]: Start accepts. Automaton has 9725 states and 14355 transitions. Word has length 69 [2022-11-25 17:13:48,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:48,646 INFO L495 AbstractCegarLoop]: Abstraction has 9725 states and 14355 transitions. [2022-11-25 17:13:48,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:48,647 INFO L276 IsEmpty]: Start isEmpty. Operand 9725 states and 14355 transitions. [2022-11-25 17:13:48,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 17:13:48,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:48,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:48,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:13:48,651 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:48,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:48,652 INFO L85 PathProgramCache]: Analyzing trace with hash -760950752, now seen corresponding path program 1 times [2022-11-25 17:13:48,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:48,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556723870] [2022-11-25 17:13:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:48,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:48,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:48,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556723870] [2022-11-25 17:13:48,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556723870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:48,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:48,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:13:48,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566617826] [2022-11-25 17:13:48,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:48,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:13:48,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:48,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:13:48,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:13:48,807 INFO L87 Difference]: Start difference. First operand 9725 states and 14355 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:52,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:52,245 INFO L93 Difference]: Finished difference Result 18494 states and 27406 transitions. [2022-11-25 17:13:52,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:13:52,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-25 17:13:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:52,285 INFO L225 Difference]: With dead ends: 18494 [2022-11-25 17:13:52,285 INFO L226 Difference]: Without dead ends: 17004 [2022-11-25 17:13:52,293 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 [2022-11-25 17:13:52,294 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 995 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:52,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1096 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:13:52,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17004 states. [2022-11-25 17:13:54,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17004 to 11195. [2022-11-25 17:13:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11195 states, 11194 states have (on average 1.4744505985349294) internal successors, (16505), 11194 states have internal predecessors, (16505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11195 states to 11195 states and 16505 transitions. [2022-11-25 17:13:54,301 INFO L78 Accepts]: Start accepts. Automaton has 11195 states and 16505 transitions. Word has length 69 [2022-11-25 17:13:54,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:54,302 INFO L495 AbstractCegarLoop]: Abstraction has 11195 states and 16505 transitions. [2022-11-25 17:13:54,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:54,302 INFO L276 IsEmpty]: Start isEmpty. Operand 11195 states and 16505 transitions. [2022-11-25 17:13:54,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 17:13:54,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:54,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:54,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:13:54,306 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:54,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash 192736000, now seen corresponding path program 1 times [2022-11-25 17:13:54,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:54,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437545179] [2022-11-25 17:13:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:54,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:54,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:54,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437545179] [2022-11-25 17:13:54,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437545179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:54,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:54,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:13:54,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95693070] [2022-11-25 17:13:54,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:54,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:13:54,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:54,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:13:54,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:13:54,384 INFO L87 Difference]: Start difference. First operand 11195 states and 16505 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:57,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:57,086 INFO L93 Difference]: Finished difference Result 22630 states and 33315 transitions. [2022-11-25 17:13:57,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:13:57,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-25 17:13:57,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:57,116 INFO L225 Difference]: With dead ends: 22630 [2022-11-25 17:13:57,117 INFO L226 Difference]: Without dead ends: 13651 [2022-11-25 17:13:57,131 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 [2022-11-25 17:13:57,132 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 154 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:57,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 471 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:13:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13651 states. [2022-11-25 17:13:59,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13651 to 13509. [2022-11-25 17:13:59,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13509 states, 13508 states have (on average 1.4427746520580398) internal successors, (19489), 13508 states have internal predecessors, (19489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13509 states to 13509 states and 19489 transitions. [2022-11-25 17:13:59,985 INFO L78 Accepts]: Start accepts. Automaton has 13509 states and 19489 transitions. Word has length 69 [2022-11-25 17:13:59,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:59,985 INFO L495 AbstractCegarLoop]: Abstraction has 13509 states and 19489 transitions. [2022-11-25 17:13:59,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:59,986 INFO L276 IsEmpty]: Start isEmpty. Operand 13509 states and 19489 transitions. [2022-11-25 17:13:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 17:13:59,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:59,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:59,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:13:59,990 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:59,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:59,991 INFO L85 PathProgramCache]: Analyzing trace with hash -334349023, now seen corresponding path program 1 times [2022-11-25 17:13:59,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:59,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557914480] [2022-11-25 17:13:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:59,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:14:00,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:00,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557914480] [2022-11-25 17:14:00,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557914480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:00,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:00,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:14:00,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291851589] [2022-11-25 17:14:00,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:00,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:14:00,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:00,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:14:00,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:14:00,056 INFO L87 Difference]: Start difference. First operand 13509 states and 19489 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:04,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:04,240 INFO L93 Difference]: Finished difference Result 33983 states and 48932 transitions. [2022-11-25 17:14:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:14:04,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-25 17:14:04,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:04,284 INFO L225 Difference]: With dead ends: 33983 [2022-11-25 17:14:04,284 INFO L226 Difference]: Without dead ends: 22473 [2022-11-25 17:14:04,302 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 [2022-11-25 17:14:04,303 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 