./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label27.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/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_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label27.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/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_e5682b11-1b06-40d4-83f9-5a129792075c/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 a6bf1264929a0645d918c583a519b6be036274699656a22f3fed375c55deb5c8 --- 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 18:16:20,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:16:20,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:16:20,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:16:20,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:16:20,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:16:20,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:16:20,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:16:20,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:16:20,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:16:20,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:16:20,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:16:20,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:16:20,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:16:20,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:16:20,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:16:20,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:16:20,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:16:20,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:16:20,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:16:20,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:16:20,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:16:20,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:16:20,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:16:20,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:16:20,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:16:20,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:16:20,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:16:20,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:16:20,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:16:20,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:16:20,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:16:20,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:16:20,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:16:20,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:16:20,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:16:20,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:16:20,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:16:20,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:16:20,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:16:20,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:16:20,493 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:16:20,518 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:16:20,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:16:20,528 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:16:20,528 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:16:20,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:16:20,529 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:16:20,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:16:20,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:16:20,531 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:16:20,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:16:20,531 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:16:20,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:16:20,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:16:20,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:16:20,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:16:20,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:16:20,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:16:20,533 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:16:20,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:16:20,533 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:16:20,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:16:20,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:16:20,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:16:20,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:16:20,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:16:20,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:16:20,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:16:20,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:16:20,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:16:20,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:16:20,536 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:16:20,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:16:20,537 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:16:20,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:16:20,537 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_e5682b11-1b06-40d4-83f9-5a129792075c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6bf1264929a0645d918c583a519b6be036274699656a22f3fed375c55deb5c8 [2022-11-25 18:16:20,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:16:20,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:16:20,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:16:20,847 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:16:20,847 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:16:20,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/eca-rers2012/Problem12_label27.c [2022-11-25 18:16:23,931 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:16:24,578 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:16:24,580 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/sv-benchmarks/c/eca-rers2012/Problem12_label27.c [2022-11-25 18:16:24,624 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/data/6b8d1b69e/c2531587137e48a98808b6cfc5e32a22/FLAGd333153db [2022-11-25 18:16:24,644 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/data/6b8d1b69e/c2531587137e48a98808b6cfc5e32a22 [2022-11-25 18:16:24,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:16:24,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:16:24,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:16:24,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:16:24,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:16:24,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:16:24" (1/1) ... [2022-11-25 18:16:24,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c202bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:24, skipping insertion in model container [2022-11-25 18:16:24,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:16:24" (1/1) ... [2022-11-25 18:16:24,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:16:24,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:16:25,067 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_e5682b11-1b06-40d4-83f9-5a129792075c/sv-benchmarks/c/eca-rers2012/Problem12_label27.c[4120,4133] [2022-11-25 18:16:26,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:16:26,273 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:16:26,314 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_e5682b11-1b06-40d4-83f9-5a129792075c/sv-benchmarks/c/eca-rers2012/Problem12_label27.c[4120,4133] [2022-11-25 18:16:26,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:16:26,952 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:16:26,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26 WrapperNode [2022-11-25 18:16:26,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:16:26,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:16:26,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:16:26,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:16:26,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2022-11-25 18:16:27,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2022-11-25 18:16:27,450 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-25 18:16:27,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:16:27,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:16:27,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:16:27,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:16:27,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2022-11-25 