./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 969ea7ac1a6cea553b276c54292ec8e81265daf8dd23428f445a60f39343440e --- 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-2329fc7 [2022-12-13 15:03:01,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:03:01,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:03:01,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:03:01,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:03:01,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:03:01,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:03:01,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:03:01,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:03:01,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:03:01,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:03:01,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:03:01,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:03:01,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:03:01,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:03:01,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:03:01,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:03:01,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:03:01,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:03:01,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:03:01,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:03:01,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:03:01,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:03:01,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:03:01,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:03:01,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:03:01,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:03:01,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:03:01,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:03:01,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:03:01,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:03:01,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:03:01,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:03:01,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:03:01,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:03:01,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:03:01,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:03:01,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:03:01,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:03:01,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:03:01,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:03:01,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:03:01,502 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:03:01,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:03:01,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:03:01,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:03:01,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:03:01,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:03:01,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:03:01,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:03:01,505 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:03:01,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:03:01,505 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:03:01,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:03:01,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:03:01,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:03:01,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:03:01,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:03:01,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:03:01,506 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:03:01,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:03:01,507 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:03:01,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:03:01,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:03:01,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:03:01,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:03:01,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:03:01,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:03:01,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:03:01,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:03:01,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:03:01,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:03:01,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:03:01,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:03:01,509 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:03:01,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:03:01,509 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:03:01,509 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 969ea7ac1a6cea553b276c54292ec8e81265daf8dd23428f445a60f39343440e [2022-12-13 15:03:01,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:03:01,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:03:01,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:03:01,692 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:03:01,692 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:03:01,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c [2022-12-13 15:03:04,304 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:03:04,467 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:03:04,468 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c [2022-12-13 15:03:04,472 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/data/1a2973859/17c268d81b194caa9d27b52d2b3b152b/FLAG526c8037f [2022-12-13 15:03:04,487 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/data/1a2973859/17c268d81b194caa9d27b52d2b3b152b [2022-12-13 15:03:04,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:03:04,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:03:04,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:03:04,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:03:04,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:03:04,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:03:04" (1/1) ... [2022-12-13 15:03:04,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@361dfa03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:04, skipping insertion in model container [2022-12-13 15:03:04,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:03:04" (1/1) ... [2022-12-13 15:03:04,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:03:04,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:03:04,666 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c[576,589] [2022-12-13 15:03:04,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:03:04,694 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:03:04,703 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c[576,589] [2022-12-13 15:03:04,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:03:04,718 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:03:04,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:04 WrapperNode [2022-12-13 15:03:04,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:03:04,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:03:04,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:03:04,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:03:04,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:04" (1/1) ... [2022-12-13 15:03:04,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:04" (1/1) ... [2022-12-13 15:03:04,743 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2022-12-13 15:03:04,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:03:04,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:03:04,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:03:04,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:03:04,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:04" (1/1) ... [2022-12-13 15:03:04,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:04" (1/1) ... [2022-12-13 15:03:04,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:04" (1/1) ... [2022-12-13 15:03:04,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:04" (1/1) ... [2022-12-13 15:03:04,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:04" (1/1) ... [2022-12-13 15:03:04,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:04" (1/1) ... [2022-12-13 15:03:04,758 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:04" (1/1) ... [2022-12-13 15:03:04,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:04" (1/1) ... [2022-12-13 15:03:04,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:03:04,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:03:04,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:03:04,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:03:04,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:04" (1/1) ... [2022-12-13 15:03:04,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:03:04,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:04,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:04,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:03:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:03:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:03:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:03:04,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:03:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 15:03:04,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 15:03:04,870 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:03:04,871 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:03:04,977 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:03:04,981 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:03:04,981 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 15:03:04,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:03:04 BoogieIcfgContainer [2022-12-13 15:03:04,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:03:04,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:03:04,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:03:04,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:03:04,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:03:04" (1/3) ... [2022-12-13 15:03:04,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127507ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:03:04, skipping insertion in model container [2022-12-13 15:03:04,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:04" (2/3) ... [2022-12-13 15:03:04,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127507ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:03:04, skipping insertion in model container [2022-12-13 15:03:04,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:03:04" (3/3) ... [2022-12-13 