./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label09.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_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/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_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/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_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/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 fb4961f065bc31a38b9b03268e48a86b12180156e24896eac19eb1c64de65ea9 --- 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 16:40:36,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:40:36,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:40:36,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:40:36,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:40:36,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:40:36,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:40:36,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:40:36,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:40:36,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:40:36,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:40:36,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:40:36,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:40:36,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:40:36,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:40:36,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:40:36,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:40:36,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:40:36,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:40:36,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:40:36,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:40:36,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:40:36,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:40:36,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:40:36,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:40:36,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:40:36,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:40:36,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:40:36,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:40:36,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:40:36,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:40:36,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:40:36,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:40:36,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:40:36,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:40:36,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:40:36,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:40:36,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:40:36,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:40:36,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:40:36,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:40:36,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 16:40:36,654 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:40:36,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:40:36,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:40:36,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:40:36,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:40:36,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:40:36,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:40:36,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:40:36,663 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:40:36,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:40:36,665 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:40:36,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:40:36,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:40:36,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:40:36,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:40:36,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:40:36,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:40:36,666 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:40:36,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:40:36,667 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:40:36,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:40:36,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:40:36,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:40:36,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:40:36,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:40:36,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:40:36,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:40:36,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:40:36,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:40:36,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:40:36,671 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:40:36,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:40:36,671 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:40:36,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:40:36,672 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_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb4961f065bc31a38b9b03268e48a86b12180156e24896eac19eb1c64de65ea9 [2022-11-25 16:40:37,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:40:37,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:40:37,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:40:37,146 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:40:37,147 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:40:37,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/eca-rers2012/Problem19_label09.c [2022-11-25 16:40:40,603 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:40:41,463 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:40:41,465 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/sv-benchmarks/c/eca-rers2012/Problem19_label09.c [2022-11-25 16:40:41,519 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/data/9cfcafe64/d37bd2d1dead491e97337020a034f305/FLAG240294fe7 [2022-11-25 16:40:41,541 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/data/9cfcafe64/d37bd2d1dead491e97337020a034f305 [2022-11-25 16:40:41,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:40:41,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:40:41,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:40:41,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:40:41,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:40:41,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:40:41" (1/1) ... [2022-11-25 16:40:41,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388f4b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:41, skipping insertion in model container [2022-11-25 16:40:41,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:40:41" (1/1) ... [2022-11-25 16:40:41,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:40:41,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:40:42,291 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_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/sv-benchmarks/c/eca-rers2012/Problem19_label09.c[6533,6546] [2022-11-25 16:40:44,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:40:44,389 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:40:44,438 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_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/sv-benchmarks/c/eca-rers2012/Problem19_label09.c[6533,6546] [2022-11-25 16:40:45,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:40:45,867 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:40:45,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:45 WrapperNode [2022-11-25 16:40:45,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:40:45,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:40:45,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:40:45,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:40:45,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:45" (1/1) ... [2022-11-25 16:40:46,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:45" (1/1) ... [2022-11-25 16:40:47,451 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-11-25 16:40:47,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:40:47,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:40:47,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:40:47,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:40:47,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:45" (1/1) ... [2022-11-25 16:40:47,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:45" (1/1) ... [2022-11-25 16:40:47,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:45" (1/1) ... [2022-11-25 16:40:47,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:45" (1/1) ... [2022-11-25 16:40:48,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:45" (1/1) ... [2022-11-25 16:40:48,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:45" (1/1) ... [2022-11-25 16:40:48,357 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:45" (1/1) ... [2022-11-25 16:40:48,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:45" (1/1) ... [2022-11-25 16:40:48,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:40:48,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:40:48,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:40:48,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:40:48,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:45" (1/1) ... [2022-11-25 16:40:48,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:40:48,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:40:48,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:40:48,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:40:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:40:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:40:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:40:48,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:40:48,728 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:40:48,730 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:41:01,236 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:41:01,271 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:41:01,271 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 16:41:01,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:41:01 BoogieIcfgContainer [2022-11-25 16:41:01,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:41:01,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:41:01,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:41:01,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:41:01,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:40:41" (1/3) ... [2022-11-25 16:41:01,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e22fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:41:01, skipping insertion in model container [2022-11-25 16:41:01,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:45" (2/3) ... [2022-11-25 16:41:01,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e22fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:41:01, skipping