./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread/stack-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6 --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 --- 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-e04fb08 [2022-11-15 21:01:32,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-15 21:01:32,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-15 21:01:32,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-15 21:01:32,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-15 21:01:32,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-15 21:01:32,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-15 21:01:32,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-15 21:01:32,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-15 21:01:32,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-15 21:01:32,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-15 21:01:32,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-15 21:01:32,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-15 21:01:32,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-15 21:01:32,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-15 21:01:32,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-15 21:01:32,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-15 21:01:32,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-15 21:01:32,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-15 21:01:32,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-15 21:01:32,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-15 21:01:32,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-15 21:01:32,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-15 21:01:32,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-15 21:01:32,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-15 21:01:32,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-15 21:01:32,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-15 21:01:32,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-15 21:01:32,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-15 21:01:32,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-15 21:01:32,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-15 21:01:32,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-15 21:01:32,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-15 21:01:32,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-15 21:01:32,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-15 21:01:32,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-15 21:01:32,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-15 21:01:32,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-15 21:01:32,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-15 21:01:32,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-15 21:01:32,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-15 21:01:32,407 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/config/svcomp-Reach-32bit-GemCutter_Default.epf [2022-11-15 21:01:32,445 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-15 21:01:32,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-15 21:01:32,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-15 21:01:32,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-15 21:01:32,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-15 21:01:32,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-15 21:01:32,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-15 21:01:32,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-15 21:01:32,448 INFO L138 SettingsManager]: * Use SBE=true [2022-11-15 21:01:32,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-15 21:01:32,449 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-15 21:01:32,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-15 21:01:32,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-15 21:01:32,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-15 21:01:32,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-15 21:01:32,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-15 21:01:32,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-15 21:01:32,451 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-15 21:01:32,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-15 21:01:32,451 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-15 21:01:32,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-15 21:01:32,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-15 21:01:32,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-15 21:01:32,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-11-15 21:01:32,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-15 21:01:32,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-15 21:01:32,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-15 21:01:32,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-15 21:01:32,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-15 21:01:32,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-15 21:01:32,455 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2022-11-15 21:01:32,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-15 21:01:32,456 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-15 21:01:32,456 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-11-15 21:01:32,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-15 21:01:32,456 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-11-15 21:01:32,456 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-11-15 21:01:32,457 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 [2022-11-15 21:01:32,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-15 21:01:32,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-15 21:01:32,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-15 21:01:32,809 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-15 21:01:32,810 INFO L275 PluginConnector]: CDTParser initialized [2022-11-15 21:01:32,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/../../sv-benchmarks/c/pthread/stack-2.i [2022-11-15 21:01:32,873 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/data/32e0e7c4f/15f39d0a29374c64b1ad8c35eaa56ca1/FLAGece1957f9 [2022-11-15 21:01:33,481 INFO L306 CDTParser]: Found 1 translation units. [2022-11-15 21:01:33,482 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/sv-benchmarks/c/pthread/stack-2.i [2022-11-15 21:01:33,507 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/data/32e0e7c4f/15f39d0a29374c64b1ad8c35eaa56ca1/FLAGece1957f9 [2022-11-15 21:01:33,835 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/data/32e0e7c4f/15f39d0a29374c64b1ad8c35eaa56ca1 [2022-11-15 21:01:33,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-15 21:01:33,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-15 21:01:33,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-15 21:01:33,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-15 21:01:33,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-15 21:01:33,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:01:33" (1/1) ... [2022-11-15 21:01:33,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667fe6f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:01:33, skipping insertion in model container [2022-11-15 21:01:33,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:01:33" (1/1) ... [2022-11-15 21:01:33,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-15 21:01:33,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-15 21:01:34,394 WARN L229 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_ace0ff1b-bff8-44c1-9549-948a6a2947a9/sv-benchmarks/c/pthread/stack-2.i[41520,41533] [2022-11-15 21:01:34,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-15 21:01:34,429 INFO L203 MainTranslator]: Completed pre-run [2022-11-15 21:01:34,483 WARN L229 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_ace0ff1b-bff8-44c1-9549-948a6a2947a9/sv-benchmarks/c/pthread/stack-2.i[41520,41533] [2022-11-15 21:01:34,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-15 21:01:34,594 INFO L208 MainTranslator]: Completed translation [2022-11-15 21:01:34,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:01:34 WrapperNode [2022-11-15 21:01:34,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-15 21:01:34,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-15 21:01:34,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-15 21:01:34,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-15 21:01:34,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:01:34" (1/1) ... [2022-11-15 21:01:34,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:01:34" (1/1) ... [2022-11-15 21:01:34,683 INFO L138 Inliner]: procedures = 277, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 161 [2022-11-15 21:01:34,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-15 21:01:34,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-15 21:01:34,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-15 21:01:34,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-15 21:01:34,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:01:34" (1/1) ... [2022-11-15 21:01:34,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:01:34" (1/1) ... [2022-11-15 21:01:34,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:01:34" (1/1) ... [2022-11-15 21:01:34,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:01:34" (1/1) ... [2022-11-15 21:01:34,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:01:34" (1/1) ... [2022-11-15 21:01:34,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:01:34" (1/1) ... [2022-11-15 21:01:34,737 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:01:34" (1/1) ... [2022-11-15 21:01:34,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:01:34" (1/1) ... [2022-11-15 21:01:34,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-15 21:01:34,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-15 21:01:34,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-15 21:01:34,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-15 21:01:34,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:01:34" (1/1) ... [2022-11-15 21:01:34,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-15 21:01:34,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:01:34,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-15 21:01:34,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-15 21:01:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-15 21:01:34,828 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-15 21:01:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-15 21:01:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-15 21:01:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-15 21:01:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-15 21:01:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-15 21:01:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-15 21:01:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-15 21:01:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-15 21:01:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-15 21:01:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-15 21:01:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-15 21:01:34,832 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-15 21:01:35,041 INFO L235 CfgBuilder]: Building ICFG [2022-11-15 21:01:35,045 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-15 21:01:35,333 INFO L276 CfgBuilder]: Performing block encoding [2022-11-15 21:01:35,342 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-15 21:01:35,342 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-15 21:01:35,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:01:35 BoogieIcfgContainer [2022-11-15 21:01:35,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-15 21:01:35,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-15 21:01:35,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-15 21:01:35,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-15 21:01:35,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:01:33" (1/3) ... [2022-11-15 21:01:35,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6885a3a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:01:35, skipping insertion in model container [2022-11-15 21:01:35,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:01:34" (2/3) ... [2022-11-15 21:01:35,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6885a3a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:01:35, skipping insertion in model container [2022-11-15 21:01:35,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:01:35" (3/3) ... [2022-11-15 21:01:35,355 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2022-11-15 21:01:35,363 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-15 21:01:35,374 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-15 21:01:35,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-15 21:01:35,374 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-15 21:01:35,492 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-15 21:01:35,580 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-15 21:01:35,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-15 21:01:35,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:01:35,586 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-15 21:01:35,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-11-15 21:01:35,650 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-15 21:01:35,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Thread1of1ForFork0 ======== [2022-11-15 21:01:35,692 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=PARTIAL_ORDER_FA, 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;@35480fd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-15 21:01:35,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-15 21:01:36,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:36,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:36,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1625641514, now seen corresponding path program 1 times [2022-11-15 21:01:36,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:36,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105000616] [2022-11-15 21:01:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:36,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:01:36,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:36,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105000616] [2022-11-15 21:01:36,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105000616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:01:36,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-15 21:01:36,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-15 21:01:36,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278391662] [2022-11-15 21:01:36,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:01:36,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-15 21:01:36,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:01:36,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-15 21:01:36,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-15 21:01:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:36,509 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:01:36,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:01:36,514 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:36,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:36,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-15 21:01:36,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:36,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:36,541 INFO