15:03:04,989 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound2.c [2022-12-13 15:03:05,004 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:03:05,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:03:05,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:03:05,049 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@61a2c71e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:03:05,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 15:03:05,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 15:03:05,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 15:03:05,059 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:03:05,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:03:05,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:03:05,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:05,064 INFO L85 PathProgramCache]: Analyzing trace with hash -555122024, now seen corresponding path program 1 times [2022-12-13 15:03:05,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:05,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543735232] [2022-12-13 15:03:05,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:05,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:05,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:03:05,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543735232] [2022-12-13 15:03:05,165 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:03:05,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715534075] [2022-12-13 15:03:05,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:05,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:05,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:05,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:03:05,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:03:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:05,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 15:03:05,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:03:05,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:03:05,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715534075] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:03:05,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:03:05,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:03:05,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148441312] [2022-12-13 15:03:05,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:03:05,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:03:05,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:03:05,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:03:05,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:03:05,264 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:05,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:03:05,288 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2022-12-13 15:03:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:03:05,290 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-13 15:03:05,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:03:05,297 INFO L225 Difference]: With dead ends: 55 [2022-12-13 15:03:05,298 INFO L226 Difference]: Without dead ends: 25 [2022-12-13 15:03:05,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:03:05,304 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:03:05,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:03:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-13 15:03:05,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-12-13 15:03:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 15:03:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-12-13 15:03:05,334 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2022-12-13 15:03:05,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:03:05,334 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-12-13 15:03:05,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:05,334 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-12-13 15:03:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 15:03:05,335 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:03:05,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:03:05,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:03:05,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:05,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:03:05,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:05,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1985514477, now seen corresponding path program 1 times [2022-12-13 15:03:05,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:05,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807565419] [2022-12-13 15:03:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:05,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:05,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:03:05,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807565419] [2022-12-13 15:03:05,582 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:03:05,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792807103] [2022-12-13 15:03:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:05,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:05,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:05,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:03:05,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:03:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:05,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:03:05,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:03:05,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:03:05,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792807103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:03:05,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:03:05,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:03:05,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191750020] [2022-12-13 15:03:05,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:03:05,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:03:05,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:03:05,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:03:05,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:03:05,668 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:05,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:03:05,688 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2022-12-13 15:03:05,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:03:05,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-13 15:03:05,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:03:05,689 INFO L225 Difference]: With dead ends: 34 [2022-12-13 15:03:05,689 INFO L226 Difference]: Without dead ends: 27 [2022-12-13 15:03:05,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:03:05,691 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:03:05,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:03:05,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-13 15:03:05,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-12-13 15:03:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 15:03:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-12-13 15:03:05,699 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2022-12-13 15:03:05,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:03:05,699 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-12-13 15:03:05,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:05,700 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-12-13 15:03:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 15:03:05,700 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:03:05,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:03:05,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:03:05,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:05,902 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:03:05,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:05,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1984024927, now seen corresponding path program 1 times [2022-12-13 15:03:05,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:05,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79273386] [2022-12-13 15:03:05,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:05,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:05,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:03:05,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37497509] [2022-12-13 15:03:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:05,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:05,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:05,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:03:05,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:03:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:05,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 15:03:05,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:03:06,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:03:06,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:03:06,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79273386] [2022-12-13 15:03:06,094 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:03:06,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37497509] [2022-12-13 15:03:06,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37497509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:03:06,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:03:06,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:03:06,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502034581] [2022-12-13 15:03:06,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:03:06,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:03:06,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:03:06,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:03:06,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:03:06,097 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:06,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:03:06,211 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2022-12-13 15:03:06,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:03:06,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-13 15:03:06,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:03:06,212 INFO L225 Difference]: With dead ends: 37 [2022-12-13 15:03:06,212 INFO L226 Difference]: Without dead ends: 35 [2022-12-13 15:03:06,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:03:06,213 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 38 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:03:06,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 