insertion in model container [2022-11-25 16:41:01,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:41:01" (3/3) ... [2022-11-25 16:41:01,292 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label09.c [2022-11-25 16:41:01,315 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:41:01,315 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 16:41:01,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:41:01,449 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;@163bb000, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:41:01,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 16:41:01,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 16:41:01,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 16:41:01,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:41:01,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:41:01,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:41:01,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:41:01,488 INFO L85 PathProgramCache]: Analyzing trace with hash 301649817, now seen corresponding path program 1 times [2022-11-25 16:41:01,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:41:01,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626846383] [2022-11-25 16:41:01,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:41:01,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:41:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:41:02,289 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 16:41:02,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:41:02,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626846383] [2022-11-25 16:41:02,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626846383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:41:02,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:41:02,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:41:02,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130337812] [2022-11-25 16:41:02,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:41:02,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:41:02,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:41:02,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:41:02,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:41:02,350 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 16:41:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:41:25,622 INFO L93 Difference]: Finished difference Result 6335 states and 12139 transitions. [2022-11-25 16:41:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:41:25,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-11-25 16:41:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:41:25,676 INFO L225 Difference]: With dead ends: 6335 [2022-11-25 16:41:25,676 INFO L226 Difference]: Without dead ends: 4520 [2022-11-25 16:41:25,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:41:25,688 INFO L413 NwaCegarLoop]: 1911 mSDtfsCounter, 4256 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 11295 mSolverCounterSat, 2249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4256 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 13544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2249 IncrementalHoareTripleChecker+Valid, 11295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2022-11-25 16:41:25,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4256 Valid, 2185 Invalid, 13544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2249 Valid, 11295 Invalid, 0 Unknown, 0 Unchecked, 22.6s Time] [2022-11-25 16:41:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2022-11-25 16:41:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4469. [2022-11-25 16:41:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4468 states have (on average 1.5980304386750224) internal successors, (7140), 4468 states have internal predecessors, (7140), 0 states have call successors, (0), 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 16:41:25,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7140 transitions. [2022-11-25 16:41:25,905 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7140 transitions. Word has length 49 [2022-11-25 16:41:25,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:41:25,906 INFO L495 AbstractCegarLoop]: Abstraction has 4469 states and 7140 transitions. [2022-11-25 16:41:25,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 16:41:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7140 transitions. [2022-11-25 16:41:25,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-11-25 16:41:25,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:41:25,915 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, 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] [2022-11-25 16:41:25,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:41:25,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:41:25,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:41:25,917 INFO L85 PathProgramCache]: Analyzing trace with hash -942356831, now seen corresponding path program 1 times [2022-11-25 16:41:25,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:41:25,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416434115] [2022-11-25 16:41:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:41:25,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:41:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:41:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:41:27,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:41:27,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416434115] [2022-11-25 16:41:27,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416434115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:41:27,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:41:27,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:41:27,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046903328] [2022-11-25 16:41:27,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:41:27,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:41:27,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:41:27,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:41:27,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:41:27,315 INFO L87 Difference]: Start difference. First operand 4469 states and 7140 transitions. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 16:41:39,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:41:39,660 INFO L93 Difference]: Finished difference Result 7602 states and 12932 transitions. [2022-11-25 16:41:39,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:41:39,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 284 [2022-11-25 16:41:39,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:41:39,681 INFO L225 Difference]: With dead ends: 7602 [2022-11-25 16:41:39,682 INFO L226 Difference]: Without dead ends: 4469 [2022-11-25 16:41:39,686 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 16:41:39,687 INFO L413 NwaCegarLoop]: 1771 mSDtfsCounter, 1138 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7327 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 7335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:41:39,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2113 Invalid, 7335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 7327 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-11-25 16:41:39,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2022-11-25 16:41:39,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 4469. [2022-11-25 16:41:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4468 states have (on average 1.596016114592659) internal successors, (7131), 4468 states have internal predecessors, (7131), 0 states have call successors, (0), 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 16:41:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7131 transitions. [2022-11-25 16:41:39,801 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7131 transitions. Word has length 284 [2022-11-25 16:41:39,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:41:39,803 INFO L495 AbstractCegarLoop]: Abstraction has 4469 states and 7131 transitions. [2022-11-25 16:41:39,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 16:41:39,803 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7131 transitions. [2022-11-25 16:41:39,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-11-25 16:41:39,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:41:39,817 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:39,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:41:39,818 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:41:39,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:41:39,819 INFO L85 PathProgramCache]: Analyzing trace with hash 275589064, now seen corresponding path program 1 times [2022-11-25 16:41:39,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:41:39,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359488167] [2022-11-25 16:41:39,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:41:39,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:41:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:41:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 16:41:41,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:41:41,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359488167] [2022-11-25 16:41:41,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359488167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:41:41,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446848182] [2022-11-25 16:41:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:41:41,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:41:41,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:41:41,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:41:41,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:41:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:41:41,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 16:41:41,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:41:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-25 16:41:43,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:41:43,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446848182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:41:43,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:41:43,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-25 16:41:43,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138289853] [2022-11-25 16:41:43,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:41:43,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:41:43,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:41:43,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:41:43,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:41:43,121 INFO L87 Difference]: Start difference. First operand 4469 states and 7131 transitions. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 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 16:41:53,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:41:53,204 INFO L93 Difference]: Finished difference Result 10339 states and 18164 transitions. [2022-11-25 16:41:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:41:53,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 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 536 [2022-11-25 16:41:53,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:41:53,237 INFO L225 Difference]: With dead ends: 10339 [2022-11-25 16:41:53,237 INFO L226 Difference]: Without dead ends: 7237 [2022-11-25 16:41:53,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:41:53,245 INFO L413 NwaCegarLoop]: 1209 mSDtfsCounter, 1058 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4577 mSolverCounterSat, 1050 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 5627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 4577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-25 16:41:53,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1387 Invalid, 5627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 4577 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-11-25 16:41:53,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7237 states. [2022-11-25 16:41:53,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7237 to 7236. [2022-11-25 16:41:53,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7235 states have (on average 1.520110573600553) internal successors, (10998), 7235 states have internal predecessors, (10998), 0 states have call successors, (0), 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 16:41:53,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 10998 transitions. [2022-11-25 16:41:53,426 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 10998 transitions. Word has length 536 [2022-11-25 16:41:53,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:41:53,428 INFO L495 AbstractCegarLoop]: Abstraction has 7236 states and 10998 transitions. [2022-11-25 16:41:53,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 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 16:41:53,429 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 10998 transitions. [2022-11-25 16:41:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2022-11-25 16:41:53,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:41:53,447 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:53,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 16:41:53,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:41:53,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:41:53,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:41:53,655 INFO L85 PathProgramCache]: Analyzing trace with hash 527277032, now seen corresponding path program 1 times [2022-11-25 16:41:53,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:41:53,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226154737] [2022-11-25 16:41:53,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:41:53,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:41:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:41:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-25 16:41:54,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:41:54,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226154737] [2022-11-25 16:41:54,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226154737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:41:54,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:41:54,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:41:54,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49580067] [2022-11-25 16:41:54,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:41:54,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:41:54,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:41:54,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:41:54,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:41:54,647 INFO L87 Difference]: Start difference. First operand 7236 states and 10998 transitions. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 2 states have internal predecessors, (529), 0 states have call successors, (0), 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 16:42:02,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:42:02,857 INFO L93 Difference]: Finished difference Result 15842 states and 24470 transitions. [2022-11-25 16:42:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:02,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 2 states have internal predecessors, (529), 0 states have call successors, (0), 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 601 [2022-11-25 16:42:02,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:42:02,890 INFO L225 Difference]: With dead ends: 15842 [2022-11-25 16:42:02,890 INFO L226 Difference]: Without dead ends: 9973 [2022-11-25 16:42:02,897 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 16:42:02,898 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1396 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 5598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:42:02,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 754 Invalid, 5598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1671 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-25 16:42:02,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2022-11-25 16:42:03,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9969. [2022-11-25 16:42:03,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 1.390048154093098) internal successors, (13856), 9968 states have internal predecessors, (13856), 0 states have call successors, (0), 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 16:42:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 13856 transitions. [2022-11-25 16:42:03,089 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 13856 transitions. Word has length 601 [2022-11-25 16:42:03,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:42:03,090 INFO L495 AbstractCegarLoop]: Abstraction has 9969 states and 13856 transitions. [2022-11-25 16:42:03,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 2 states have internal predecessors, (529), 0 states have call successors, (0), 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 16:42:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 13856 transitions. [2022-11-25 16:42:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-11-25 16:42:03,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:42:03,121 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:03,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:42:03,122 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:42:03,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:03,123 INFO L85 PathProgramCache]: Analyzing trace with hash -194840366, now seen corresponding path program 1 times [2022-11-25 16:42:03,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:03,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323705605] [2022-11-25 16:42:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:03,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-25 16:42:03,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:03,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323705605] [2022-11-25 16:42:03,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323705605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:03,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:03,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:42:03,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39422143] [2022-11-25 16:42:03,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:03,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:42:03,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:03,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:42:03,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:42:03,868 INFO L87 Difference]: Start difference. First operand 9969 states and 13856 transitions. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 2 states have internal predecessors, (529), 0 states have call successors, (0), 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 16:42:12,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:42:12,778 INFO L93 Difference]: Finished difference Result 26951 states and 38550 transitions. [2022-11-25 16:42:12,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:12,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 2 states have internal predecessors, (529), 0 states have call successors, (0), 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 625 [2022-11-25 16:42:12,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:42:12,832 INFO L225 Difference]: With dead ends: 26951 [2022-11-25 16:42:12,832 INFO L226 Difference]: Without dead ends: 18349 [2022-11-25 16:42:12,841 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 16:42:12,843 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 1361 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 4185 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 5615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-25 16:42:12,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 1600 Invalid, 5615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4185 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-25 16:42:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18349 states. [2022-11-25 16:42:13,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18349 to 18334. [2022-11-25 16:42:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18334 states, 18333 states have (on average 1.2809687448862705) internal successors, (23484), 18333 states have internal predecessors, (23484), 0 states have call successors, (0), 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 16:42:13,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18334 states to 18334 states and 23484 transitions. [2022-11-25 16:42:13,156 INFO L78 Accepts]: Start accepts. Automaton has 18334 states and 23484 transitions. Word has length 625 [2022-11-25 16:42:13,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:42:13,158 INFO L495 AbstractCegarLoop]: Abstraction has 18334 states and 23484 transitions. [2022-11-25 16:42:13,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 2 states have internal predecessors, (529), 0 states have call successors, (0), 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 16:42:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 18334 states and 23484 transitions. [2022-11-25 16:42:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2022-11-25 16:42:13,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:42:13,175 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:13,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:42:13,175 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:42:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:13,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1816927725, now seen corresponding path program 1 times [2022-11-25 16:42:13,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:13,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126108214] [2022-11-25 16:42:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:13,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:14,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:14,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126108214] [2022-11-25 16:42:14,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126108214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:14,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:14,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:42:14,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138247940] [2022-11-25 16:42:14,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:14,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:42:14,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:14,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:42:14,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:42:14,569 INFO L87 Difference]: Start difference. First operand 18334 states and 23484 transitions. Second operand has 5 states, 5 states have (on average 128.