L85 PathProgramCache]: Analyzing trace with hash -384045749, now seen corresponding path program 1 times [2022-11-15 21:01:36,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:36,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914500256] [2022-11-15 21:01:36,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:36,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:01:36,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:36,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914500256] [2022-11-15 21:01:36,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914500256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:01:36,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-15 21:01:36,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-15 21:01:36,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868844085] [2022-11-15 21:01:36,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:01:36,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-15 21:01:36,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:01:36,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-15 21:01:36,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-15 21:01:36,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:36,754 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:01:36,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:01:36,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:36,756 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:36,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:36,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:36,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-15 21:01:36,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:36,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:36,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1539540379, now seen corresponding path program 1 times [2022-11-15 21:01:36,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:36,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410039041] [2022-11-15 21:01:36,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:36,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:01:37,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:37,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410039041] [2022-11-15 21:01:37,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410039041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:01:37,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-15 21:01:37,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-15 21:01:37,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784172867] [2022-11-15 21:01:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:01:37,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-15 21:01:37,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:01:37,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-15 21:01:37,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-15 21:01:37,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:37,187 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:01:37,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:01:37,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:37,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:37,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:37,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:37,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:37,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-15 21:01:37,330 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:37,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:37,331 INFO L85 PathProgramCache]: Analyzing trace with hash -681824779, now seen corresponding path program 1 times [2022-11-15 21:01:37,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:37,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639790033] [2022-11-15 21:01:37,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:37,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:01:37,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:37,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639790033] [2022-11-15 21:01:37,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639790033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:01:37,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-15 21:01:37,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-15 21:01:37,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86458133] [2022-11-15 21:01:37,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:01:37,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-15 21:01:37,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:01:37,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-15 21:01:37,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-15 21:01:37,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:37,563 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:01:37,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:01:37,563 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:37,563 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:37,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:37,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:37,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:37,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-15 21:01:37,677 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:37,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:37,678 INFO L85 PathProgramCache]: Analyzing trace with hash 493043883, now seen corresponding path program 1 times [2022-11-15 21:01:37,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:37,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370410157] [2022-11-15 21:01:37,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:37,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:01:37,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:37,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370410157] [2022-11-15 21:01:37,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370410157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:01:37,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-15 21:01:37,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-15 21:01:37,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215851421] [2022-11-15 21:01:37,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:01:37,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-15 21:01:37,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:01:37,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-15 21:01:37,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-15 21:01:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:37,997 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:01:37,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:01:37,997 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:37,997 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:37,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:37,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:37,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:38,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:38,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-15 21:01:38,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:38,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:38,060 INFO L85 PathProgramCache]: Analyzing trace with hash 45904425, now seen corresponding path program 1 times [2022-11-15 21:01:38,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:38,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227545904] [2022-11-15 21:01:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:38,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:01:38,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:38,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227545904] [2022-11-15 21:01:38,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227545904] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:01:38,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947380616] [2022-11-15 21:01:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:38,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:01:38,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:01:38,338 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:01:38,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-15 21:01:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:38,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-15 21:01:38,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:01:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:01:38,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-15 21:01:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:01:39,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947380616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-15 21:01:39,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-15 21:01:39,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-15 21:01:39,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817041122] [2022-11-15 21:01:39,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-15 21:01:39,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-15 21:01:39,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:01:39,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-15 21:01:39,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-15 21:01:39,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:39,023 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:01:39,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:01:39,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:39,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:39,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:39,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:39,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:39,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:39,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:39,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:39,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-15 21:01:39,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-15 21:01:39,344 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:39,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:39,345 INFO L85 PathProgramCache]: Analyzing trace with hash 105081945, now seen corresponding path program 1 times [2022-11-15 21:01:39,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:39,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464621509] [2022-11-15 21:01:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:39,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 130 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-15 21:01:39,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:39,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464621509] [2022-11-15 21:01:39,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464621509] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:01:39,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967683191] [2022-11-15 21:01:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:39,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:01:39,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:01:39,652 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:01:39,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-15 21:01:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:39,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-15 21:01:39,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:01:40,094 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-15 21:01:40,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-15 21:01:40,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967683191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:01:40,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-15 21:01:40,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2022-11-15 21:01:40,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354239149] [2022-11-15 21:01:40,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:01:40,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-15 21:01:40,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:01:40,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-15 21:01:40,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-15 21:01:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:40,098 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:01:40,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:01:40,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:40,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:40,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:40,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:40,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:40,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:40,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:40,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:40,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:40,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-15 21:01:40,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-15 21:01:40,469 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:40,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:40,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1679110197, now seen corresponding path program 1 times [2022-11-15 21:01:40,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:40,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94132016] [2022-11-15 21:01:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:40,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:01:40,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:40,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94132016] [2022-11-15 21:01:40,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94132016] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:01:40,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619676840] [2022-11-15 21:01:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:40,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:01:40,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:01:40,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:01:40,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-15 21:01:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:40,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-15 21:01:40,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:01:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-15 21:01:41,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-15 21:01:41,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619676840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:01:41,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-15 21:01:41,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 8 [2022-11-15 21:01:41,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115723074] [2022-11-15 21:01:41,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:01:41,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-15 21:01:41,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:01:41,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-15 21:01:41,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-15 21:01:41,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:41,121 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:01:41,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:01:41,121 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:41,121 