93 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:03:06,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-13 15:03:06,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-12-13 15:03:06,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 15:03:06,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-12-13 15:03:06,219 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 10 [2022-12-13 15:03:06,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:03:06,219 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-12-13 15:03:06,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:06,220 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-12-13 15:03:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 15:03:06,220 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:03:06,220 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:03:06,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:03:06,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:06,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:03:06,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2084809189, now seen corresponding path program 1 times [2022-12-13 15:03:06,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:06,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561422169] [2022-12-13 15:03:06,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:06,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:06,457 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:03:06,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534001983] [2022-12-13 15:03:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:06,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:06,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:06,460 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:03:06,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:03:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:06,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 15:03:06,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:03:06,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:03:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:03:06,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:03:06,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561422169] [2022-12-13 15:03:06,669 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:03:06,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534001983] [2022-12-13 15:03:06,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534001983] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 15:03:06,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:03:06,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2022-12-13 15:03:06,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109716829] [2022-12-13 15:03:06,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:03:06,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:03:06,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:03:06,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:03:06,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:03:06,671 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:03:06,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:03:06,738 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2022-12-13 15:03:06,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:03:06,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-12-13 15:03:06,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:03:06,739 INFO L225 Difference]: With dead ends: 50 [2022-12-13 15:03:06,739 INFO L226 Difference]: Without dead ends: 47 [2022-12-13 15:03:06,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:03:06,741 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:03:06,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 127 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:03:06,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-13 15:03:06,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-12-13 15:03:06,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 15:03:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2022-12-13 15:03:06,752 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2022-12-13 15:03:06,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:03:06,753 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2022-12-13 15:03:06,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:03:06,753 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2022-12-13 15:03:06,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 15:03:06,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:03:06,754 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:03:06,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:03:06,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-13 15:03:06,955 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:03:06,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:06,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2002825724, now seen corresponding path program 1 times [2022-12-13 15:03:06,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:06,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239261026] [2022-12-13 15:03:06,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:06,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:06,985 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:03:06,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708633389] [2022-12-13 15:03:06,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:06,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:06,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:06,990 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:03:06,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:03:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:07,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 15:03:07,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:03:07,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:03:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:03:07,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:03:07,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239261026] [2022-12-13 15:03:07,215 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:03:07,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708633389] [2022-12-13 15:03:07,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708633389] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 15:03:07,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:03:07,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2022-12-13 15:03:07,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284180524] [2022-12-13 15:03:07,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:03:07,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:03:07,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:03:07,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:03:07,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:03:07,218 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:03:07,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:03:07,270 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2022-12-13 15:03:07,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:03:07,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-12-13 15:03:07,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:03:07,272 INFO L225 Difference]: With dead ends: 52 [2022-12-13 15:03:07,272 INFO L226 Difference]: Without dead ends: 50 [2022-12-13 15:03:07,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:03:07,274 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:03:07,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 64 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:03:07,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-13 15:03:07,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-12-13 15:03:07,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 15:03:07,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2022-12-13 15:03:07,284 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 23 [2022-12-13 15:03:07,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:03:07,284 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2022-12-13 15:03:07,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:03:07,284 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2022-12-13 15:03:07,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 15:03:07,285 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:03:07,285 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:03:07,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:03:07,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:07,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:03:07,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:07,486 INFO L85 PathProgramCache]: Analyzing trace with hash -840648207, now seen corresponding path program 1 times [2022-12-13 15:03:07,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:07,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724676987] [2022-12-13 15:03:07,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:07,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:07,495 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:03:07,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469774830] [2022-12-13 15:03:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:07,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:07,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:07,497 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:03:07,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:03:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:07,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:03:07,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:03:07,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:03:07,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:03:07,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724676987] [2022-12-13 15:03:07,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:03:07,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469774830] [2022-12-13 15:03:07,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469774830] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:03:07,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:03:07,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:03:07,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120493849] [2022-12-13 15:03:07,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:03:07,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:03:07,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:03:07,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:03:07,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:03:07,579 