18:16:27,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2022-11-25 18:16:27,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2022-11-25 18:16:27,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2022-11-25 18:16:27,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2022-11-25 18:16:27,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2022-11-25 18:16:27,786 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2022-11-25 18:16:27,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2022-11-25 18:16:27,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:16:27,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:16:27,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:16:27,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:16:27,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (1/1) ... [2022-11-25 18:16:27,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:16:27,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:16:27,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:16:27,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:16:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:16:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:16:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:16:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:16:28,164 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:16:28,166 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:16:33,531 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:16:33,559 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:16:33,559 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:16:33,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:16:33 BoogieIcfgContainer [2022-11-25 18:16:33,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:16:33,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:16:33,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:16:33,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:16:33,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:16:24" (1/3) ... [2022-11-25 18:16:33,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd44554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:16:33, skipping insertion in model container [2022-11-25 18:16:33,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:26" (2/3) ... [2022-11-25 18:16:33,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd44554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:16:33, skipping insertion in model container [2022-11-25 18:16:33,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:16:33" (3/3) ... [2022-11-25 18:16:33,579 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label27.c [2022-11-25 18:16:33,599 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:16:33,599 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:16:33,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:16:33,705 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;@491a94de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:16:33,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:16:33,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 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 18:16:33,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-25 18:16:33,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:16:33,726 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] [2022-11-25 18:16:33,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:16:33,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:33,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1843609039, now seen corresponding path program 1 times [2022-11-25 18:16:33,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:33,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785921220] [2022-11-25 18:16:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:33,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:34,100 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 18:16:34,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:34,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785921220] [2022-11-25 18:16:34,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785921220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:34,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:34,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:16:34,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20020062] [2022-11-25 18:16:34,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:34,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:16:34,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:34,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:16:34,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:16:34,147 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 18:16:39,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:16:39,045 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-11-25 18:16:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:16:39,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2022-11-25 18:16:39,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:16:39,071 INFO L225 Difference]: With dead ends: 2388 [2022-11-25 18:16:39,071 INFO L226 Difference]: Without dead ends: 1506 [2022-11-25 18:16:39,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:16:39,082 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 866 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:16:39,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 156 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-25 18:16:39,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-11-25 18:16:39,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-11-25 18:16:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.8458471760797341) internal successors, (2778), 1505 states have internal predecessors, (2778), 0 states have call successors, (0), 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 18:16:39,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2778 transitions. [2022-11-25 18:16:39,200 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2778 transitions. Word has length 31 [2022-11-25 18:16:39,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:16:39,201 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2778 transitions. [2022-11-25 18:16:39,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 18:16:39,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2778 transitions. [2022-11-25 18:16:39,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-25 18:16:39,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:16:39,205 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:39,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:16:39,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:16:39,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:39,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1399644642, now seen corresponding path program 1 times [2022-11-25 18:16:39,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:39,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424174328] [2022-11-25 18:16:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:39,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:39,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:39,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424174328] [2022-11-25 18:16:39,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424174328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:39,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:39,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:16:39,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271465065] [2022-11-25 18:16:39,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:39,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:16:39,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:16:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:16:39,601 INFO L87 Difference]: Start difference. First operand 1506 states and 2778 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 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 18:16:43,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:16:43,972 INFO L93 Difference]: Finished difference Result 3761 states and 6893 transitions. [2022-11-25 18:16:43,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:16:43,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-11-25 18:16:43,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:16:43,983 INFO L225 Difference]: With dead ends: 3761 [2022-11-25 18:16:43,983 INFO L226 Difference]: Without dead