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 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 16:42:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:42:27,035 INFO L93 Difference]: Finished difference Result 42164 states and 53383 transitions. [2022-11-25 16:42:27,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:42:27,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 128.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 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 640 [2022-11-25 16:42:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:42:27,084 INFO L225 Difference]: With dead ends: 42164 [2022-11-25 16:42:27,084 INFO L226 Difference]: Without dead ends: 25171 [2022-11-25 16:42:27,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:42:27,100 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 2171 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 10274 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 10686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 10274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:42:27,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2171 Valid, 2024 Invalid, 10686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 10274 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-11-25 16:42:27,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25171 states. [2022-11-25 16:42:27,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25171 to 25166. [2022-11-25 16:42:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25166 states, 25165 states have (on average 1.2144247963441288) internal successors, (30561), 25165 states have internal predecessors, (30561), 0 states have call successors, (0), 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 16:42:27,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25166 states to 25166 states and 30561 transitions. [2022-11-25 16:42:27,572 INFO L78 Accepts]: Start accepts. Automaton has 25166 states and 30561 transitions. Word has length 640 [2022-11-25 16:42:27,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:42:27,573 INFO L495 AbstractCegarLoop]: Abstraction has 25166 states and 30561 transitions. [2022-11-25 16:42:27,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 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 16:42:27,574 INFO L276 IsEmpty]: Start isEmpty. Operand 25166 states and 30561 transitions. [2022-11-25 16:42:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2022-11-25 16:42:27,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:42:27,580 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:27,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:42:27,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:42:27,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:27,582 INFO L85 PathProgramCache]: Analyzing trace with hash 190089981, now seen corresponding path program 1 times [2022-11-25 16:42:27,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:27,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047226941] [2022-11-25 16:42:27,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:27,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 19 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:31,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:31,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047226941] [2022-11-25 16:42:31,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047226941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:42:31,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970939657] [2022-11-25 16:42:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:31,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:42:31,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:42:31,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:42:31,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:42:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:31,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 16:42:31,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:42:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-25 16:42:32,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:42:32,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970939657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:32,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:42:32,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2022-11-25 16:42:32,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790626159] [2022-11-25 16:42:32,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:32,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:42:32,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:32,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:42:32,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:42:32,271 INFO L87 Difference]: Start difference. First operand 25166 states and 30561 transitions. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 2 states have internal predecessors, (639), 0 states have call successors, (0), 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 16:42:40,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:42:40,651 INFO L93 Difference]: Finished difference Result 61387 states and 74782 transitions. [2022-11-25 16:42:40,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:40,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 2 states have internal predecessors, (639), 0 states have call successors, (0), 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 685 [2022-11-25 16:42:40,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:42:40,713 INFO L225 Difference]: With dead ends: 61387 [2022-11-25 16:42:40,713 INFO L226 Difference]: Without dead ends: 37588 [2022-11-25 16:42:40,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 685 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:42:40,739 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 1168 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4137 mSolverCounterSat, 1916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 6053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1916 IncrementalHoareTripleChecker+Valid, 4137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:42:40,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 1129 Invalid, 6053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1916 Valid, 4137 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-25 16:42:40,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37588 states. [2022-11-25 16:42:41,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37588 to 37489. [2022-11-25 16:42:41,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37489 states, 37488 states have (on average 1.158744131455399) internal successors, (43439), 37488 states have internal predecessors, (43439), 0 states have call successors, (0), 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 16:42:41,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37489 states to 37489 states and 43439 transitions. [2022-11-25 16:42:41,276 INFO L78 Accepts]: Start accepts. Automaton has 37489 states and 43439 transitions. Word has length 685 [2022-11-25 16:42:41,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:42:41,277 INFO L495 AbstractCegarLoop]: Abstraction has 37489 states and 43439 transitions. [2022-11-25 16:42:41,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 2 states have internal predecessors, (639), 0 states have call successors, (0), 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 16:42:41,277 INFO L276 IsEmpty]: Start isEmpty. Operand 37489 states and 43439 transitions. [2022-11-25 16:42:41,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2022-11-25 16:42:41,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:42:41,286 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:41,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 16:42:41,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:42:41,493 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:42:41,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:41,494 INFO L85 PathProgramCache]: Analyzing trace with hash 546581420, now seen corresponding path program 1 times [2022-11-25 16:42:41,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:41,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195621578] [2022-11-25 16:42:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:41,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 93 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:44,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:44,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195621578] [2022-11-25 16:42:44,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195621578] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:42:44,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113054745] [2022-11-25 16:42:44,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:44,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:42:44,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:42:44,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:42:44,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 16:42:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:44,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:42:44,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:42:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:46,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:42:46,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113054745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:46,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:42:46,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-25 16:42:46,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983865254] [2022-11-25 16:42:46,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:46,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:42:46,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:46,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:42:46,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-25 