161 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:04,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 454 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:14:04,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22473 states. [2022-11-25 17:14:08,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22473 to 22471. [2022-11-25 17:14:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22471 states, 22470 states have (on average 1.4213173119715177) internal successors, (31937), 22470 states have internal predecessors, (31937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22471 states to 22471 states and 31937 transitions. [2022-11-25 17:14:08,857 INFO L78 Accepts]: Start accepts. Automaton has 22471 states and 31937 transitions. Word has length 69 [2022-11-25 17:14:08,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:08,858 INFO L495 AbstractCegarLoop]: Abstraction has 22471 states and 31937 transitions. [2022-11-25 17:14:08,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:08,858 INFO L276 IsEmpty]: Start isEmpty. Operand 22471 states and 31937 transitions. [2022-11-25 17:14:08,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 17:14:08,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:08,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:08,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:14:08,868 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:08,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:08,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1412359137, now seen corresponding path program 1 times [2022-11-25 17:14:08,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:08,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6064745] [2022-11-25 17:14:08,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:08,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:14:09,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:09,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6064745] [2022-11-25 17:14:09,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6064745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:09,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:09,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:14:09,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697948817] [2022-11-25 17:14:09,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:09,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:14:09,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:09,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:14:09,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:14:09,015 INFO L87 Difference]: Start difference. First operand 22471 states and 31937 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:16,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:16,779 INFO L93 Difference]: Finished difference Result 44005 states and 62924 transitions. [2022-11-25 17:14:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:14:16,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-25 17:14:16,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:16,846 INFO L225 Difference]: With dead ends: 44005 [2022-11-25 17:14:16,846 INFO L226 Difference]: Without dead ends: 38867 [2022-11-25 17:14:16,862 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 [2022-11-25 17:14:16,863 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 984 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:16,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 1295 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:14:16,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38867 states. [2022-11-25 17:14:22,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38867 to 27565. [2022-11-25 17:14:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27565 states, 27564 states have (on average 1.421092729647366) internal successors, (39171), 27564 states have internal predecessors, (39171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27565 states to 27565 states and 39171 transitions. [2022-11-25 17:14:22,237 INFO L78 Accepts]: Start accepts. Automaton has 27565 states and 39171 transitions. Word has length 69 [2022-11-25 17:14:22,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:22,237 INFO L495 AbstractCegarLoop]: Abstraction has 27565 states and 39171 transitions. [2022-11-25 17:14:22,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:22,237 INFO L276 IsEmpty]: Start isEmpty. Operand 27565 states and 39171 transitions. [2022-11-25 17:14:22,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 17:14:22,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:22,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:22,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:14:22,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:22,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash -677295103, now seen corresponding path program 1 times [2022-11-25 17:14:22,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:22,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292384744] [2022-11-25 17:14:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:22,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:14:22,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:22,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292384744] [2022-11-25 17:14:22,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292384744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:22,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:22,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:14:22,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538726918] [2022-11-25 17:14:22,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:22,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:14:22,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:22,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:14:22,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:14:22,392 INFO L87 Difference]: Start difference. First operand 27565 states and 39171 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:31,432 INFO L93 Difference]: Finished difference Result 52793 states and 75507 transitions. [2022-11-25 17:14:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:14:31,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-25 17:14:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:31,500 INFO L225 Difference]: With dead ends: 52793 [2022-11-25 17:14:31,500 INFO L226 Difference]: Without dead ends: 43871 [2022-11-25 17:14:31,511 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 [2022-11-25 17:14:31,512 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1065 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:31,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 1197 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:14:31,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43871 states. [2022-11-25 17:14:39,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43871 to 33669. [2022-11-25 17:14:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33669 states, 33668 states have (on average 1.4223892123084234) internal successors, (47889), 33668 states have internal predecessors, (47889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33669 states to 33669 states and 47889 transitions. [2022-11-25 17:14:39,184 INFO L78 Accepts]: Start accepts. Automaton has 33669 states and 47889 transitions. Word has length 69 [2022-11-25 17:14:39,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:39,184 INFO L495 AbstractCegarLoop]: Abstraction has 33669 states and 47889 transitions. [2022-11-25 17:14:39,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:39,184 INFO L276 IsEmpty]: Start isEmpty. Operand 33669 states and 47889 transitions. [2022-11-25 17:14:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-25 17:14:39,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:39,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:39,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:14:39,190 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:39,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:39,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1338735588, now seen corresponding path program 1 times [2022-11-25 17:14:39,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:39,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347515313] [2022-11-25 17:14:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:39,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:14:39,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:39,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347515313] [2022-11-25 17:14:39,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347515313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:39,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:39,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:14:39,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421601108] [2022-11-25 17:14:39,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:39,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:14:39,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:39,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:14:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:14:39,351 INFO L87 Difference]: Start difference. First operand 33669 states and 47889 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)