ends: 2257 [2022-11-25 18:16:43,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:16:43,987 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:16:43,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 448 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 18:16:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-11-25 18:16:44,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2022-11-25 18:16:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.4419326241134751) internal successors, (3253), 2256 states have internal predecessors, (3253), 0 states have call successors, (0), 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 18:16:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3253 transitions. [2022-11-25 18:16:44,050 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3253 transitions. Word has length 100 [2022-11-25 18:16:44,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:16:44,051 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3253 transitions. [2022-11-25 18:16:44,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 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 18:16:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3253 transitions. [2022-11-25 18:16:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-25 18:16:44,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:16:44,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:44,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:16:44,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:16:44,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1168094211, now seen corresponding path program 1 times [2022-11-25 18:16:44,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:44,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770017705] [2022-11-25 18:16:44,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:44,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:44,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:44,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770017705] [2022-11-25 18:16:44,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770017705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:16:44,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269774125] [2022-11-25 18:16:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:44,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:16:44,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:16:44,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:16:44,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:16:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:44,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:16:44,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:16:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:44,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:16:44,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269774125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:44,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:16:44,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-25 18:16:44,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882976448] [2022-11-25 18:16:44,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:44,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:16:44,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:44,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:16:44,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:16:44,752 INFO L87 Difference]: Start difference. First operand 2257 states and 3253 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 18:16:49,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:16:49,760 INFO L93 Difference]: Finished difference Result 6765 states and 9754 transitions. [2022-11-25 18:16:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:16:49,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-11-25 18:16:49,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:16:49,776 INFO L225 Difference]: With dead ends: 6765 [2022-11-25 18:16:49,776 INFO L226 Difference]: Without dead ends: 4510 [2022-11-25 18:16:49,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:16:49,780 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 739 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 2957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:16:49,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 618 Invalid, 2957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-25 18:16:49,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2022-11-25 18:16:49,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4510. [2022-11-25 18:16:49,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4509 states have (on average 1.2929696163229096) internal successors, (5830), 4509 states have internal predecessors, (5830), 0 states have call successors, (0), 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 18:16:49,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 5830 transitions. [2022-11-25 18:16:49,868 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 5830 transitions. Word has length 102 [2022-11-25 18:16:49,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:16:49,869 INFO L495 AbstractCegarLoop]: Abstraction has 4510 states and 5830 transitions. [2022-11-25 18:16:49,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 18:16:49,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 5830 transitions. [2022-11-25 18:16:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-25 18:16:49,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:16:49,872 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:49,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:16:50,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:16:50,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:16:50,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:50,089 INFO L85 PathProgramCache]: Analyzing trace with hash -958136910, now seen corresponding path program 1 times [2022-11-25 18:16:50,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:50,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253311348] [2022-11-25 18:16:50,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:50,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:50,337 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:50,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:50,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253311348] [2022-11-25 18:16:50,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253311348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:50,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:50,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:16:50,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566250676] [2022-11-25 18:16:50,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:50,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:16:50,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:50,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:16:50,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:16:50,348 INFO L87 Difference]: Start difference. First operand 4510 states and 5830 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:16:56,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:16:56,297 INFO L93 Difference]: Finished difference Result 14275 states and 18284 transitions. [2022-11-25 18:16:56,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:16:56,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-11-25 18:16:56,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:16:56,329 INFO L225 Difference]: With dead ends: 14275 [2022-11-25 18:16:56,329 INFO L226 Difference]: Without dead ends: 9767 [2022-11-25 18:16:56,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:16:56,337 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2182 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 5423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:16:56,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2182 Valid, 164 Invalid, 5423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-25 18:16:56,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-11-25 18:16:56,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2022-11-25 18:16:56,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.255785377841491) internal successors, (12264), 9766 states have internal predecessors, (12264), 0 states have call successors, (0), 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 18:16:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12264 