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:41,121 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:41,121 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:41,121 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:41,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:41,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:41,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:41,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:01:41,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-15 21:01:41,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-15 21:01:41,443 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:41,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:41,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2044113869, now seen corresponding path program 1 times [2022-11-15 21:01:41,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:41,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734573863] [2022-11-15 21:01:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:41,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 130 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-15 21:01:41,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:41,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734573863] [2022-11-15 21:01:41,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734573863] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:01:41,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746554139] [2022-11-15 21:01:41,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:41,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:01:41,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:01:41,751 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:01:41,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-15 21:01:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:41,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-15 21:01:41,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:01:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 130 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-15 21:01:42,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-15 21:01:42,424 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 130 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-15 21:01:42,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746554139] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-15 21:01:42,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-15 21:01:42,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-15 21:01:42,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229304736] [2022-11-15 21:01:42,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-15 21:01:42,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-15 21:01:42,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:01:42,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-15 21:01:42,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-15 21:01:42,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:42,428 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:01:42,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 45.5) internal successors, (455), 10 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:01:42,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:42,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:42,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:42,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:42,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:42,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:42,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:42,430 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:01:42,430 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:42,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:42,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:42,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:01:42,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:42,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-15 21:01:42,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:01:42,779 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:42,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:42,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1135310603, now seen corresponding path program 1 times [2022-11-15 21:01:42,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:42,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213471162] [2022-11-15 21:01:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:42,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 180 proven. 34 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-15 21:01:43,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:43,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213471162] [2022-11-15 21:01:43,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213471162] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:01:43,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920388011] [2022-11-15 21:01:43,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:43,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:01:43,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:01:43,316 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:01:43,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-15 21:01:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:43,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-15 21:01:43,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:01:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-15 21:01:43,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-15 21:01:44,177 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-15 21:01:44,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920388011] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-15 21:01:44,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-15 21:01:44,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 10 [2022-11-15 21:01:44,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618557203] [2022-11-15 21:01:44,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-15 21:01:44,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-15 21:01:44,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:01:44,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-15 21:01:44,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-15 21:01:44,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:44,182 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:01:44,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.9) internal successors, (279), 10 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:01:44,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:44,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:44,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:44,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:44,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:44,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:44,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:44,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:01:44,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:44,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:01:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:01:44,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-15 21:01:44,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-15 21:01:44,612 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:44,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:44,612 INFO L85 PathProgramCache]: Analyzing trace with hash 194898445, now seen corresponding path program 2 times [2022-11-15 21:01:44,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:44,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078098653] [2022-11-15 21:01:44,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:44,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 260 proven. 387 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-15 21:01:45,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:45,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078098653] [2022-11-15 21:01:45,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078098653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:01:45,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532010450] [2022-11-15 21:01:45,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-15 21:01:45,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:01:45,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:01:45,250 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:01:45,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-15 21:01:45,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-15 21:01:45,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-15 21:01:45,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-15 21:01:45,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:01:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 260 proven. 387 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-15 21:01:45,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-15 21:01:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 260 proven. 387 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-15 21:01:46,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532010450] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-15 21:01:46,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-15 21:01:46,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-11-15 21:01:46,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178329935] [2022-11-15 21:01:46,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-15 21:01:46,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-15 21:01:46,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:01:46,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-15 21:01:46,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-15 21:01:46,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:46,443 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:01:46,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 44.76923076923077) internal successors, (582), 13 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:01:46,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:46,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:46,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:46,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:46,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:46,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:46,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:46,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:01:46,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:46,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:01:46,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:01:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:01:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:01:46,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-15 21:01:46,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-15 21:01:46,861 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:46,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:46,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1514581939, now seen corresponding path program 3 times [2022-11-15 21:01:46,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:46,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324746798] [2022-11-15 21:01:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:46,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 28 proven. 534 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2022-11-15 21:01:48,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:48,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324746798] [2022-11-15 21:01:48,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324746798] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:01:48,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611785466] [2022-11-15 21:01:48,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-15 21:01:48,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:01:48,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:01:48,674 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:01:48,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-15 21:01:49,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-15 21:01:49,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-15 21:01:49,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-15 21:01:49,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:01:50,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 1482 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:01:50,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-15 21:01:50,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611785466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:01:50,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-15 21:01:50,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [10] total 25 [2022-11-15 21:01:50,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004983532] [2022-11-15 21:01:50,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:01:50,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-15 21:01:50,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:01:50,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-15 21:01:50,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2022-11-15 21:01:50,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:50,440 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:01:50,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 34.94117647058823) internal successors, (594), 17 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:01:50,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:50,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:50,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:50,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:50,442 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:50,442 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:50,442 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:50,442 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:01:50,442 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:50,442 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:01:50,443 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:01:50,443 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:01:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:01:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:01:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-15 21:01:51,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-15 21:01:51,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-15 21:01:51,309 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:51,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:51,310 INFO L85 PathProgramCache]: Analyzing trace with hash 98029735, now seen corresponding path program 1 times [2022-11-15 21:01:51,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:51,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488480819] [2022-11-15 21:01:51,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:51,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 16 proven. 