16:42:46,899 INFO L87 Difference]: Start difference. First operand 37489 states and 43439 transitions. Second operand has 4 states, 4 states have (on average 185.75) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 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 16:42:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:42:58,943 INFO L93 Difference]: Finished difference Result 72308 states and 84248 transitions. [2022-11-25 16:42:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:42:58,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 185.75) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 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 743 [2022-11-25 16:42:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:42:59,011 INFO L225 Difference]: With dead ends: 72308 [2022-11-25 16:42:59,011 INFO L226 Difference]: Without dead ends: 37551 [2022-11-25 16:42:59,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 741 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-25 16:42:59,032 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 2529 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 7486 mSolverCounterSat, 2075 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 9561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2075 IncrementalHoareTripleChecker+Valid, 7486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-25 16:42:59,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2529 Valid, 978 Invalid, 9561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2075 Valid, 7486 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2022-11-25 16:42:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37551 states. [2022-11-25 16:42:59,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37551 to 37494. [2022-11-25 16:42:59,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37494 states, 37493 states have (on average 1.1456005120955912) internal successors, (42952), 37493 states have internal predecessors, (42952), 0 states have call successors, (0), 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 16:42:59,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37494 states to 37494 states and 42952 transitions. [2022-11-25 16:42:59,559 INFO L78 Accepts]: Start accepts. Automaton has 37494 states and 42952 transitions. Word has length 743 [2022-11-25 16:42:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:42:59,564 INFO L495 AbstractCegarLoop]: Abstraction has 37494 states and 42952 transitions. [2022-11-25 16:42:59,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.75) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 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 16:42:59,565 INFO L276 IsEmpty]: Start isEmpty. Operand 37494 states and 42952 transitions. [2022-11-25 16:42:59,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2022-11-25 16:42:59,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:42:59,581 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:59,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 16:42:59,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:42:59,788 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:42:59,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1721889215, now seen corresponding path program 1 times [2022-11-25 16:42:59,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:59,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547149466] [2022-11-25 16:42:59,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:59,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:01,086 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-11-25 16:43:01,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:01,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547149466] [2022-11-25 16:43:01,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547149466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:01,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:01,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:43:01,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741626298] [2022-11-25 16:43:01,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:01,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:43:01,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:01,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:43:01,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:43:01,091 INFO L87 Difference]: Start difference. First operand 37494 states and 42952 transitions. Second operand has 4 states, 4 states have (on average 135.25) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 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 16:43:11,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:43:11,364 INFO L93 Difference]: Finished difference Result 72292 states and 83204 transitions. [2022-11-25 16:43:11,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:43:11,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 135.25) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 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 822 [2022-11-25 16:43:11,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:43:11,420 INFO L225 Difference]: With dead ends: 72292 [2022-11-25 16:43:11,420 INFO L226 Difference]: Without dead ends: 37499 [2022-11-25 16:43:11,442 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 16:43:11,443 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 915 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 7401 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 7468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 7401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-25 16:43:11,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 2013 Invalid, 7468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 7401 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-11-25 16:43:11,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37499 states. [2022-11-25 16:43:11,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37499 to 37494. [2022-11-25 16:43:11,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37494 states, 37493 states have (on average 1.1405328994745685) internal successors, (42762), 37493 states have internal predecessors, (42762), 0 states have call successors, (0), 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 16:43:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37494 states to 37494 states and 42762 transitions. [2022-11-25 16:43:11,928 INFO L78 Accepts]: Start accepts. Automaton has 37494 states and 42762 transitions. Word has length 822 [2022-11-25 16:43:11,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:43:11,929 INFO L495 AbstractCegarLoop]: Abstraction has 37494 states and 42762 transitions. [2022-11-25 16:43:11,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.25) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 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 16:43:11,929 INFO L276 IsEmpty]: Start isEmpty. Operand 37494 states and 42762 transitions. [2022-11-25 16:43:11,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2022-11-25 16:43:11,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:43:11,939 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:11,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 16:43:11,940 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:43:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:11,941 INFO L85 PathProgramCache]: Analyzing trace with hash 156682058, now seen corresponding path program 1 times [2022-11-25 16:43:11,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:11,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665485908] [2022-11-25 16:43:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:11,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-11-25 16:43:12,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:12,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665485908] [2022-11-25 16:43:12,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665485908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:12,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:12,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:43:12,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484844842] [2022-11-25 16:43:12,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:12,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:43:12,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:12,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:43:12,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:43:12,661 INFO L87 Difference]: Start difference. First operand 37494 states and 42762 transitions. Second operand has 4 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 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 16:43:28,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:43:28,450 INFO L93 Difference]: Finished difference Result 121540 states and 141608 transitions. [2022-11-25 16:43:28,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:43:28,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 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 833 [2022-11-25 16:43:28,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:43:28,554 INFO L225 Difference]: With dead ends: 121540 [2022-11-25 16:43:28,555 INFO L226 Difference]: Without dead ends: 85413 [2022-11-25 16:43:28,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:43:28,584 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 3336 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 8642 mSolverCounterSat, 2992 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3336 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 11634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2992 IncrementalHoareTripleChecker+Valid, 8642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:43:28,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3336 Valid, 1038 Invalid, 11634 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2992 Valid, 8642 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2022-11-25 16:43:28,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85413 states. [2022-11-25 16:43:29,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85413 to 83967. [2022-11-25 16:43:29,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83967 states, 83966 states have (on average 1.1283138413167235) internal successors, (94740), 83966 states have internal predecessors, (94740), 0 states have call successors, (0), 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 16:43:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83967 states to 83967 states and 94740 transitions. [2022-11-25 16:43:29,539 INFO L78 Accepts]: Start accepts. Automaton has 83967 states and 94740 transitions. Word has length 833 [2022-11-25 16:43:29,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:43:29,539 INFO L495 AbstractCegarLoop]: Abstraction has 83967 states and 94740 transitions. [2022-11-25 16:43:29,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 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 16:43:29,540 INFO L276 IsEmpty]: Start isEmpty. Operand 83967 states and 94740 transitions. [2022-11-25 16:43:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2022-11-25 16:43:29,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:43:29,555 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, 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, 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, 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, 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, 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, 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, 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, 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] [2022-11-25 16:43:29,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 16:43:29,556 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:43:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:29,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1047894856, now seen corresponding path program 1 times [2022-11-25 16:43:29,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:29,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262340537] [2022-11-25 16:43:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:29,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 94 proven. 