transitions. [2022-11-25 18:16:56,541 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12264 transitions. Word has length 108 [2022-11-25 18:16:56,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:16:56,542 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 12264 transitions. [2022-11-25 18:16:56,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:16:56,542 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12264 transitions. [2022-11-25 18:16:56,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 18:16:56,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:16:56,545 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:56,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:16:56,546 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:16:56,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:56,547 INFO L85 PathProgramCache]: Analyzing trace with hash 663593248, now seen corresponding path program 1 times [2022-11-25 18:16:56,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:56,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980330040] [2022-11-25 18:16:56,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:56,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:56,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:56,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980330040] [2022-11-25 18:16:56,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980330040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:56,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:56,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:16:56,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240228769] [2022-11-25 18:16:56,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:56,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:16:56,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:56,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:16:56,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:16:56,952 INFO L87 Difference]: Start difference. First operand 9767 states and 12264 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 18:17:01,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:17:01,194 INFO L93 Difference]: Finished difference Result 21822 states and 27290 transitions. [2022-11-25 18:17:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:17:01,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2022-11-25 18:17:01,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:17:01,236 INFO L225 Difference]: With dead ends: 21822 [2022-11-25 18:17:01,236 INFO L226 Difference]: Without dead ends: 12771 [2022-11-25 18:17:01,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:17:01,246 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 702 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3049 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 3049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:17:01,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 612 Invalid, 3315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 3049 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 18:17:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12771 states. [2022-11-25 18:17:01,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12771 to 12020. [2022-11-25 18:17:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.2085032032615026) internal successors, (14525), 12019 states have internal predecessors, (14525), 0 states have call successors, (0), 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 18:17:01,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 14525 transitions. [2022-11-25 18:17:01,583 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 14525 transitions. Word has length 179 [2022-11-25 18:17:01,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:17:01,584 INFO L495 AbstractCegarLoop]: Abstraction has 12020 states and 14525 transitions. [2022-11-25 18:17:01,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 18:17:01,584 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 14525 transitions. [2022-11-25 18:17:01,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-25 18:17:01,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:17:01,588 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:01,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:17:01,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:17:01,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:17:01,590 INFO L85 PathProgramCache]: Analyzing trace with hash 533142505, now seen corresponding path program 1 times [2022-11-25 18:17:01,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:17:01,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785290355] [2022-11-25 18:17:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:01,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:17:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:01,932 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-25 18:17:01,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:17:01,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785290355] [2022-11-25 18:17:01,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785290355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:17:01,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:17:01,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:17:01,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433538736] [2022-11-25 18:17:01,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:17:01,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:17:01,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:17:01,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:17:01,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:17:01,944 INFO L87 Difference]: Start difference. First operand 12020 states and 14525 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 18:17:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:17:06,189 INFO L93 Difference]: Finished difference Result 31550 states and 38845 transitions. [2022-11-25 18:17:06,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:17:06,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 244 [2022-11-25 18:17:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:17:06,230 INFO L225 Difference]: With dead ends: 31550 [2022-11-25 18:17:06,231 INFO L226 Difference]: Without dead ends: 20283 [2022-11-25 18:17:06,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:17:06,244 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:17:06,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 312 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 18:17:06,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20283 states. [2022-11-25 18:17:06,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20283 to 18779. [2022-11-25 18:17:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18779 states, 18778 states have (on average 1.1888380019171372) internal successors, (22324), 18778 states have internal predecessors, (22324), 0 states have call successors, (0), 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 18:17:06,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 22324 transitions. [2022-11-25 18:17:06,655 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 22324 transitions. Word has length 244 [2022-11-25 18:17:06,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:17:06,656 INFO L495 AbstractCegarLoop]: Abstraction has 18779 states and 22324 transitions. [2022-11-25 18:17:06,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 18:17:06,656 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 22324 transitions. [2022-11-25 18:17:06,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-25 18:17:06,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:17:06,662 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:17:06,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:17:06,663 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:17:06,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:17:06,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1736822700, now seen corresponding path program 1 times [2022-11-25 18:17:06,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:17:06,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617630587] [2022-11-25 18:17:06,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:06,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:17:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-25 