339 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-15 21:01:52,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:52,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488480819] [2022-11-15 21:01:52,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488480819] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:01:52,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41215131] [2022-11-15 21:01:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:52,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:01:52,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:01:52,033 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:01:52,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-15 21:01:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:52,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-15 21:01:52,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:01:52,835 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 16 proven. 279 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-11-15 21:01:52,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-15 21:01:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 16 proven. 279 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-11-15 21:01:53,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41215131] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-15 21:01:53,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-15 21:01:53,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 18 [2022-11-15 21:01:53,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785438012] [2022-11-15 21:01:53,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-15 21:01:53,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-15 21:01:53,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:01:53,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-15 21:01:53,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-15 21:01:53,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:53,539 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:01:53,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 27.333333333333332) internal successors, (492), 18 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:01:53,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:53,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:53,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:53,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:53,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:53,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:53,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:53,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:01:53,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:53,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:01:53,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:01:53,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-11-15 21:01:53,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:01:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:01:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:01:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-15 21:01:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-15 21:01:55,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-15 21:01:55,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-15 21:01:55,776 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:55,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1316110389, now seen corresponding path program 1 times [2022-11-15 21:01:55,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:55,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694920979] [2022-11-15 21:01:55,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:55,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 16 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:01:56,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:56,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694920979] [2022-11-15 21:01:56,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694920979] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:01:56,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002326460] [2022-11-15 21:01:56,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:56,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:01:56,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:01:56,264 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:01:56,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-15 21:01:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:56,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-15 21:01:56,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:01:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 16 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:01:56,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-15 21:01:57,248 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 16 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:01:57,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002326460] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-15 21:01:57,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-15 21:01:57,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2022-11-15 21:01:57,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417939376] [2022-11-15 21:01:57,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-15 21:01:57,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-15 21:01:57,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:01:57,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-15 21:01:57,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-15 21:01:57,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:57,252 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:01:57,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 26.307692307692307) internal successors, (342), 13 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:01:57,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:57,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:57,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:57,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:57,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:57,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:57,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:57,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:01:57,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:57,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:01:57,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:01:57,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-11-15 21:01:57,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2022-11-15 21:01:57,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:01:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:01:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:01:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:01:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:01:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:01:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:01:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-15 21:01:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-15 21:01:59,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:01:59,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-15 21:01:59,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-15 21:01:59,577 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:01:59,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:01:59,578 INFO L85 PathProgramCache]: Analyzing trace with hash -182677263, now seen corresponding path program 1 times [2022-11-15 21:01:59,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:01:59,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912352901] [2022-11-15 21:01:59,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:59,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:01:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:01:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 45 proven. 16 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2022-11-15 21:01:59,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:01:59,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912352901] [2022-11-15 21:01:59,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912352901] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:01:59,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639340970] [2022-11-15 21:01:59,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:01:59,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:01:59,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:01:59,958 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:01:59,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-15 21:02:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:00,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-15 21:02:00,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:02:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 40 proven. 334 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-15 21:02:00,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-15 21:02:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 40 proven. 334 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-15 21:02:01,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639340970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-15 21:02:01,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-15 21:02:01,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 12] total 18 [2022-11-15 21:02:01,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472705254] [2022-11-15 21:02:01,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-15 21:02:01,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-15 21:02:01,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:02:01,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-15 21:02:01,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-15 21:02:01,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:01,587 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:02:01,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 31.055555555555557) internal successors, (559), 18 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:02:01,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:01,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:01,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:02:01,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:01,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:01,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:01,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:01,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:02:01,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:01,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:02:01,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:02:01,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-11-15 21:02:01,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2022-11-15 21:02:01,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:02:01,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:15,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:15,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:15,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-15 21:02:15,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:15,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-15 21:02:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:02:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:02:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-15 21:02:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-15 21:02:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:02:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-15 21:02:15,371 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-15 21:02:15,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-15 21:02:15,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-15 21:02:15,583 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-15 21:02:15,586 INFO L307 ceAbstractionStarter]: Result for error location t1Thread1of1ForFork0 was SAFE (1/3) [2022-11-15 21:02:15,592 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-15 21:02:15,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-15 21:02:15,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:02:15,593 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-15 21:02:15,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Waiting until timeout for monitored process [2022-11-15 21:02:15,600 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-15 21:02:15,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-11-15 21:02:15,601 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=PARTIAL_ORDER_FA, 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;@35480fd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-15 21:02:15,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-15 21:02:15,734 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-11-15 21:02:15,735 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-11-15 21:02:15,736 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-11-15 21:02:15,737 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE (2/3) [2022-11-15 21:02:15,739 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-15 21:02:15,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-15 21:02:15,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:02:15,785 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-15 21:02:15,789 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-15 21:02:15,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2Thread1of1ForFork1 ======== [2022-11-15 21:02:15,790 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=PARTIAL_ORDER_FA, 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;@35480fd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-15 21:02:15,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-15 21:02:15,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (14)] Waiting until timeout for monitored process [2022-11-15 21:02:15,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:02:15,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:02:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1980271713, now seen corresponding path program 1 times [2022-11-15 21:02:15,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:02:15,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679022143] [2022-11-15 21:02:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:02:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:15,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:02:15,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679022143] [2022-11-15 21:02:15,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679022143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:02:15,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-15 21:02:15,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-15 21:02:15,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737412717] [2022-11-15 21:02:15,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:02:15,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-15 21:02:15,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:02:15,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-15 21:02:15,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-15 21:02:15,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:15,896 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:02:15,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:02:15,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:15,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:15,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-15 