422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:33,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:33,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262340537] [2022-11-25 16:43:33,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262340537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:43:33,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227779111] [2022-11-25 16:43:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:33,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:33,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:43:33,290 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:43:33,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 16:43:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:33,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 16:43:33,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:43:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 516 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:43,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:43:43,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227779111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:43,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:43:43,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-25 16:43:43,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879276258] [2022-11-25 16:43:43,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:43,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:43:43,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:43,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:43:43,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:43:43,514 INFO L87 Difference]: Start difference. First operand 83967 states and 94740 transitions. Second operand has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 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 16:43:48,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:43:51,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:43:53,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:43:56,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:43:59,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:44:12,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:44:13,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:44:20,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:44:51,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:44:52,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:44:55,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:44:59,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:45:30,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:45:40,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:45:45,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:45:54,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:46:02,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:46:24,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:46:31,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:46:33,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:46:48,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:46:56,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:46:58,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:47:05,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:47:09,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:47:12,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:47:15,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:47:23,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:47:26,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:47:30,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:47:31,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:47:38,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:47:43,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:47:46,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:47:51,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:47:56,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:48:18,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:48:19,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:48:22,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 16:48:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:26,230 INFO L93 Difference]: Finished difference Result 180262 states and 203132 transitions. [2022-11-25 16:48:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:48:26,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 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 960 [2022-11-25 16:48:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:26,368 INFO L225 Difference]: With dead ends: 180262 [2022-11-25 16:48:26,368 INFO L226 Difference]: Without dead ends: 99027 [2022-11-25 16:48:26,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 959 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:48:26,402 INFO L413 NwaCegarLoop]: 3123 mSDtfsCounter, 983 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 4110 mSolverCounterSat, 645 mSolverCounterUnsat, 312 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 280.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 5067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 4110 IncrementalHoareTripleChecker+Invalid, 312 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 281.8s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:26,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 3295 Invalid, 5067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 4110 Invalid, 312 Unknown, 0 Unchecked, 281.8s Time] [2022-11-25 16:48:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99027 states. [2022-11-25 16:48:27,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99027 to 98990. [2022-11-25 16:48:27,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98990 states, 98989 states have (on average 1.1168715715887625) internal successors, (110558), 98989 states have internal predecessors, (110558), 0 states have call successors, (0), 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 16:48:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98990 states to 98990 states and 110558 transitions. [2022-11-25 16:48:28,035 INFO L78 Accepts]: Start accepts. Automaton has 98990 states and 110558 transitions. Word has length 960 [2022-11-25 16:48:28,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:28,038 INFO L495 AbstractCegarLoop]: Abstraction has 98990 states and 110558 transitions. [2022-11-25 16:48:28,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 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 16:48:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 98990 states and 110558 transitions. [2022-11-25 16:48:28,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1343 [2022-11-25 16:48:28,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:28,058 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, 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, 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, 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, 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, 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, 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, 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, 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 16:48:28,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 16:48:28,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 16:48:28,259 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:48:28,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:28,260 INFO L85 PathProgramCache]: Analyzing trace with hash 225346570, now seen corresponding path program 1 times [2022-11-25 16:48:28,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:28,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541424905] [2022-11-25 16:48:28,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:28,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:32,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 273 proven. 1104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:32,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:32,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541424905] [2022-11-25 16:48:32,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541424905] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:48:32,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505948044] [2022-11-25 16:48:32,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:32,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:48:32,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:48:32,704 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:48:32,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 16:48:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:33,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 16:48:33,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:48:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2022-11-25 16:48:33,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:48:33,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505948044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:33,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:48:33,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-25 16:48:33,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754120281] [2022-11-25 16:48:33,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:33,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:48:33,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:33,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:48:33,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:48:33,389 INFO L87 Difference]: Start difference. First operand 98990 states and 110558 transitions. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 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 16:48:43,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:43,262 INFO L93 Difference]: Finished difference Result 208901 states and 237860 transitions. [2022-11-25 16:48:43,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:48:43,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 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 1342 [2022-11-25 16:48:43,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:43,407 INFO L225 Difference]: With dead ends: 208901 [2022-11-25 16:48:43,407 INFO L226 Difference]: Without dead ends: 129029 [2022-11-25 16:48:43,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1351 GetRequests, 1344 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:48:43,437 INFO L413 NwaCegarLoop]: 1048 mSDtfsCounter, 1615 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4878 mSolverCounterSat, 1011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 5889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1011 IncrementalHoareTripleChecker+Valid, 4878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:43,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 1124 Invalid, 5889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1011 Valid, 4878 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-25 16:48:43,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129029 states. [2022-11-25 16:48:45,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129029 to 126291. [2022-11-25 16:48:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126291 states, 126290 states have (on average 1.1293926676696493) internal successors, (142631), 126290 states have internal predecessors, (142631), 0 states have call successors, (0), 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 16:48:45,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126291 states to 126291 states and 142631 transitions. [2022-11-25 16:48:45,401 INFO L78 Accepts]: Start accepts. Automaton has 126291 states and 142631 transitions. Word has length 1342 [2022-11-25 16:48:45,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:45,402 INFO L495 AbstractCegarLoop]: Abstraction has 126291 states and 142631 transitions. [2022-11-25 16:48:45,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 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 16:48:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 126291 states and 142631 transitions. [2022-11-25 16:48:45,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1428 [2022-11-25 16:48:45,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:45,449 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 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, 5, 5, 5, 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, 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, 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, 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, 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, 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, 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 16:48:45,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 16:48:45,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 16:48:45,657 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:48:45,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:45,658 INFO L85 PathProgramCache]: Analyzing trace with hash -201493320, now seen corresponding path program 1 times [2022-11-25 16:48:45,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:45,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717500298] [2022-11-25 16:48:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:45,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:48,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 863 proven. 844 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-25 16:48:48,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:48,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717500298] [2022-11-25 16:48:48,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717500298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:48:48,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499312780] [2022-11-25 16:48:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:48,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:48:48,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:48:48,905 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:48:48,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 16:48:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:49,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 16:48:49,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:48:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 537 proven. 0 refuted. 0 times theorem prover too weak. 1217 trivial. 0 not checked. [2022-11-25 16:48:49,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:48:49,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499312780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:49,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:48:49,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-25 16:48:49,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249057410] [2022-11-25 16:48:49,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:49,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:48:49,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:49,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:48:49,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:48:49,698 INFO L87 Difference]: Start difference. First operand 126291 states and 142631 transitions. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 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 16:49:00,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:49:00,438 INFO L93 Difference]: Finished difference Result 308577 states and 349197 transitions. [2022-11-25 16:49:00,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:49:00,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 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 1427 [2022-11-25 16:49:00,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:49:00,640 INFO L225 Difference]: With dead ends: 308577 [2022-11-25 16:49:00,641 INFO L226 Difference]: Without dead ends: 185018 [2022-11-25 16:49:00,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1434 GetRequests, 1427 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:49:00,696 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 1420 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 4036 mSolverCounterSat, 1435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 5471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1435 IncrementalHoareTripleChecker+Valid, 4036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:49:00,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 1723 Invalid, 5471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1435 Valid, 4036 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-25 16:49:01,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185018 states. [2022-11-25 16:49:02,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185018 to 165864. [2022-11-25 16:49:03,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165864 states, 165863 states have (on average 1.1212928742395833) internal successors, (185981), 165863 states have internal predecessors, (185981), 0 states have call successors, (0), 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 16:49:03,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165864 states to 165864 states and 185981 transitions. [2022-11-25 16:49:03,661 INFO L78 Accepts]: Start accepts. Automaton has 165864 states and 185981 transitions. Word has length 1427 [2022-11-25 16:49:03,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:49:03,662 INFO L495 AbstractCegarLoop]: Abstraction has 165864 states and 185981 transitions. [2022-11-25 16:49:03,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 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 16:49:03,662 INFO L276 IsEmpty]: Start isEmpty. Operand 165864 states and 185981 transitions. [2022-11-25 16:49:03,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1452 [2022-11-25 16:49:03,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:49:03,682 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, 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, 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, 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, 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, 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, 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] [2022-11-25 16:49:03,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 16:49:03,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 16:49:03,883 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:49:03,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:03,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1382923524, now seen corresponding path program 1 times [2022-11-25 16:49:03,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:03,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78204996] [2022-11-25 16:49:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:03,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1464 backedges. 