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:03:07,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:03:07,604 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2022-12-13 15:03:07,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:03:07,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-12-13 15:03:07,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:03:07,605 INFO L225 Difference]: With dead ends: 81 [2022-12-13 15:03:07,606 INFO L226 Difference]: Without dead ends: 56 [2022-12-13 15:03:07,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:03:07,606 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:03:07,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:03:07,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-13 15:03:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-12-13 15:03:07,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 15:03:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-12-13 15:03:07,616 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 26 [2022-12-13 15:03:07,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:03:07,617 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-12-13 15:03:07,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:03:07,617 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2022-12-13 15:03:07,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-13 15:03:07,618 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:03:07,618 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:03:07,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 15:03:07,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:07,819 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:03:07,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:07,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2012484164, now seen corresponding path program 1 times [2022-12-13 15:03:07,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:07,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357738061] [2022-12-13 15:03:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:07,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:07,842 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:03:07,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389150063] [2022-12-13 15:03:07,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:07,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:07,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:07,846 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:03:07,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:03:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:07,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 15:03:07,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 15:03:08,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:03:08,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:03:08,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357738061] [2022-12-13 15:03:08,013 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:03:08,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389150063] [2022-12-13 15:03:08,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389150063] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:03:08,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:03:08,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:03:08,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129612683] [2022-12-13 15:03:08,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:03:08,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:03:08,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:03:08,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:03:08,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:03:08,015 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 15:03:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:03:08,122 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2022-12-13 15:03:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:03:08,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-12-13 15:03:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:03:08,123 INFO L225 Difference]: With dead ends: 62 [2022-12-13 15:03:08,123 INFO L226 Difference]: Without dead ends: 60 [2022-12-13 15:03:08,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:03:08,124 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:03:08,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 90 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:03:08,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-13 15:03:08,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-12-13 15:03:08,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.175) internal successors, (47), 41 states have internal predecessors, (47), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 15:03:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2022-12-13 15:03:08,138 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 33 [2022-12-13 15:03:08,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:03:08,138 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2022-12-13 15:03:08,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 15:03:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2022-12-13 15:03:08,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-13 15:03:08,139 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:03:08,140 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:03:08,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 15:03:08,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:08,342 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:03:08,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:08,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2020901362, now seen corresponding path program 1 times [2022-12-13 15:03:08,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:08,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63863133] [2022-12-13 15:03:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:08,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:08,389 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:03:08,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235570073] [2022-12-13 15:03:08,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:08,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:08,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:08,394 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:03:08,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 15:03:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:08,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 15:03:08,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 15:03:08,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:03:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 15:03:08,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:03:08,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63863133] [2022-12-13 15:03:08,760 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:03:08,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235570073] [2022-12-13 15:03:08,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235570073] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:03:08,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:03:08,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-12-13 15:03:08,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669689631] [2022-12-13 15:03:08,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:03:08,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 15:03:08,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:03:08,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 15:03:08,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:03:08,762 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 15:03:09,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:03:09,111 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2022-12-13 15:03:09,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:03:09,111 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 39 [2022-12-13 15:03:09,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:03:09,113 INFO L225 Difference]: With dead ends: 79 [2022-12-13 15:03:09,113 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 15:03:09,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:03:09,113 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 43 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:03:09,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 139 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 15:03:09,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 15:03:09,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2022-12-13 15:03:09,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 15:03:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2022-12-13 15:03:09,124 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 39 [2022-12-13 15:03:09,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:03:09,125 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2022-12-13 15:03:09,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 15:03:09,125 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2022-12-13 15:03:09,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 15:03:09,126 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:03:09,126 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:03:09,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 15:03:09,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 15:03:09,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:03:09,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:09,327 INFO L85 PathProgramCache]: Analyzing trace with hash 803844641, now seen corresponding path program 1 times [2022-12-13 15:03:09,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:09,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918981346] [2022-12-13 15:03:09,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:09,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:09,336 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:03:09,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910044224] [2022-12-13 15:03:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:09,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:09,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:09,337 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:03:09,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 15:03:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:09,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 15:03:09,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 