21:02:15,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:02:15,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:02:15,905 INFO L85 PathProgramCache]: Analyzing trace with hash -29832128, now seen corresponding path program 1 times [2022-11-15 21:02:15,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:02:15,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37986419] [2022-11-15 21:02:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:15,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:02:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:15,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:02:15,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37986419] [2022-11-15 21:02:15,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37986419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:02:15,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-15 21:02:15,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-15 21:02:15,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743507334] [2022-11-15 21:02:15,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:02:15,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-15 21:02:15,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:02:15,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-15 21:02:15,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-15 21:02:15,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:15,949 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:02:15,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:02:15,949 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:15,949 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:15,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:15,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-15 21:02:15,988 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:02:15,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:02:15,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1104138448, now seen corresponding path program 1 times [2022-11-15 21:02:15,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:02:15,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360329826] [2022-11-15 21:02:15,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:15,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:02:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:16,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:16,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:02:16,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360329826] [2022-11-15 21:02:16,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360329826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:02:16,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-15 21:02:16,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-15 21:02:16,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245770934] [2022-11-15 21:02:16,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:02:16,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-15 21:02:16,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:02:16,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-15 21:02:16,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-15 21:02:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:16,073 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:02:16,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:02:16,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:16,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:16,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:16,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:16,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:16,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-15 21:02:16,140 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:02:16,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:02:16,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2002638300, now seen corresponding path program 1 times [2022-11-15 21:02:16,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:02:16,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124580144] [2022-11-15 21:02:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:16,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:02:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:16,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:02:16,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124580144] [2022-11-15 21:02:16,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124580144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:02:16,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-15 21:02:16,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-15 21:02:16,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647775289] [2022-11-15 21:02:16,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:02:16,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-15 21:02:16,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:02:16,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-15 21:02:16,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-15 21:02:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:16,440 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:02:16,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:02:16,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:16,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:16,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:16,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:16,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:16,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:16,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:16,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-15 21:02:16,473 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:02:16,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:02:16,473 INFO L85 PathProgramCache]: Analyzing trace with hash 121058260, now seen corresponding path program 1 times [2022-11-15 21:02:16,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:02:16,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245944177] [2022-11-15 21:02:16,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:16,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:02:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:16,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:02:16,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245944177] [2022-11-15 21:02:16,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245944177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:02:16,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-15 21:02:16,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-15 21:02:16,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347768976] [2022-11-15 21:02:16,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:02:16,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-15 21:02:16,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:02:16,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-15 21:02:16,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-15 21:02:16,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:16,632 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:02:16,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:02:16,632 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:16,632 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:16,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:16,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:16,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:16,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-15 21:02:16,748 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:02:16,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:02:16,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2078672312, now seen corresponding path program 1 times [2022-11-15 21:02:16,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:02:16,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28584942] [2022-11-15 21:02:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:16,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:02:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:18,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:02:18,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28584942] [2022-11-15 21:02:18,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28584942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:02:18,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-15 21:02:18,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-15 21:02:18,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426553541] [2022-11-15 21:02:18,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:02:18,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-15 21:02:18,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:02:18,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-15 21:02:18,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-11-15 21:02:18,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:18,860 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:02:18,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:02:18,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:18,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:18,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:18,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:18,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:18,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:20,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-15 21:02:20,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-15 21:02:20,591 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:02:20,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:02:20,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1509504106, now seen corresponding path program 1 times [2022-11-15 21:02:20,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:02:20,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289571746] [2022-11-15 21:02:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:02:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:20,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:02:20,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289571746] [2022-11-15 21:02:20,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289571746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:02:20,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430143058] [2022-11-15 21:02:20,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:20,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:02:20,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:02:20,770 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:02:20,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-15 21:02:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:20,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-15 21:02:20,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:02:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:21,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-15 21:02:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:21,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430143058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-15 21:02:21,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-15 21:02:21,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-15 21:02:21,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144291958] [2022-11-15 21:02:21,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-15 21:02:21,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-15 21:02:21,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:02:21,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-15 21:02:21,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-15 21:02:21,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:21,337 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:02:21,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.4) internal successors, (324), 10 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:02:21,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:21,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:21,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:21,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:21,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:21,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2022-11-15 21:02:21,340 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:22,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-15 21:02:22,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:22,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-15 21:02:23,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:02:23,129 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:02:23,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:02:23,130 INFO L85 PathProgramCache]: Analyzing trace with hash 659370558, now seen corresponding path program 1 times [2022-11-15 21:02:23,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:02:23,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474676927] [2022-11-15 21:02:23,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:23,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:02:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-15 21:02:23,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:02:23,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474676927] [2022-11-15 21:02:23,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474676927] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:02:23,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317970564] [2022-11-15 21:02:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:23,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:02:23,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:02:23,444 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:02:23,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-15 21:02:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:23,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-15 21:02:23,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:02:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-15 21:02:23,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-15 21:02:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-15 21:02:24,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317970564] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-15 21:02:24,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-15 21:02:24,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 10 [2022-11-15 21:02:24,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325602855] [2022-11-15 21:02:24,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-15 21:02:24,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-15 21:02:24,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:02:24,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-15 21:02:24,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-15 21:02:24,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:24,301 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:02:24,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.1) internal successors, (211), 10 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:02:24,301 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:24,302 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:24,302 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:24,302 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:24,302 