988 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2022-11-25 16:49:06,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:06,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78204996] [2022-11-25 16:49:06,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78204996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:06,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:49:06,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:49:06,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583091319] [2022-11-25 16:49:06,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:06,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:49:06,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:06,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:49:06,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:49:06,343 INFO L87 Difference]: Start difference. First operand 165864 states and 185981 transitions. Second operand has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 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 16:49:24,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:49:24,031 INFO L93 Difference]: Finished difference Result 442561 states and 495297 transitions. [2022-11-25 16:49:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:49:24,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 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 1451 [2022-11-25 16:49:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:49:24,426 INFO L225 Difference]: With dead ends: 442561 [2022-11-25 16:49:24,426 INFO L226 Difference]: Without dead ends: 278064 [2022-11-25 16:49:24,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:49:24,526 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 2790 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 9402 mSolverCounterSat, 1520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2790 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 10922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1520 IncrementalHoareTripleChecker+Valid, 9402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-11-25 16:49:24,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2790 Valid, 1829 Invalid, 10922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1520 Valid, 9402 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2022-11-25 16:49:24,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278064 states. [2022-11-25 16:49:27,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278064 to 205510. [2022-11-25 16:49:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205510 states, 205509 states have (on average 1.1303105946698198) internal successors, (232289), 205509 states have internal predecessors, (232289), 0 states have call successors, (0), 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 16:49:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205510 states to 205510 states and 232289 transitions. [2022-11-25 16:49:27,977 INFO L78 Accepts]: Start accepts. Automaton has 205510 states and 232289 transitions. Word has length 1451 [2022-11-25 16:49:27,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:49:27,978 INFO L495 AbstractCegarLoop]: Abstraction has 205510 states and 232289 transitions. [2022-11-25 16:49:27,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 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 16:49:27,978 INFO L276 IsEmpty]: Start isEmpty. Operand 205510 states and 232289 transitions. [2022-11-25 16:49:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1481 [2022-11-25 16:49:28,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:49:28,460 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 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, 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, 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, 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, 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, 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, 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 16:49:28,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 16:49:28,461 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:49:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:28,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2043258596, now seen corresponding path program 1 times [2022-11-25 16:49:28,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:28,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666362042] [2022-11-25 16:49:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:28,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1829 backedges. 694 proven. 0 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2022-11-25 16:49:30,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:30,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666362042] [2022-11-25 16:49:30,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666362042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:30,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:49:30,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:49:30,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513150136] [2022-11-25 16:49:30,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:30,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:49:30,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:30,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:49:30,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:49:30,047 INFO L87 Difference]: Start difference. First operand 205510 states and 232289 transitions. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 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 16:49:39,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:49:39,610 INFO L93 Difference]: Finished difference Result 408296 states and 461853 transitions. [2022-11-25 16:49:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:49:39,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 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 1480 [2022-11-25 16:49:39,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:49:39,889 INFO L225 Difference]: With dead ends: 408296 [2022-11-25 16:49:39,889 INFO L226 Difference]: Without dead ends: 205518 [2022-11-25 16:49:39,976 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 16:49:39,977 INFO L413 NwaCegarLoop]: 2856 mSDtfsCounter, 1370 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 4405 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 4804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 4405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-25 16:49:39,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 3051 Invalid, 4804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 4405 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-25 16:49:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205518 states. [2022-11-25 16:49:42,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205518 to 201414. [2022-11-25 16:49:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201414 states, 201413 states have (on average 1.1189744455422441) internal successors, (225376), 201413 states have internal predecessors, (225376), 0 states have call successors, (0), 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 16:49:43,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201414 states to 201414 states and 225376 transitions. [2022-11-25 16:49:43,084 INFO L78 Accepts]: Start accepts. Automaton has 201414 states and 225376 transitions. Word has length 1480 [2022-11-25 16:49:43,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:49:43,085 INFO L495 AbstractCegarLoop]: Abstraction has 201414 states and 225376 transitions. [2022-11-25 16:49:43,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 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 16:49:43,086 INFO L276 IsEmpty]: Start isEmpty. Operand 201414 states and 225376 transitions. [2022-11-25 16:49:43,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1498 [2022-11-25 16:49:43,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:49:43,126 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, 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, 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, 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, 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, 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, 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, 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, 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, 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] [2022-11-25 16:49:43,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 16:49:43,127 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:49:43,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:43,127 INFO L85 PathProgramCache]: Analyzing trace with hash -117282707, now seen corresponding path program 1 times [2022-11-25 16:49:43,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:43,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581366270] [2022-11-25 16:49:43,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:43,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2149 backedges. 1142 proven. 844 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-25 16:49:46,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:46,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581366270] [2022-11-25 16:49:46,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581366270] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:49:46,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409206063] [2022-11-25 16:49:46,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:46,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:49:46,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:49:46,524 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:49:46,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8686b9d2-f26e-41f4-a9a7-03c6f4ece39e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 16:49:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:47,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 16:49:47,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:49:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2149 backedges. 1452 proven. 0 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2022-11-25 16:49:48,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:49:48,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409206063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:48,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:49:48,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-25 16:49:48,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650851988] [2022-11-25 16:49:48,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:48,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:49:48,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:48,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:49:48,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:49:48,820 INFO L87 Difference]: Start difference. First operand 201414 states and 225376 transitions. Second operand has 3 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 0 states have call successors, (0), 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 16:50:00,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:00,298 INFO L93 Difference]: Finished difference Result 505184 states and 571841 transitions. [2022-11-25 16:50:00,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:50:00,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 0 states have call successors, (0), 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 1497 [2022-11-25 16:50:00,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:00,723 INFO L225 Difference]: With dead ends: 505184 [2022-11-25 16:50:00,724 INFO L226 Difference]: Without dead ends: 324253 [2022-11-25 16:50:00,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1504 GetRequests, 1497 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:50:00,831 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 2103 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4034 mSolverCounterSat, 1466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 5500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1466 IncrementalHoareTripleChecker+Valid, 4034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:00,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2103 Valid, 793 Invalid, 5500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1466 Valid, 4034 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-25 16:50:01,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324253 states.