18:17:06,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:17:07,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617630587] [2022-11-25 18:17:07,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617630587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:17:07,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:17:07,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:17:07,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680855453] [2022-11-25 18:17:07,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:17:07,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:17:07,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:17:07,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:17:07,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:17:07,004 INFO L87 Difference]: Start difference. First operand 18779 states and 22324 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 18:17:10,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:17:10,949 INFO L93 Difference]: Finished difference Result 43564 states and 53013 transitions. [2022-11-25 18:17:10,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:17:10,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 330 [2022-11-25 18:17:10,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:17:10,987 INFO L225 Difference]: With dead ends: 43564 [2022-11-25 18:17:10,987 INFO L226 Difference]: Without dead ends: 25538 [2022-11-25 18:17:11,000 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 18:17:11,001 INFO L413 NwaCegarLoop]: 1208 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:17:11,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1216 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 18:17:11,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2022-11-25 18:17:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 24036. [2022-11-25 18:17:11,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24036 states, 24035 states have (on average 1.1785313085084252) internal successors, (28326), 24035 states have internal predecessors, (28326), 0 states have call successors, (0), 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 18:17:11,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24036 states to 24036 states and 28326 transitions. [2022-11-25 18:17:11,369 INFO L78 Accepts]: Start accepts. Automaton has 24036 states and 28326 transitions. Word has length 330 [2022-11-25 18:17:11,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:17:11,370 INFO L495 AbstractCegarLoop]: Abstraction has 24036 states and 28326 transitions. [2022-11-25 18:17:11,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 18:17:11,371 INFO L276 IsEmpty]: Start isEmpty. Operand 24036 states and 28326 transitions. [2022-11-25 18:17:11,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-11-25 18:17:11,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:17:11,379 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:17:11,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:17:11,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:17:11,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:17:11,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1107005626, now seen corresponding path program 1 times [2022-11-25 18:17:11,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:17:11,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758441181] [2022-11-25 18:17:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:11,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:17:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-25 18:17:11,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:17:11,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758441181] [2022-11-25 18:17:11,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758441181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:17:11,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:17:11,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:17:11,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585273341] [2022-11-25 18:17:11,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:17:11,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:17:11,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:17:11,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:17:11,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:17:11,759 INFO L87 Difference]: Start difference. First operand 24036 states and 28326 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 18:17:16,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:17:16,262 INFO L93 Difference]: Finished difference Result 60837 states and 71503 transitions. [2022-11-25 18:17:16,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:17:16,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 358 [2022-11-25 18:17:16,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:17:16,338 INFO L225 Difference]: With dead ends: 60837 [2022-11-25 18:17:16,338 INFO L226 Difference]: Without dead ends: 37554 [2022-11-25 18:17:16,358 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 18:17:16,359 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 635 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 2958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:17:16,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1247 Invalid, 2958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 18:17:16,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37554 states. [2022-11-25 18:17:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37554 to 35301. [2022-11-25 18:17:16,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35301 states, 35300 states have (on average 1.1668555240793201) internal successors, (41190), 35300 states have internal predecessors, (41190), 0 states have call successors, (0), 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 18:17:17,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35301 states to 35301 states and 41190 transitions. [2022-11-25 18:17:17,052 INFO L78 Accepts]: Start accepts. Automaton has 35301 states and 41190 transitions. Word has length 358 [2022-11-25 18:17:17,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:17:17,053 INFO L495 AbstractCegarLoop]: Abstraction has 35301 states and 41190 transitions. [2022-11-25 18:17:17,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 18:17:17,054 INFO L276 IsEmpty]: Start isEmpty. Operand 35301 states and 41190 transitions. [2022-11-25 18:17:17,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-11-25 18:17:17,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:17:17,066 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:17:17,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:17:17,066 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:17:17,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:17:17,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1819166716, now seen corresponding path program 1 times [2022-11-25 18:17:17,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:17:17,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807522617] [2022-11-25 18:17:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:17,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:17:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-25 18:17:17,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:17:17,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807522617] [2022-11-25 18:17:17,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807522617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:17:17,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:17:17,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:17:17,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192274047] [2022-11-25 18:17:17,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:17:17,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:17:17,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:17:17,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:17:17,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:17:17,439 INFO L87 Difference]: Start difference. First operand 35301 states and 41190 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 18:17:22,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:17:22,090 INFO L93 Difference]: Finished difference Result 102893 states and 120518 transitions. [2022-11-25 18:17:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:17:22,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 362 [2022-11-25 18:17:22,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:17:22,197 INFO L225 Difference]: With dead ends: 102893 [2022-11-25 18:17:22,197 INFO L226 Difference]: Without dead ends: 63839 [2022-11-25 18:17:22,219 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 18:17:22,220 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 762 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:17:22,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1315 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 18:17:22,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63839 states. [2022-11-25 18:17:22,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63839 to 53325. [2022-11-25 18:17:22,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53325 states, 53324 states have (on average 1.1311416997974646) internal successors, (60317), 53324 states have internal predecessors, (60317), 0 states have call successors, (0), 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 18:17:23,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53325 states to 53325 states and 60317 transitions. [2022-11-25 18:17:23,234 INFO L78 Accepts]: Start accepts. Automaton has 53325 states and 60317 transitions. Word has length 362 [2022-11-25 18:17:23,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:17:23,237 INFO L495 AbstractCegarLoop]: Abstraction has 53325 states and 60317 transitions. [2022-11-25 18:17:23,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 18:17:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand 53325 states and 60317 transitions. [2022-11-25 18:17:23,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-11-25 18:17:23,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:17:23,247 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:17:23,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:17:23,247 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:17:23,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:17:23,248 INFO L85 PathProgramCache]: Analyzing trace with hash 583367852, now seen corresponding path program 1 times [2022-11-25 18:17:23,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:17:23,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470529763] [2022-11-25 18:17:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:23,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:17:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-25 18:17:23,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:17:23,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470529763] [2022-11-25 18:17:23,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470529763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:17:23,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:17:23,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:17:23,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282201658] [2022-11-25 18:17:23,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:17:23,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:17:23,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:17:23,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:17:23,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:17:23,744 INFO L87 Difference]: Start difference. First operand 53325 states and 60317 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 18:17:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:17:28,460 INFO L93 Difference]: Finished difference Result 135186 states and 154639 transitions. [2022-11-25 18:17:28,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:17:28,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 369 [2022-11-25 18:17:28,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:17:28,571 INFO L225 Difference]: With dead ends: 135186 [2022-11-25 18:17:28,572 INFO L226 Difference]: Without dead ends: 82614 [2022-11-25 18:17:28,594 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 18:17:28,595 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 720 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 2811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:17:28,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1236 Invalid, 2811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2115 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 18:17:28,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82614 states. [2022-11-25 18:17:29,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82614 to 76606. [2022-11-25 18:17:29,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76606 states, 76605 states have (on average 1.1163762156517198) internal successors, (85520), 76605 states have internal predecessors, (85520), 0 states have call successors, (0), 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 18:17:29,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76606 states to 76606 states and 85520 transitions. [2022-11-25 18:17:29,908 INFO L78 Accepts]: Start accepts. Automaton has 76606 states and 85520 transitions. Word has length 369 [2022-11-25 18:17:29,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:17:29,908 INFO L495 AbstractCegarLoop]: Abstraction has 76606 states and 85520 transitions. [2022-11-25 18:17:29,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 18:17:29,908 INFO L276 IsEmpty]: Start isEmpty. Operand 76606 states and 85520 transitions. [2022-11-25 18:17:29,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-11-25 18:17:29,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:17:29,930 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:29,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:17:29,931 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:17:29,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:17:29,932 INFO L85 PathProgramCache]: Analyzing trace with hash 52626568, now seen corresponding path program 1 times [2022-11-25 18:17:29,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:17:29,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854291384] [2022-11-25 18:17:29,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:29,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:17:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 405 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:17:32,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:17:32,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854291384] [2022-11-25 18:17:32,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854291384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:17:32,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531859964] [2022-11-25 18:17:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:32,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:17:32,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:17:32,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:17:32,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:17:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:32,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:17:32,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:17:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-25 18:17:33,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:17:33,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531859964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:17:33,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:17:33,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-25 18:17:33,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219006581] [2022-11-25 18:17:33,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:17:33,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:17:33,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:17:33,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:17:33,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:17:33,784 INFO L87 Difference]: Start difference. First operand 76606 states and 85520 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 18:17:41,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:17:41,923 INFO L93 Difference]: Finished difference Result 236573 states and 265027 transitions. [2022-11-25 18:17:41,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:17:41,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 466 [2022-11-25 18:17:41,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:17:42,166 INFO L225 Difference]: With dead ends: 236573 [2022-11-25 18:17:42,166 INFO L226 Difference]: Without dead ends: 160720 [2022-11-25 18:17:42,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:17:42,216 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1780 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4742 