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:24,302 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2022-11-15 21:02:24,302 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:24,302 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-15 21:02:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:02:24,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-15 21:02:24,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-15 21:02:24,709 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:02:24,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:02:24,710 INFO L85 PathProgramCache]: Analyzing trace with hash 237609430, now seen corresponding path program 2 times [2022-11-15 21:02:24,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:02:24,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919997471] [2022-11-15 21:02:24,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:24,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:02:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 60 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:25,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:02:25,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919997471] [2022-11-15 21:02:25,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919997471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:02:25,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750329283] [2022-11-15 21:02:25,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-15 21:02:25,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:02:25,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:02:25,135 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:02:25,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-15 21:02:25,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-15 21:02:25,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-15 21:02:25,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-15 21:02:25,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:02:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 60 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:25,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-15 21:02:26,372 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 60 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:26,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750329283] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-15 21:02:26,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-15 21:02:26,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-11-15 21:02:26,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114084946] [2022-11-15 21:02:26,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-15 21:02:26,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-15 21:02:26,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:02:26,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-15 21:02:26,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-15 21:02:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:26,377 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:02:26,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.0) internal successors, (494), 13 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:02:26,378 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:26,378 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:26,378 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:26,378 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:26,378 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:26,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2022-11-15 21:02:26,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:26,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:02:26,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:26,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:26,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:26,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-15 21:02:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:02:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:02:26,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-15 21:02:26,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-15 21:02:26,748 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:02:26,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:02:26,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1746446358, now seen corresponding path program 3 times [2022-11-15 21:02:26,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:02:26,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792502463] [2022-11-15 21:02:26,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:26,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:02:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 617 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:27,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:02:27,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792502463] [2022-11-15 21:02:27,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792502463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:02:27,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059262104] [2022-11-15 21:02:27,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-15 21:02:27,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:02:27,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:02:27,595 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:02:27,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-15 21:02:28,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-15 21:02:28,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-15 21:02:28,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-15 21:02:28,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:02:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 955 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:29,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-15 21:02:29,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059262104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:02:29,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-15 21:02:29,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2022-11-15 21:02:29,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420502257] [2022-11-15 21:02:29,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:02:29,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-15 21:02:29,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:02:29,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-15 21:02:29,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-15 21:02:29,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:29,231 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:02:29,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 39.23076923076923) internal successors, (510), 13 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:02:29,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:29,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:29,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:29,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:29,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:29,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2022-11-15 21:02:29,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:29,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:02:29,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:02:29,234 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-15 21:02:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:02:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:02:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-15 21:02:29,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-15 21:02:29,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-15 21:02:29,815 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:02:29,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:02:29,815 INFO L85 PathProgramCache]: Analyzing trace with hash -706195424, now seen corresponding path program 1 times [2022-11-15 21:02:29,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:02:29,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787699254] [2022-11-15 21:02:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:29,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:02:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 861 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:30,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-15 21:02:30,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787699254] [2022-11-15 21:02:30,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787699254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-15 21:02:30,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947568766] [2022-11-15 21:02:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:30,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-15 21:02:30,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 [2022-11-15 21:02:30,622 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-15 21:02:30,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-15 21:02:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-15 21:02:30,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-15 21:02:30,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-15 21:02:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 1030 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-15 21:02:31,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-15 21:02:31,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947568766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-15 21:02:31,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-15 21:02:31,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2022-11-15 21:02:31,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156539959] [2022-11-15 21:02:31,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-15 21:02:31,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-15 21:02:31,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-15 21:02:31,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-15 21:02:31,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-15 21:02:31,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:31,751 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-15 21:02:31,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 39.69230769230769) internal successors, (516), 13 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-15 21:02:31,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:31,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:31,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:31,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:31,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:31,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2022-11-15 21:02:31,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:31,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:02:31,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:02:31,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-11-15 21:02:31,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:32,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-15 21:02:32,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:32,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-15 21:02:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-15 21:02:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-15 21:02:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-15 21:02:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-15 21:02:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-15 21:02:32,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-15 21:02:32,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-15 21:02:32,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-15 21:02:32,223 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-15 21:02:32,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-15 21:02:32,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1665047893, now seen corresponding path program 2 times [2022-11-15 21:02:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-15 21:02:32,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584215984] [2022-11-15 21:02:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-15 21:02:32,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-15 21:02:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-15 21:02:32,421 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-15 21:02:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-15 21:02:32,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-15 21:02:32,680 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-15 21:02:32,681 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-15 21:02:32,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-15 21:02:32,683 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-15 21:02:32,683 INFO L307 ceAbstractionStarter]: Result for error location t2Thread1of1ForFork1 was UNSAFE (3/3) [2022-11-15 21:02:32,686 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-15 21:02:32,686 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-15 21:02:32,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:02:32 BasicIcfg [2022-11-15 21:02:32,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-15 21:02:32,973 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-15 21:02:32,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-15 21:02:32,974 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-15 21:02:32,974 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:01:35" (3/4) ... [2022-11-15 21:02:32,976 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-15 21:02:33,419 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/witness.graphml [2022-11-15 21:02:33,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-15 21:02:33,421 INFO L158 Benchmark]: Toolchain (without parser) took 59582.50ms. Allocated memory was 81.8MB in the beginning and 8.4GB in the end (delta: 8.3GB). Free memory was 41.2MB in the beginning and 7.9GB in the end (delta: -7.9GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-15 21:02:33,422 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-15 21:02:33,422 INFO L158 Benchmark]: CACSL2BoogieTranslator took 754.38ms. Allocated memory was 81.8MB in the beginning and 111.1MB in the end (delta: 29.4MB). Free memory was 41.0MB in the beginning and 67.8MB in the end (delta: -26.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2022-11-15 21:02:33,423 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.69ms. Allocated memory is still 111.1MB. Free memory was 67.8MB in the beginning and 65.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-15 21:02:33,423 INFO L158 Benchmark]: Boogie Preprocessor took 67.64ms. Allocated memory is still 111.1MB. Free memory was 65.3MB in the beginning and 63.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-15 21:02:33,423 INFO L158 Benchmark]: RCFGBuilder took 592.04ms. Allocated memory is still 111.1MB. Free memory was 63.2MB in the beginning and 86.3MB in the end (delta: -23.1MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2022-11-15 21:02:33,424 INFO L158 Benchmark]: TraceAbstraction took 57625.63ms. Allocated memory was 111.1MB in the beginning and 8.4GB in the end (delta: 8.3GB). Free memory was 85.6MB in the beginning and 7.3GB in the end (delta: -7.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-15 21:02:33,424 INFO L158 Benchmark]: Witness Printer took 447.35ms. Allocated memory is still 8.4GB. Free memory was 7.3GB in the beginning and 7.9GB in the end (delta: -631.