15:03:09,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:03:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 15:03:09,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:03:09,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918981346] [2022-12-13 15:03:09,716 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:03:09,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910044224] [2022-12-13 15:03:09,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910044224] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 15:03:09,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:03:09,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-12-13 15:03:09,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856110923] [2022-12-13 15:03:09,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:03:09,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:03:09,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:03:09,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:03:09,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:03:09,718 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:03:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:03:09,901 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2022-12-13 15:03:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:03:09,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-12-13 15:03:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:03:09,902 INFO L225 Difference]: With dead ends: 64 [2022-12-13 15:03:09,902 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 15:03:09,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-12-13 15:03:09,903 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:03:09,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 55 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 15:03:09,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 15:03:09,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 15:03:09,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 15:03:09,904 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2022-12-13 15:03:09,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:03:09,904 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 15:03:09,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 15:03:09,905 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 15:03:09,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 15:03:09,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 15:03:09,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 15:03:10,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 15:03:10,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 15:03:10,469 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-12-13 15:03:10,469 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-12-13 15:03:10,469 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 23 65) the Hoare annotation is: true [2022-12-13 15:03:10,469 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-13 15:03:10,469 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-13 15:03:10,469 INFO L899 garLoopResultBuilder]: For program point L49(lines 46 58) no Hoare annotation was computed. [2022-12-13 15:03:10,469 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-12-13 15:03:10,469 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2022-12-13 15:03:10,469 INFO L895 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-12-13 15:03:10,470 INFO L895 garLoopResultBuilder]: At program point L37-4(lines 37 61) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0)) (let ((.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and .cse0 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse2)) .cse1 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse2)))))) [2022-12-13 15:03:10,470 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-13 15:03:10,470 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (<= (* .cse1 2) |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ .cse1 |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-12-13 15:03:10,470 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2022-12-13 15:03:10,470 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2022-12-13 15:03:10,470 INFO L895 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-12-13 15:03:10,470 INFO L899 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2022-12-13 15:03:10,470 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-13 15:03:10,470 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-12-13 15:03:10,470 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-12-13 15:03:10,470 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2022-12-13 15:03:10,470 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-12-13 15:03:10,470 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-12-13 15:03:10,470 INFO L899 garLoopResultBuilder]: For program point L39(lines 37 61) no Hoare annotation was computed. [2022-12-13 15:03:10,470 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-12-13 15:03:10,470 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-12-13 15:03:10,470 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-12-13 15:03:10,471 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-12-13 15:03:10,471 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2022-12-13 15:03:10,471 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-12-13 15:03:10,473 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:03:10,474 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:03:10,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:03:10 BoogieIcfgContainer [2022-12-13 15:03:10,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:03:10,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:03:10,484 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:03:10,484 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:03:10,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:03:04" (3/4) ... [2022-12-13 15:03:10,486 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 15:03:10,491 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-13 15:03:10,494 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-12-13 15:03:10,494 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 15:03:10,494 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 15:03:10,494 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 15:03:10,516 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 15:03:10,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:03:10,517 INFO L158 Benchmark]: Toolchain (without parser) took 6026.46ms. Allocated memory was 203.4MB in the beginning and 245.4MB in the end (delta: 41.9MB). Free memory was 172.9MB in the beginning and 151.6MB in the end (delta: 21.2MB). Peak memory consumption was 64.8MB. Max. memory is 16.1GB. [2022-12-13 15:03:10,517 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 102.8MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:03:10,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.76ms. Allocated memory is still 203.4MB. Free memory was 172.4MB in the beginning and 162.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 15:03:10,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.68ms. Allocated memory is still 203.4MB. Free memory was 162.0MB in the beginning and 160.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:03:10,518 INFO L158 Benchmark]: Boogie Preprocessor took 15.62ms. Allocated memory is still 203.4MB. Free memory was 160.5MB in the beginning and 159.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:03:10,518 INFO L158 Benchmark]: RCFGBuilder took 222.29ms. Allocated memory is still 203.4MB. Free memory was 159.1MB in the beginning and 147.9MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 15:03:10,518 INFO L158 Benchmark]: TraceAbstraction took 5499.14ms. Allocated memory was 203.4MB in the beginning and 245.4MB in the end (delta: 41.9MB). Free memory was 147.3MB in the beginning and 154.8MB in the end (delta: -7.5MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2022-12-13 15:03:10,518 INFO L158 Benchmark]: Witness Printer took 32.82ms. Allocated memory is still 245.4MB. Free memory was 154.8MB in the beginning and 151.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:03:10,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 102.8MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.76ms. Allocated memory is still 203.4MB. Free memory was 172.4MB in the beginning and 162.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.68ms. Allocated memory is still 203.4MB. Free memory was 162.0MB in the beginning and 160.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.62ms. Allocated memory is still 203.4MB. Free memory was 160.5MB in the beginning and 159.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 222.29ms. Allocated memory is still 203.4MB. Free memory was 159.1MB in the beginning and 147.9MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5499.14ms. Allocated memory was 203.4MB in the beginning and 245.4MB in the end (delta: 41.9MB). Free memory was 147.3MB in the beginning and 154.8MB in the end (delta: -7.5MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. * Witness Printer took 32.82ms. Allocated memory is still 245.4MB. Free memory was 154.8MB in the beginning and 151.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 9, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 171 mSDsluCounter, 791 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 528 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 585 IncrementalHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 263 mSDtfsCounter, 585 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 326 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=8, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 17 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 39 PreInvPairs, 59 NumberOfFragments, 272 HoareAnnotationTreeSize, 39 FomulaSimplifications, 186 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 548 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 1152 SizeOfPredicates, 33 NumberOfNonLiveVariables, 759 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 252/266 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((cond == 1 && x == r + q * y) && 1 <= y) && 1 <= r) && b + x == a * y + r + q * y - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((cond == 1 && x == r + q * y) && 1 <= y) && b + x == a * y + r + q * y RESULT: Ultimate proved your program to be correct! [2022-12-13 15:03:10,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12228d9c-2ee4-4349-be74-a36f063db373/bin/uautomizer-uyxdKDjOR8/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 Result: TRUE