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 5299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 4742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:17:42,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1780 Valid, 30 Invalid, 5299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 4742 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-25 18:17:42,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160720 states. [2022-11-25 18:17:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160720 to 159216. [2022-11-25 18:17:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159216 states, 159215 states have (on average 1.1147442137989512) internal successors, (177484), 159215 states have internal predecessors, (177484), 0 states have call successors, (0), 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 18:17:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159216 states to 159216 states and 177484 transitions. [2022-11-25 18:17:44,870 INFO L78 Accepts]: Start accepts. Automaton has 159216 states and 177484 transitions. Word has length 466 [2022-11-25 18:17:44,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:17:44,871 INFO L495 AbstractCegarLoop]: Abstraction has 159216 states and 177484 transitions. [2022-11-25 18:17:44,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 18:17:44,872 INFO L276 IsEmpty]: Start isEmpty. Operand 159216 states and 177484 transitions. [2022-11-25 18:17:44,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-11-25 18:17:44,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:17:44,890 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 18:17:44,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 18:17:45,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 18:17:45,097 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:17:45,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:17:45,097 INFO L85 PathProgramCache]: Analyzing trace with hash 918118859, now seen corresponding path program 1 times [2022-11-25 18:17:45,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:17:45,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235271248] [2022-11-25 18:17:45,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:45,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:17:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 372 proven. 108 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-25 18:17:47,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:17:47,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235271248] [2022-11-25 18:17:47,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235271248] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:17:47,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069455903] [2022-11-25 18:17:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:47,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:17:47,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:17:47,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:17:47,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:17:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:47,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:17:47,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:17:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 401 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-25 18:17:47,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:17:47,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069455903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:17:47,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:17:47,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-25 18:17:47,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898659664] [2022-11-25 18:17:47,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:17:47,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:17:47,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:17:47,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:17:47,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:17:47,557 INFO L87 Difference]: Start difference. First operand 159216 states and 177484 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 18:17:53,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:17:53,203 INFO L93 Difference]: Finished difference Result 353727 states and 399084 transitions. [2022-11-25 18:17:53,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:17:53,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 518 [2022-11-25 18:17:53,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:17:53,582 INFO L225 Difference]: With dead ends: 353727 [2022-11-25 18:17:53,582 INFO L226 Difference]: Without dead ends: 195264 [2022-11-25 18:17:53,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:17:53,651 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 650 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:17:53,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1397 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 18:17:53,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195264 states. [2022-11-25 18:17:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195264 to 183999. [2022-11-25 18:17:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183999 states, 183998 states have (on average 1.1064902879379124) internal successors, (203592), 183998 states have internal predecessors, (203592), 0 states have call successors, (0), 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 18:17:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183999 states to 183999 states and 203592 transitions. [2022-11-25 18:17:56,737 INFO L78 Accepts]: Start accepts. Automaton has 183999 states and 203592 transitions. Word has length 518 [2022-11-25 18:17:56,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:17:56,738 INFO L495 AbstractCegarLoop]: Abstraction has 183999 states and 203592 transitions. [2022-11-25 18:17:56,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 18:17:56,738 INFO L276 IsEmpty]: Start isEmpty. Operand 183999 states and 203592 transitions. [2022-11-25 18:17:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2022-11-25 18:17:56,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:17:56,816 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:56,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 18:17:57,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5682b11-1b06-40d4-83f9-5a129792075c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:17:57,022 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:17:57,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:17:57,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1157473097, now seen corresponding path program 1 times [2022-11-25 18:17:57,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:17:57,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975764163] [2022-11-25 18:17:57,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:57,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:17:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 606 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-25 18:17:57,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:17:57,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975764163] [2022-11-25 18:17:57,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975764163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:17:57,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:17:57,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:17:57,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764858658] [2022-11-25 18:17:57,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:17:57,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:17:57,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:17:57,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:17:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:17:57,803 INFO L87 Difference]: Start difference. First operand 183999 states and 203592 transitions. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 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 18:18:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:18:04,055 INFO L93 Difference]: Finished difference Result 400289 states and 441188 transitions. [2022-11-25 18:18:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:18:04,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 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 728 [2022-11-25 18:18:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:18:04,313 INFO L225 Difference]: With dead ends: 400289 [2022-11-25 18:18:04,313 INFO L226 Difference]: Without dead ends: 217043 [2022-11-25 18:18:04,375 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 18:18:04,376 INFO L413 NwaCegarLoop]: 1241 mSDtfsCounter, 421 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:18:04,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1249 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-25 18:18:04,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217043 states. [2022-11-25 18:18:07,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217043 to 196015. [2022-11-25 18:18:07,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196015 states, 196014 states have (on average 1.0948860795657454) internal successors, (214613), 196014 states have internal predecessors, (214613), 0 states have call successors, (0), 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 18:18:07,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196015 states to 196015 states and 214613 transitions. [2022-11-25 18:18:07,649 INFO L78 Accepts]: Start accepts. Automaton has 196015 states and 214613 transitions. Word has length 728 [2022-11-25 18:18:07,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:18:07,650 INFO L495 AbstractCegarLoop]: Abstraction has 196015 states and 214613 transitions. [2022-11-25 18:18:07,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 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 18:18:07,650 INFO L276 IsEmpty]: Start isEmpty. Operand 196015 states and 214613 transitions. [2022-11-25 18:18:07,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2022-11-25 18:18:07,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:18:07,701 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:07,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:18:07,701 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:18:07,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:07,702 INFO L85 PathProgramCache]: Analyzing trace with hash -772426961, now seen corresponding path program 1 times [2022-11-25 18:18:07,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:18:07,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265075472] [2022-11-25 18:18:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:07,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:18:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 1110 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-11-25 18:18:11,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:18:11,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265075472] [2022-11-25 18:18:11,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265075472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:18:11,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:18:11,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:18:11,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095969847] [2022-11-25 18:18:11,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:18:11,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:18:11,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:18:11,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:18:11,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:18:11,166 INFO L87 Difference]: Start difference. First operand 196015 states and 214613 transitions. Second operand has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 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 18:18:16,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:18:16,939 INFO L93 Difference]: Finished difference Result 395223 states and 432474 transitions. [2022-11-25 18:18:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:18:16,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 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 728 [2022-11-25 18:18:16,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:18:17,562 INFO L225 Difference]: With dead ends: 395223 [2022-11-25 18:18:17,563 INFO L226 Difference]: Without dead ends: 194704 [2022-11-25 18:18:17,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:18:17,644 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 1522 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 2839 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 3939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 2839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:18:17,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1334 Invalid, 3939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 2839 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 18:18:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194704 states. [2022-11-25 18:18:20,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194704 to 166726. [2022-11-25 18:18:20,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166726 states, 166725 states have (on average 1.0833948118158645) internal successors, (180629), 166725 states have internal predecessors, (180629), 0 states have call successors, (0), 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 18:18:20,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166726 states to 166726 states and 180629 transitions. [2022-11-25 18:18:20,671 INFO L78 Accepts]: Start accepts. Automaton has 166726 states and 180629 transitions. Word has length 728 [2022-11-25 18:18:20,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:18:20,672 INFO L495 AbstractCegarLoop]: Abstraction has 166726 states and 180629 transitions. [2022-11-25 18:18:20,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 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 18:18:20,672 INFO L276 IsEmpty]: Start isEmpty. Operand 166726 states and 180629 transitions. [2022-11-25 18:18:20,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2022-11-25 18:18:20,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:18:20,710 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:20,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:18:20,711 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:18:20,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:20,712 INFO L85 PathProgramCache]: Analyzing trace with hash 752966117, now seen corresponding path program 1 times [2022-11-25 18:18:20,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:18:20,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359812625] [2022-11-25 18:18:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:20,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:18:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 1061 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2022-11-25 18:18:22,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:18:22,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359812625] [2022-11-25 18:18:22,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359812625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:18:22,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:18:22,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:18:22,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574976881] [2022-11-25 18:18:22,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:18:22,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:18:22,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:18:22,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:18:22,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:18:22,075 INFO L87 Difference]: Start difference. First operand 166726 states and 180629 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 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 18:18:28,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:18:28,291 INFO L93 Difference]: Finished difference Result 415309 states and 450133 transitions. [2022-11-25 18:18:28,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:18:28,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 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 736 [2022-11-25 18:18:28,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:18:28,581 INFO L225 Difference]: With dead ends: 415309 [2022-11-25 18:18:28,581 INFO L226 Difference]: Without dead ends: 249336 [2022-11-25 18:18:28,646 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 18:18:28,647 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:18:28,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 354 Invalid, 2888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-25 18:18:28,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249336 states.