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-15 21:02:33,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 754.38ms. Allocated memory was 81.8MB in the beginning and 111.1MB in the end (delta: 29.4MB). Free memory was 41.0MB in the beginning and 67.8MB in the end (delta: -26.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.69ms. Allocated memory is still 111.1MB. Free memory was 67.8MB in the beginning and 65.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.64ms. Allocated memory is still 111.1MB. Free memory was 65.3MB in the beginning and 63.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 592.04ms. Allocated memory is still 111.1MB. Free memory was 63.2MB in the beginning and 86.3MB in the end (delta: -23.1MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * TraceAbstraction took 57625.63ms. Allocated memory was 111.1MB in the beginning and 8.4GB in the end (delta: 8.3GB). Free memory was 85.6MB in the beginning and 7.3GB in the end (delta: -7.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 447.35ms. Allocated memory is still 8.4GB. Free memory was 7.3GB in the beginning and 7.9GB in the end (delta: -631.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1048600, independent: 859818, independent conditional: 845125, independent unconditional: 14693, dependent: 188782, dependent conditional: 188759, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 861949, independent: 859818, independent conditional: 845125, independent unconditional: 14693, dependent: 2131, dependent conditional: 2108, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 861949, independent: 859818, independent conditional: 845125, independent unconditional: 14693, dependent: 2131, dependent conditional: 2108, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 885820, independent: 859818, independent conditional: 1208, independent unconditional: 858610, dependent: 26002, dependent conditional: 22663, dependent unconditional: 3339, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 885820, independent: 859818, independent conditional: 1208, independent unconditional: 858610, dependent: 26002, dependent conditional: 1072, dependent unconditional: 24930, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 885820, independent: 859818, independent conditional: 1208, independent unconditional: 858610, dependent: 26002, dependent conditional: 1072, dependent unconditional: 24930, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9076, independent: 9051, independent conditional: 2, independent unconditional: 9049, dependent: 25, dependent conditional: 2, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9076, independent: 9045, independent conditional: 0, independent unconditional: 9045, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 31, independent: 6, independent conditional: 2, independent unconditional: 4, dependent: 25, dependent conditional: 2, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 31, independent: 6, independent conditional: 2, independent unconditional: 4, dependent: 25, dependent conditional: 2, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 215, independent: 100, independent conditional: 8, independent unconditional: 92, dependent: 115, dependent conditional: 4, dependent unconditional: 111, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 885820, independent: 850767, independent conditional: 1206, independent unconditional: 849561, dependent: 25977, dependent conditional: 1070, dependent unconditional: 24907, unknown: 9076, unknown conditional: 4, unknown unconditional: 9072] , Statistics on independence cache: Total cache size (in pairs): 9076, Positive cache size: 9051, Positive conditional cache size: 2, Positive unconditional cache size: 9049, Negative cache size: 25, Negative conditional cache size: 2, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 21591, Maximal queried relation: 13, Independence queries for same thread: 186651 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.6s, Number of persistent set computation: 3809, Number of trivial persistent sets: 3484, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 14716, independent: 14693, independent conditional: 0, independent unconditional: 14693, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1048600, independent: 859818, independent conditional: 845125, independent unconditional: 14693, dependent: 188782, dependent conditional: 188759, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 861949, independent: 859818, independent conditional: 845125, independent unconditional: 14693, dependent: 2131, dependent conditional: 2108, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 861949, independent: 859818, independent conditional: 845125, independent unconditional: 14693, dependent: 2131, dependent conditional: 2108, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 885820, independent: 859818, independent conditional: 1208, independent unconditional: 858610, dependent: 26002, dependent conditional: 22663, dependent unconditional: 3339, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 885820, independent: 859818, independent conditional: 1208, independent unconditional: 858610, dependent: 26002, dependent conditional: 1072, dependent unconditional: 24930, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 885820, independent: 859818, independent conditional: 1208, independent unconditional: 858610, dependent: 26002, dependent conditional: 1072, dependent unconditional: 24930, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9076, independent: 9051, independent conditional: 2, independent unconditional: 9049, dependent: 25, dependent conditional: 2, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9076, independent: 9045, independent conditional: 0, independent unconditional: 9045, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 31, independent: 6, independent conditional: 2, independent unconditional: 4, dependent: 25, dependent conditional: 2, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 31, independent: 6, independent conditional: 2, independent unconditional: 4, dependent: 25, dependent conditional: 2, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 215, independent: 100, independent conditional: 8, independent unconditional: 92, dependent: 115, dependent conditional: 4, dependent unconditional: 111, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 885820, independent: 850767, independent conditional: 1206, independent unconditional: 849561, dependent: 25977, dependent conditional: 1070, dependent unconditional: 24907, unknown: 9076, unknown conditional: 4, unknown unconditional: 9072] , Statistics on independence cache: Total cache size (in pairs): 9076, Positive cache size: 9051, Positive conditional cache size: 2, Positive unconditional cache size: 9049, Negative cache size: 25, Negative conditional cache size: 2, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 21591, Maximal queried relation: 13, Independence queries for same thread: 186651 - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 5153, independent: 5115, independent conditional: 94, independent unconditional: 5021, dependent: 38, dependent conditional: 26, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5128, independent: 5115, independent conditional: 94, independent unconditional: 5021, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 5128, independent: 5115, independent conditional: 94, independent unconditional: 5021, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5128, independent: 5115, independent conditional: 0, independent unconditional: 5115, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 5128, independent: 5115, independent conditional: 0, independent unconditional: 5115, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 5128, independent: 5115, independent conditional: 0, independent unconditional: 5115, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4904, independent: 4892, independent conditional: 0, independent unconditional: 4892, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4904, independent: 4889, independent conditional: 0, independent unconditional: 4889, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 15, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 15, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 79, independent: 55, independent conditional: 0, independent unconditional: 55, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 5128, independent: 223, independent conditional: 0, independent unconditional: 223, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 4904, unknown conditional: 0, unknown unconditional: 4904] , Statistics on independence cache: Total cache size (in pairs): 4904, Positive cache size: 4892, Positive conditional cache size: 0, Positive unconditional cache size: 4892, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 25 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 120, Number of trivial persistent sets: 113, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5033, independent: 5021, independent conditional: 0, independent unconditional: 5021, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 5153, independent: 5115, independent conditional: 94, independent unconditional: 5021, dependent: 38, dependent conditional: 26, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5128, independent: 5115, independent conditional: 94, independent unconditional: 5021, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 5128, independent: 5115, independent conditional: 94, independent unconditional: 5021, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5128, independent: 5115, independent conditional: 0, independent unconditional: 5115, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 5128, independent: 5115, independent conditional: 0, independent unconditional: 5115, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 5128, independent: 5115, independent conditional: 0, independent unconditional: 5115, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4904, independent: 4892, independent conditional: 0, independent unconditional: 4892, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4904, independent: 4889, independent conditional: 0, independent unconditional: 4889, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 15, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 15, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 79, independent: 55, independent conditional: 0, independent unconditional: 55, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 5128, independent: 223, independent conditional: 0, independent unconditional: 223, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 4904, unknown conditional: 0, unknown unconditional: 4904] , Statistics on independence cache: Total cache size (in pairs): 4904, Positive cache size: 4892, Positive conditional cache size: 0, Positive unconditional cache size: 4892, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 25 - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 23434, independent: 19684, independent conditional: 5832, independent unconditional: 13852, dependent: 3750, dependent conditional: 3727, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19708, independent: 19684, independent conditional: 5832, independent unconditional: 13852, dependent: 24, dependent conditional: 1, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 19708, independent: 19684, independent conditional: 5832, independent unconditional: 13852, dependent: 24, dependent conditional: 1, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19733, independent: 19684, independent conditional: 3, independent unconditional: 19681, dependent: 49, dependent conditional: 22, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 19733, independent: 19684, independent conditional: 3, independent unconditional: 19681, dependent: 49, dependent conditional: 1, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 19733, independent: 19684, independent conditional: 3, independent unconditional: 19681, dependent: 49, dependent conditional: 1, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8448, independent: 8424, independent conditional: 2, independent unconditional: 8422, dependent: 24, dependent conditional: 1, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8448, independent: 8418, independent conditional: 0, independent unconditional: 8418, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 30, independent: 6, independent conditional: 2, independent unconditional: 4, dependent: 24, dependent conditional: 1, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 30, independent: 6, independent conditional: 2, independent unconditional: 4, dependent: 24, dependent conditional: 1, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 96, independent: 43, independent conditional: 4, independent unconditional: 39, dependent: 52, dependent conditional: 2, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 19733, independent: 11260, independent conditional: 1, independent unconditional: 11259, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 8448, unknown conditional: 3, unknown unconditional: 8445] , Statistics on independence cache: Total cache size (in pairs): 8448, Positive cache size: 8424, Positive conditional cache size: 2, Positive unconditional cache size: 8422, Negative cache size: 24, Negative conditional cache size: 1, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 21, Maximal queried relation: 7, Independence queries for same thread: 3726 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.2s, Number of persistent set computation: 495, Number of trivial persistent sets: 407, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 13875, independent: 13852, independent conditional: 0, independent unconditional: 13852, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 23434, independent: 19684, independent conditional: 5832, independent unconditional: 13852, dependent: 3750, dependent conditional: 3727, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19708, independent: 19684, independent conditional: 5832, independent unconditional: 13852, dependent: 24, dependent conditional: 1, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 19708, independent: 19684, independent conditional: 5832, independent unconditional: 13852, dependent: 24, dependent conditional: 1, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19733, independent: 19684, independent conditional: 3, independent unconditional: 19681, dependent: 49, dependent conditional: 22, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 19733, independent: 19684, independent conditional: 3, independent unconditional: 19681, dependent: 49, dependent conditional: 1, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 19733, independent: 19684, independent conditional: 3, independent unconditional: 19681, dependent: 49, dependent conditional: 1, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8448, independent: 8424, independent conditional: 2, independent unconditional: 8422, dependent: 24, dependent conditional: 1, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8448, independent: 8418, independent conditional: 0, independent unconditional: 8418, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 30, independent: 6, independent conditional: 2, independent unconditional: 4, dependent: 24, dependent conditional: 1, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 30, independent: 6, independent conditional: 2, independent unconditional: 4, dependent: 24, dependent conditional: 1, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 96, independent: 43, independent conditional: 4, independent unconditional: 39, dependent: 52, dependent conditional: 2, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 19733, independent: 11260, independent conditional: 1, independent unconditional: 11259, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 8448, unknown conditional: 3, unknown unconditional: 8445] , Statistics on independence cache: Total cache size (in pairs): 8448, Positive cache size: 8424, Positive conditional cache size: 2, Positive unconditional cache size: 8422, Negative cache size: 24, Negative conditional cache size: 1, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 21, Maximal queried relation: 7, Independence queries for same thread: 3726 - PositiveResult [Line: 941]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - CounterExampleResult [Line: 941]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L936] 0 static unsigned int arr[(5)]; VAL [arr={5:0}] [L938] 0 _Bool flag=(0); VAL [arr={5:0}, flag=0] [L937] 0 pthread_mutex_t m; VAL [arr={5:0}, flag=0, m={6:0}] [L935] 0 static int top=0; VAL [arr={5:0}, flag=0, m={6:0}, top=0] [L1021] 0 pthread_t id1, id2; VAL [arr={5:0}, flag=0, id1={9:0}, id2={7:0}, m={6:0}, top=0] [L1023] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={5:0}, flag=0, id1={9:0}, id2={7:0}, m={6:0}, pthread_create(&id1, ((void *)0), t1, ((void *)0))=13, top=0] [L990] 1 int i; VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, m={6:0}, top=0] [L991] 1 unsigned int tmp; VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, m={6:0}, top=0] [L992] 1 i=0 VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, top=0] [L1024] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={5:0}, flag=0, id1={9:0}, id2={7:0}, m={6:0}, pthread_create(&id2, ((void *)0), t2, ((void *)0))=14, top=0] [L1006] 2 int i; VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, m={6:0}, top=0] [L1007] 2 i=0 VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, top=0] [L1025] 0 \read(id1) VAL [\read(id1)=13, arr={5:0}, flag=0, id1={9:0}, id2={7:0}, m={6:0}, top=0] [L992] COND TRUE 1 i<(5) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, top=0] [L995] 1 tmp = __VERIFIER_nondet_uint() VAL [__VERIFIER_nondet_uint()=12884901889, arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, tmp=1, top=0] [L996] CALL 1 assume_abort_if_not(tmp < (5)) [L23] COND FALSE 1 !(!cond) VAL [\old(cond)=1, arr={5:0}, cond=1, flag=0, m={6:0}, top=0] [L996] RET 1 assume_abort_if_not(tmp < (5)) [L997] CALL, EXPR 1 push(arr,tmp) [L962] COND FALSE 1 !(top==(5)) VAL [\old(x)=1, arr={5:0}, flag=0, m={6:0}, stack={5:0}, stack={5:0}, top=0, x=1] [L969] CALL, EXPR 1 get_top() [L954] 1 return top; VAL [\result=0, arr={5:0}, flag=0, m={6:0}, top=0] [L969] RET, EXPR 1 get_top() [L969] 1 stack[get_top()] = x VAL [\old(x)=1, arr={5:0}, flag=0, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, top=0, x=1] [L970] CALL 1 inc_top() [L946] 1 top++ VAL [arr={5:0}, flag=0, m={6:0}, top=1] [L970] RET 1 inc_top() [L972] 1 return 0; VAL [\old(x)=1, \result=0, arr={5:0}, flag=0, m={6:0}, stack={5:0}, stack={5:0}, top=1, x=1] [L997] RET, EXPR 1 push(arr,tmp) [L997] COND FALSE 1 !(push(arr,tmp)==(-1)) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, push(arr,tmp)=0, tmp=1, top=1] [L999] 1 flag=(1) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=0, m={6:0}, tmp=1, top=1] [L992] 1 i++ VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, tmp=1, top=1] [L1007] COND TRUE 2 i<(5) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=0, m={6:0}, top=1] [L1010] COND TRUE 2 \read(flag) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=0, m={6:0}, top=1] [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; VAL [\result=0, \result=1, arr={5:0}, flag=1, m={6:0}, top=1] [L976] RET, EXPR 2 get_top() [L976] COND FALSE 2 !(get_top()==0) VAL [arr={5:0}, flag=1, get_top()=1, m={6:0}, stack={5:0}, stack={5:0}, top=1] [L983] CALL 2 dec_top() [L950] 2 top-- VAL [arr={5:0}, flag=1, m={6:0}, top=0] [L983] RET 2 dec_top() [L984] CALL, EXPR 2 get_top() [L954] 2 return top; VAL [\result=0, \result=0, arr={5:0}, flag=1, m={6:0}, top=0] [L984] RET, EXPR 2 get_top() [L984] EXPR 2 stack[get_top()] VAL [arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, stack[get_top()]=1, top=0] [L984] 2 return stack[get_top()]; VAL [\result=1, arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, stack[get_top()]=1, top=0] [L1012] RET, EXPR 2 pop(arr) [L1012] COND FALSE 2 !(!(pop(arr)!=(-2))) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=0, m={6:0}, pop(arr)=1, top=0] [L1007] 2 i++ VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, top=0] [L992] COND TRUE 1 i<(5) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, tmp=1, top=0] [L995] 1 tmp = __VERIFIER_nondet_uint() VAL [__VERIFIER_nondet_uint()=8589934593, arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, tmp=1, top=0] [L996] CALL 1 assume_abort_if_not(tmp < (5)) [L23] COND FALSE 1 !(!cond) VAL [\old(cond)=1, arr={5:0}, cond=1, flag=1, m={6:0}, top=0] [L996] RET 1 assume_abort_if_not(tmp < (5)) [L997] CALL, EXPR 1 push(arr,tmp) [L962] COND FALSE 1 !(top==(5)) VAL [\old(x)=1, arr={5:0}, flag=1, m={6:0}, stack={5:0}, stack={5:0}, top=0, x=1] [L969] CALL, EXPR 1 get_top() [L954] 1 return top; VAL [\result=0, \result=0, arr={5:0}, flag=1, m={6:0}, top=0] [L969] RET, EXPR 1 get_top() [L969] 1 stack[get_top()] = x VAL [\old(x)=1, arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, top=0, x=1] [L970] CALL 1 inc_top() [L946] 1 top++ VAL [arr={5:0}, flag=1, m={6:0}, top=1] [L970] RET 1 inc_top() [L972] 1 return 0; VAL [\old(x)=1, \result=0, arr={5:0}, flag=1, m={6:0}, stack={5:0}, stack={5:0}, top=1, x=1] [L997] RET, EXPR 1 push(arr,tmp) [L997] COND FALSE 1 !(push(arr,tmp)==(-1)) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, push(arr,tmp)=0, tmp=1, top=1] [L999] 1 flag=(1) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, tmp=1, top=1] [L992] 1 i++ VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=2, m={6:0}, tmp=1, top=1] [L1007] COND TRUE 2 i<(5) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, top=1] [L1010] COND TRUE 2 \read(flag) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, top=1] [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; VAL [\result=1, \result=0, arr={5:0}, flag=1, m={6:0}, top=1] [L976] RET, EXPR 2 get_top() [L976] COND FALSE 2 !(get_top()==0) VAL [arr={5:0}, flag=1, get_top()=1, m={6:0}, stack={5:0}, stack={5:0}, top=1] [L983] CALL 2 dec_top() [L950] 2 top-- VAL [arr={5:0}, flag=1, m={6:0}, top=0] [L983] RET 2 dec_top() [L984] CALL, EXPR 2 get_top() [L954] 2 return top; VAL [\result=0, \result=0, arr={5:0}, flag=1, m={6:0}, top=0] [L984] RET, EXPR 2 get_top() [L984] EXPR 2 stack[get_top()] VAL [arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, stack[get_top()]=1, top=0] [L984] 2 return stack[get_top()]; VAL [\result=1, arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, stack[get_top()]=1, top=0] [L1012] RET, EXPR 2 pop(arr) [L1012] COND FALSE 2 !(!(pop(arr)!=(-2))) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, pop(arr)=1, top=0] [L1007] 2 i++ VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=2, m={6:0}, top=0] [L992] COND TRUE 1 i<(5) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=2, m={6:0}, tmp=1, top=0] [L995] 1 tmp = __VERIFIER_nondet_uint() VAL [__VERIFIER_nondet_uint()=4294967298, arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=2, m={6:0}, tmp=2, top=0] [L996] CALL 1 assume_abort_if_not(tmp < (5)) [L23] COND FALSE 1 !(!cond) VAL [\old(cond)=1, arr={5:0}, cond=1, flag=1, m={6:0}, top=0] [L996] RET 1 assume_abort_if_not(tmp < (5)) [L997] CALL, EXPR 1 push(arr,tmp) [L962] COND FALSE 1 !(top==(5)) VAL [\old(x)=2, arr={5:0}, flag=1, m={6:0}, stack={5:0}, stack={5:0}, top=0, x=2] [L969] CALL, EXPR 1 get_top() [L954] 1 return top; VAL [\result=0, \result=0, arr={5:0}, flag=1, m={6:0}, top=0] [L969] RET, EXPR 1 get_top() [L969] 1 stack[get_top()] = x VAL [\old(x)=2, arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, top=0, x=2] [L970] CALL 1 inc_top() [L946] 1 top++ VAL [arr={5:0}, flag=1, m={6:0}, top=1] [L970] RET 1 inc_top() [L972] 1 return 0; VAL [\old(x)=2, \result=0, arr={5:0}, flag=1, m={6:0}, stack={5:0}, stack={5:0}, top=1, x=2] [L997] RET, EXPR 1 push(arr,tmp) [L997] COND FALSE 1 !(push(arr,tmp)==(-1)) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=2, m={6:0}, push(arr,tmp)=0, tmp=2, top=1] [L999] 1 flag=(1) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=2, m={6:0}, tmp=2, top=1] [L992] 1 i++ VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=3, m={6:0}, tmp=2, top=1] [L1007] COND TRUE 2 i<(5) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=2, m={6:0}, top=1] [L1010] COND TRUE 2 \read(flag) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=2, m={6:0}, top=1] [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; VAL [\result=1, \result=0, arr={5:0}, flag=1, m={6:0}, top=1] [L976] RET, EXPR 2 get_top() [L976] COND FALSE 2 !(get_top()==0) VAL [arr={5:0}, flag=1, get_top()=1, m={6:0}, stack={5:0}, stack={5:0}, top=1] [L983] CALL 2 dec_top() [L950] 2 top-- VAL [arr={5:0}, flag=1, m={6:0}, top=0] [L983] RET 2 dec_top() [L984] CALL, EXPR 2 get_top() [L954] 2 return top; VAL [\result=0, \result=0, arr={5:0}, flag=1, m={6:0}, top=0] [L984] RET, EXPR 2 get_top() [L984] EXPR 2 stack[get_top()] VAL [arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, stack[get_top()]=2, top=0] [L984] 2 return stack[get_top()]; VAL [\result=2, arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, stack[get_top()]=2, top=0] [L1012] RET, EXPR 2 pop(arr) [L1012] COND FALSE 2 !(!(pop(arr)!=(-2))) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=2, m={6:0}, pop(arr)=2, top=0] [L1007] 2 i++ VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=3, m={6:0}, top=0] [L992] COND TRUE 1 i<(5) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=3, m={6:0}, tmp=2, top=0] [L995] 1 tmp = __VERIFIER_nondet_uint() VAL [__VERIFIER_nondet_uint()=8589934594, arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=3, m={6:0}, tmp=2, top=0] [L996] CALL 1 assume_abort_if_not(tmp < (5)) [L23] COND FALSE 1 !(!cond) VAL [\old(cond)=1, arr={5:0}, cond=1, flag=1, m={6:0}, top=0] [L996] RET 1 assume_abort_if_not(tmp < (5)) [L997] CALL, EXPR 1 push(arr,tmp) [L962] COND FALSE 1 !(top==(5)) VAL [\old(x)=2, arr={5:0}, flag=1, m={6:0}, stack={5:0}, stack={5:0}, top=0, x=2] [L969] CALL, EXPR 1 get_top() [L954] 1 return top; VAL [\result=0, \result=0, arr={5:0}, flag=1, m={6:0}, top=0] [L969] RET, EXPR 1 get_top() [L969] 1 stack[get_top()] = x VAL [\old(x)=2, arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, top=0, x=2] [L970] CALL 1 inc_top() [L946] 1 top++ VAL [arr={5:0}, flag=1, m={6:0}, top=1] [L970] RET 1 inc_top() [L972] 1 return 0; VAL [\old(x)=2, \result=0, arr={5:0}, flag=1, m={6:0}, stack={5:0}, stack={5:0}, top=1, x=2] [L997] RET, EXPR 1 push(arr,tmp) [L997] COND FALSE 1 !(push(arr,tmp)==(-1)) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=3, m={6:0}, push(arr,tmp)=0, tmp=2, top=1] [L999] 1 flag=(1) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=3, m={6:0}, tmp=2, top=1] [L992] 1 i++ VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=4, m={6:0}, tmp=2, top=1] [L1007] COND TRUE 2 i<(5) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=3, m={6:0}, top=1] [L1010] COND TRUE 2 \read(flag) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=3, m={6:0}, top=1] [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; VAL [\result=0, \result=1, arr={5:0}, flag=1, m={6:0}, top=1] [L976] RET, EXPR 2 get_top() [L976] COND FALSE 2 !(get_top()==0) VAL [arr={5:0}, flag=1, get_top()=1, m={6:0}, stack={5:0}, stack={5:0}, top=1] [L983] CALL 2 dec_top() [L950] 2 top-- VAL [arr={5:0}, flag=1, m={6:0}, top=0] [L983] RET 2 dec_top() [L984] CALL, EXPR 2 get_top() [L954] 2 return top; VAL [\result=0, \result=0, arr={5:0}, flag=1, m={6:0}, top=0] [L984] RET, EXPR 2 get_top() [L984] EXPR 2 stack[get_top()] VAL [arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, stack[get_top()]=2, top=0] [L984] 2 return stack[get_top()]; VAL [\result=2, arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, stack[get_top()]=2, top=0] [L1012] RET, EXPR 2 pop(arr) [L1012] COND FALSE 2 !(!(pop(arr)!=(-2))) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=3, m={6:0}, pop(arr)=2, top=0] [L1007] 2 i++ VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=4, m={6:0}, top=0] [L992] COND TRUE 1 i<(5) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=4, m={6:0}, tmp=2, top=0] [L1007] COND TRUE 2 i<(5) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=4, m={6:0}, top=0] [L1010] COND TRUE 2 \read(flag) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=4, m={6:0}, top=0] [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; VAL [\result=0, \result=0, arr={5:0}, flag=1, m={6:0}, top=0] [L976] RET, EXPR 2 get_top() [L976] COND TRUE 2 get_top()==0 VAL [arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, top=0] [L979] 2 return (-2); VAL [\result=-2, arr={5:0}, flag=1, m={6:0}, stack={5:0}, stack={5:0}, top=0] [L1012] RET, EXPR 2 pop(arr) [L1012] COND TRUE 2 !(pop(arr)!=(-2)) VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=4, m={6:0}, pop(arr)=-2, top=0] [L1013] CALL 2 error() [L941] 2 reach_error() VAL [arr={5:0}, flag=1, m={6:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: t1Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 294 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 40.0s, OverallIterations: 15, TraceHistogramMax: 0, PathProgramHistogramMax: 3, EmptinessCheckTime: 20.3s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 187, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 6957 NumberOfCodeBlocks, 6957 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 9140 ConstructedInterpolants, 0 QuantifiedInterpolants, 22661 SizeOfPredicates, 72 NumberOfNonLiveVariables, 6484 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 32 InterpolantComputations, 8 PerfectInterpolantSequences, 6751/11451 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 294 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 0, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.1s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: t2Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 294 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 16.9s, OverallIterations: 12, TraceHistogramMax: 0, PathProgramHistogramMax: 3, EmptinessCheckTime: 4.7s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 138, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 4532 NumberOfCodeBlocks, 4532 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 4810 ConstructedInterpolants, 0 QuantifiedInterpolants, 13406 SizeOfPredicates, 36 NumberOfNonLiveVariables, 3424 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 3850/5176 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-15 21:02:33,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (14)] Ended with exit code 0 [2022-11-15 21:02:33,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Forceful destruction successful, exit code 0 [2022-11-15 21:02:33,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2022-11-15 21:02:34,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0ff1b-bff8-44c1-9549-948a6a2947a9/bin/ugemcutter-0EfhiD2kp6/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE